7 QUESTIONS PAY IS 100 WILL GIVE BRAINLEIST
A maintenance worker needs to wax a restaurant floor shaped like the image shown.

A six-sided figure. There is a horizontal base of 35 feet then another horizontal base below it of 20 feet. The longest side is to the right and is 40 feet. The top is 30 feet. There is a perpendicular from the vertex of the top to the first base of 35 that is labeled 15 feet.

If the wax cost $1.38 a square foot, how much will the wax cost to cover the floor?

$1,224.75
$1,569.75
$2,104.50
$2,449.50
Question 2(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

A quilter created the following shape to use in a block for a new quilt.

A six-sided figure with a large base of 13 inches. The side to the right of the base is 7 and one-half inches. The small side parallel to the base is 5.18 inches. There are two sides that form a point at a right angle. The smaller is 5 inches, and the larger is 6 inches.

What is the area of the shape for the quilt block?

sixty-three and three fourths in2
one hundred twelve and one half in2
one hundred twenty-seven and one half in2
225 in2
Question 3(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

An image of a parallelogram is shown.

A parallelogram with a base of 22 and one-half feet and a height of 19 and one-fourth feet.

What is the area of the parallelogram?

four hundred twenty-three and one-half ft2
four hundred twenty-seven and one-half ft2
four hundred thirty-three and one-eighth ft2
four hundred fifty-five and one-eighth ft2
Question 4(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

The image of a trapezoid is shown.

An isosceles trapezoid with a short base of 3 meters and a height of 6.2 meters. The portion of the large base from the left vertex to the perpendicular is 4 meters. The portion of the large base from the right vertex to the perpendicular is 7 meters.

What is the area of the trapezoid?

20.2 m2
43.4 m2
33.4 m2
86.8 m2
Question 5(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

An image of a rhombus is shown.

A rhombus with a base of 16 centimeters and a height of 15.5 centimeters.

What is the area of the rhombus?

15.75 cm2
31.5 cm2
124 cm2
248 cm2
Question 6(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

A composite figure is shown.

A five-sided figure with two parallel bases. The top one is 4 inches. The vertical height between these bases is 2.3 inches. That vertical height intersects the bottom base, leaving 2.5 inches between it and the vertex to the left. The side on the right is the longest at 5.2 inches. There is a horizontal line connecting the vertex of the bottom base to the 5.2-inch side and that line is 3 inches.

Which of the following represents the total area of the figure?

16.425 in2
20.775 in2
24.15 in2
28.5 in2
Question 7(Multiple Choice Worth 2 points)
(Area of Polygons and Composite Figures MC)

A composite figure is shown.

A five-sided figure with two parallel sides. The shorter one is 43 meters. The height of the figure is 34 meters. The portion from the vertex to the perpendicular height is 22 meters. The portion from a point to a vertical line created by two vertices is 18 meters.

Which of the following represents the total area of the figure?

306 m2
1,836 m2
2,142 m2
3,978 m2

Answers

Answer 1

Answer:

Step-by-step explanation:
I got you.

1.
The six-sided figure can be broken down into a rectangular prism with dimensions 35 x 20 x 30 and a right triangular pyramid with base 35 x 15 and height 30.

The rectangular prism has a total floor area of 35 x 20 = 700 square feet.

The right triangular pyramid has a base area of 0.5 x 35 x 15 = 262.5 square feet and a total floor area of 262.5 + 700 = 962.5 square feet.

So the total floor area of the six-sided figure is 962.5 square feet.

To find the cost to cover the floor with wax, we multiply the floor area by the cost per square foot:

962.5 * $1.38 = $1322.35

So the wax will cost $1322.35 to cover the floor.

2.
The shape for the quilt block can be divided into two right triangles and a rectangle. The rectangle has a length of 13 inches and a width of 5.18 inches, so its area is 13 * 5.18 = 67.34 square inches. The two right triangles each have a base of 5 inches and a height of 6 inches, so their area is 0.5 * 5 * 6 = 15 square inches each. The total area of the two right triangles is 15 * 2 = 30 square inches. The total area of the quilt block is 30 + 67.34 = 97.34 square inches.

So the area of the shape for the quilt block is 97.34 square inches.

3.
The area of a parallelogram is given by the formula: Area = base * height.

So the area of this parallelogram is:

22.5 feet * 19.25 feet = 432.0625 ft^2

So the area of the parallelogram is 432.0625 square feet or approximately 432 and 6/16 square feet.

4.
An isosceles trapezoid has two equal sides that are parallel to each other. In this case, the two equal sides are perpendicular to the height and are equal to 4 + 7 = 11 meters each. The average of the two parallel sides is the formula for the top base of a trapezoid, so the top base is (3 + 11)/2 = 7 meters.

The area of a trapezoid is given by the formula: Area = (bottom base + top base) * height / 2.

So the area of this trapezoid is:

(3 + 7) * 6.2 / 2 = 33.4 m^2

So the area of the trapezoid is 33.4 square meters.

5.
The area of a rhombus is given by the formula: Area = (diagonal 1 * diagonal 2) / 2.

In this case, the base of the rhombus is equal to one of its diagonals, and the height is equal to the other diagonal. So the area of this rhombus is:

(16 * 15.5) / 2 = 124 cm^2

So the area of the rhombus is 124 square centimeters.

6.
he total area of the figure can be found by dividing it into two parts: a parallelogram and a triangle.

The parallelogram can be found by using the formula for the area of a parallelogram: Area = base * height. In this case, the base is 4 inches and the height is 2.3 inches, so the area of the parallelogram is: 4 * 2.3 = 9.2 square inches.

The triangle can be found by using the formula for the area of a triangle: Area = (base * height) / 2. In this case, the base is 2.5 inches and the height is 3 inches, so the area of the triangle is: (2.5 * 3) / 2 = 3.75 square inches.

The total area of the figure is the sum of the areas of the parallelogram and triangle: 9.2 + 3.75 = 12.95 square inches.

So the total area of the figure is approximately 12.95 square inches.

7.
The figure can be broken down into two triangles and a rectangle. The area of one triangle is (1/2)bh = (1/2)(22)(34) = 308. To find the area of the other triangle, use the Pythagorean theorem to find the length of the remaining side. The two remaining sides are 43 and 18, and the hypotenuse is the side connecting the two vertices, so we have:

a^2 + b^2 = c^2

43^2 + 18^2 = c^2

1,849 + 324 = c^2

2,173 = c^2

c = 46.7

The area of this triangle is (1/2)bh = (1/2)(46.7)(34) = 786.2

The rectangle has a base of 43 and a height of 34, so its area is 43 * 34 = 1,462

The total area of the figure is 308 + 786.2 + 1,462 = 2,556.2 square meters.

So the answer is 2,556.2 m2.


Related Questions

Consider the quadratic function f(x) = x2 – 5x + 12. Which statements are true about the function and its graph? Select three options. The value of f(–10) = 82 The graph of the function is a parabola. The graph of the function opens down. The graph contains the point (20, –8). The graph contains the point (0, 0)

Answers

The statement that are true about the function and its graph is "The graph of the function is a parabola " , the correct option is (b) .

What is function?

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

here, we have,

In the question ,

it is given that ,

the quadratic function is f(x) = x² – 5x + 12 .

for x = -10 ,

f(-10) = (-10)² – 5(-10) + 12

= 100 + 50 + 12

= 162

option(a) is false .

the graph of the quadratic function is shown below .

form the graph we can see that the graph is a parabola ,

and the function opens upwards ,

the graph does not contain the points (20,-8) and (0,0)

Therefore , The statement that are true about the function and its graph is "The graph of the function is a parabola " , the correct option is (b) .

The given question is incomplete , the complete question is

Consider the quadratic function f(x) = x² – 5x + 12. Which statement is true about the function and its graph?

(a) The value of f(–10) = 82

(b) The graph of the function is a parabola.

(c) The graph of the function opens down.

(d) The graph contains the point (20, –8).

(e) The graph contains the point (0, 0).

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Is AABC a right triangle?
20
A
9
C
15

a. Yes
b. No

Answers

Answer:

No it's not!

Pythagorean theorem

15² + 9² = it's not 20

15² + 9² = 17 so

NO

8) The graph shows the total cost C of making x photocopies at a copy shop.
Making Photocopies
Total cost (dollars)
40
35
30
25
00
0
100 200 300 400 500
Number of copies
X
a) Does it cost more money to make 100 photocopies or
101 photocopies? Explain.
b) You have $40 to make photocopies. Can you buy more
than 500 photocopies? Explain.

Answers

a)  it costs more money to make 100 photocopies

b) you can buy more than 500 photocopies for $40

What are coordinates?

A pair of numbers that use the separations between the two reference axes to define the location of a point on a coordinate plane. usually represented by the x- and y-values, respectively, (x, y).

a) In the  graph , 100 photocopies cost $10,

For 101  photocopies, the point on the line comes below of 10 on y axis

So, it costs more money to make 100 photocopies

b)  graph arrow shows line moves on...

so, you can buy more than 500 photocopies for $40

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how many different rational numbers between $\dfrac{1}{1000}$ and $1000$ can be written either as a power of $2$ or as a power of $3$, where the exponent is a (possibly negative) integer?

Answers

The number of different rational numbers between [tex]$\dfrac{1}{1000}$[/tex] and 1000 that can be written either as a power of 2 or as a power of 3, where the exponent is a (possibly negative) integer, is 33.

To find all of the possible rational numbers, we need to find all the integer exponents for 2 and 3 that satisfy the conditions. [tex]2^0 = 1, 2^{-3} = 1/8, 2^{-2} = 1/4, 2^{-1} = 1/2, 2^1 = 2, 2^2 = 4, 2^3 = 8[/tex], and so on.

Similarly, for 3, we have [tex]3^0 = 1, 3^{-3} = 1/27, 3^{-2} = 1/9, 3^{-1} = 1/3, 3^1 = 3, 3^2 = 9, 3^3 = 27[/tex], and so on.

By combining the positive and negative exponents of 2 and 3, we get 33 different rational numbers that satisfy the conditions.

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Question in picture.

Answers

Answer:

              Since you are looking for an equation to represent the pattern, the correct equation in y = mx + b form would be y = 4x - 3.

Step-by-step explanation:

              It's important to look for two things in order to write a slope-intercept form equation: the rate of change, and the beginning value.

              First thing we can start with is the rate of change, which can be found by simply selecting any two points - or in this case terms - and find the difference between term values and term number, and then divide them by each other to find the rate of change. To make things easy, we can just use terms 1 and 2. Term 1 has a term 1 value of 1 block, while term 2 has a value of 5 blocks. In order to find the rate of change, we first find the difference in term value (5 - 1 = 4 blocks), then find the difference in term numbers (2 - 1 = 1 term), and lastly divide the difference in term value by the difference in term number (4 ÷ 1 = 4 blocks per term), which is your rate of change. Note that 4 is the number of blocks each term increases by when the term number increases by 1, and not the total number of blocks in each term.

           Now that we know the rate of change, we can input it into the base equation, which will become y = 4x + b. Now we only need to find b. The simple way to solve for b would be to use a single term as reference, and plug in its term number and value into the equation and calculate b. Once again, it's easier to just use the lowest one, which would be term 1, with a term number of 1, and a term value of 1. By inserting these values, we'll get an algebraic equation to solve for b, which is 1 = 4(1) + b or 1 = 4 + b. Now, we just need a value for b that would make 4 + b equal to 1, which would be b = 1 - 4 = -3, so b would equal -3. Which means the final equation to represent this situation would be y = 4x - 3.

Have a great day! Feel free to let me know if you have any more questions :)

Use substitution to determine whether the given value of the variable is a solution of the equation 4n+4=14; n=2.5

Answers

Answer: To determine whether 2.5 is a solution to the equation 4n + 4 = 14, we can substitute 2.5 for n in the equation and see if it makes the equation true.

So, if we substitute 2.5 for n in the equation:

4(2.5) + 4 = 14

Expanding the left-side expression:

10 + 4 = 14

Simplifying further:

14 = 14

Since the equation is true, we can conclude that 2.5 is a solution to the equation 4n + 4 = 14.

Step-by-step explanation:

you created a scatterplot of miles per gallon against weight; check to make sure it was included in your attachment. does the graph show any trend? if

Answers

A scatterplot of miles per gallon (MPG) against weight can reveal the relationship between the two variables. If there is a trend in the graph, it can help us understand the relationship between the two variables.

For example, if the graph shows a negative correlation, meaning that as the weight of the vehicle increases, the MPG decreases, this trend may be what is expected, as heavier vehicles typically have lower fuel efficiency. On the other hand, if the graph shows no trend or a positive trend, it would indicate that weight and MPG are not significantly related, which might not be what was expected.

It is important to keep in mind that a scatterplot can only show the relationship between two variables and cannot provide a definitive explanation of the cause-and-effect relationship between them

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Complete Question: you created a scatterplot of miles per gallon against weight; check to make sure it was included in your attachment. does the graph show any trend? if yes, is the trend what you expected? why or why not?

your friend shows u a coin collection. In it, 45/50 of the coins are quarters. what percent of the coins are quarters?

Answers

Answer:

90.00%

Step-by-step explanation:

Answer:

90% is quarters

Define units for the time that Marshall has the beans and the amount of coffee beans that Marshall has left.

Answers

After 4 weeks the amount of coffee that Marshall will have left would be = 20 ounces.

How to calculate the amount of coffee left?

The amount of ground coffee that Marshall bought for his office machine = 40 ounces

The quantity of coffee he uses per week in his office = 5 ounces.

Therefore for 4 weeks would be= ?

But, 1 week = 5 ounces

4 weeks = X

make X the subject of formula;

X = 5×4 = 20 ounces

The amount of ground coffee that will remain = 40-20 = 20 ounces.

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consider a linear system with the same number of equations as variables. when does this system have a unique solution?

Answers

The two system of linear equation with two variables has unique solution if and only if ( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ ).

Let us consider two linear equation with two variables 'x' and 'y'.

Number of equations are same as number of variables

⇒We have two system of linear equation that is :

a₁x + b₁y + c₁ = 0

a₂x + b₂y + c₂ = 0

Condition for system of linear equation has unique solution is:

( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ )

⇒ lines intersect at one point gives unique solution.

Therefore, the linear system of equation with two variables representing it has unique solution by ( a₁ / a₂ ) ≠  ( b₁ / b₂ )  ≠  ( c₁ / c₂ ).

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One way to establish validity of a questionnaire is by measuring:
A) the correlation between the score on the questionnaire and another measure of the same concept
B) The alpha value of the reliability coefficient
C) How well subjects perform on the questionnaire at one time compared to another time
D) The consistency by which multiple subjects are able to complete the questionnaire without error

Answers

B) The alpha value of the reliability coefficient is one way to establish the validity of a questionnaire.

What is equation?

In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign.

Here,

The alpha value of the reliability coefficient, also known as Cronbach's alpha, measures the internal consistency of a questionnaire. It indicates how well the items on the questionnaire are related to each other and form a consistent measure of the concept being assessed. A high alpha value indicates that the items on the questionnaire are measuring the same underlying concept and that the questionnaire is reliable.

Correlation between the score on the questionnaire and another measure of the same concept (Option A) and consistency by which multiple subjects are able to complete the questionnaire without error (Option D) can also provide information about the reliability of a questionnaire.

The alpha value of the reliability coefficient is one way to establish the validity of a questionnaire.

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Does anyone know the answer to this question?

Answers

Answer:

x = 41

Step-by-step explanation:

Supplementary Angles rule (straight lines in total have the angle of 180):

180 - 147 = 33

Total angles in a triangle equal 180:

180 - 33 - 106 = x

x = 41

I think is 41 degrees

Solomon has read 1/3 of his book. He finishes the book by reading the same amount each night for 5 nights. a. What fraction of the book does he read each of the 5 nights?​

Answers

He read 1/15 of his book each night

Problem #5
A silo is shaped like a cone and contains wheat. The radius is 10 feet and the height is 15
feet. If the silo can release wheat from its bottom at the rate of 25 cubic feet per minute, how
long would it take for the silo to empty fully? Round your answer to the nearest minute. Use
the approximate value of л, that is 3.14.

Answers

The volume of wheat in the silo is about 1,570 feet and it would take about 63 minutes at the given rate for the silo to empty fully.

What is volume?

The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

Various forms have various volumes. We have studied the several solids and forms that are specified in three dimensions, such as cubes, cuboids, cylinders, cones, etc., in 3D geometry. We will discover how to find the volume for each of these shapes.

The silo is in the shape of cone, so use the formula of volume of a cone to find volume of wheat the tank can hold.

The formula to find volume of a cone is:

V = 1/3 · πr2h -----(1)

Substitute π ≈ 3.14, r = 10 and h = 15 in (1).

V ≈ 1/3 · 3.14 · 102 · 15

V ≈ 1/3 · 3.14 · 100 · 15

V ≈ 1,570

So, the volume of wheat in the silo is about 1,570 feet.

Silo can release wheat from its bottom at the rate of 25 cubic feet per minute.

= 1,570 / 25

= 62.8

≈ 63

Hence, it would take about 63 minutes for the silo to empty fully.

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Could you please help me with 1, 2, 3, 4, 6, and 8 please it will mean a lot

Answers

After rewriting the expression [tex]4 ^ {( 2x -4)}[/tex] using distributive property, [tex]4^{2x} . 4^{-4}[/tex] is the equivalent expression.

Describe expression.

In mathematics, it is acceptable to multiply, divide, add, or negate. The construction of an expression looks like this: Amount, a mathematical operator, and an expression A mathematical expression's variables can be numbers, amounts, or functions (such as addition, subtraction, multiplication or division etc.)

Contrasting concepts and language is typical practice. Any mathematical statement that rates systems, numbers, and then an arithmetic operation between them is referred to as an expression, sometimes known as a formula. For instance, the arithmetic operator + separates the word m from the terms 4m and 5 in the balanced formula, just as it does for the variable m in the phrase 4m + 5.

given

Expressions that are equivalent do the same thing even when they have distinct appearances.

Two quadratic expressions that are analogous have the same value when we use the same value for the variable.

[tex]4 ^ {( 2x -4)}[/tex]

[tex]4^{2x} . 4^{-4}[/tex]

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A ladder leans against the wall of a building. The ladder measures
41 inches and forms an angle of 42° with the ground. How far from
the ground, in inches, is the top of the ladder? How far from the
wall, in inches, is the base of the ladder? Round to two decimal
places as needed.

Answers

We can use trigonometry to solve this problem. Let's call the height of the ladder "h" and the distance from the wall to the base of the ladder "d".

From the problem, we know that the ladder forms a 42° angle with the ground. This means that the sine of the angle is equal to the opposite side (h) over the hypotenuse (41 inches):

sin(42°) = h/41

We can solve for h by multiplying both sides by 41 and taking the sine of 42°:

h = 41 × sin(42°)

h ≈ 28.61 inches

So the top of the ladder is about 28.61 inches from the ground.

To find the distance from the wall to the base of the ladder, we can use the cosine of the angle:

cos(42°) = d/41

We can solve for d by multiplying both sides by 41 and taking the cosine of 42°:

d = 41 × cos(42°)

d ≈ 31.15 inches

So the base of the ladder is about 31.15 inches from the wall.

given the following frequency table of values, is the mean or the median likely to be a better measure of the center of the data set? value232425262728frequency434424

Answers

The Mean likely to be a better measure of the center of the data set.

What are mean and median?

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

Since Median represents the middle value of the given data when arranged in a particular order.

The measure of central tendency is the value that best describes a data set.

The measure of central tendency could be the mean, mode, and median

Recall that the best measure of central tendency is the mean

In this exercise, since the data values and the frequency of occurence, the measure of center that best describes the set of data in the table is the mean (Average).

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A pool has a depth of 12 feet and a width of 14 feet. If it holds 1680 cubic feet of water, what is the length of the pool

Answers

Answer:

Step-by-step explanation:

Volume is whl.

= 1680 = (14)(12)(x)

= 1680 = 168x

= x = 10

The length is 10ft

Answer: 10 Feet

Step-by-step explanation:

Volume of pool = Length x Width x Depth = LxWxD  

We know  D = 12 feet   W = 14 feet  

So  Lx  14 x 12 = 1680      Solving for L = 10 feet

A house painter knows that he can cover 400 square feet with a gallon of paint.
Write an equation that shows how the number of square feet the painter can cover, y, depends on the number of gallons of paint available, x

Answers

The equation that shows how the number of square feet the painter can cover, y, depends on the number of gallons of paint available, x is y = 400x.

What is an Equation?

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

A house painter knows that he can cover 400 square feet with a gallon of paint.

Let x be the number of gallons of paint.

Let y be the number of square feet the painter can cover.

Number of square feet the painter can cover with 1 gallon of paint = 400

Number of square feet the painter can cover with x gallon of paint = 400x

So y = 400x

Hence the required equation is y = 400x

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If (fg)(x) = h(x) such that h of x is equal to the square root of the quantity 8 times x plus 6 end quantity which of the following could accurately represent f and g?

f of x is equal to the square root of the quantity 4 times x plus 3 end quantity and g of x is equal to the square root of the quantity 4 times x plus 3 end quantity
f of x is equal to the square root of the quantity 4 times x plus 3 end quantity and g of x is equal to the square root of 2
f (x) = 8x + 6 and g of x is equal to the square root of x
f of x is equal to the square root of x and g(x) = 8x + 6

Answers

The possible definitions of f(x) and g(x), considering the composition of the functions, are given as follows:

[tex]f(x) = \sqrt{x}[/tex]g(x) = 8x + 6.

What is the composite function of f(x) and g(x)?

The composite function of f(x) and g(x) is given by the following rule:

(f ∘ g)(x) = f(g(x)).

It means that the output of the inside function serves as the input for the outside function.

The functions for this problem are defined as follows:

[tex]f(x) = \sqrt{x}[/tex]g(x) = 8x + 6.

As the composition of the functions is then given as follows:

[tex]h(x) = f(g(x)) = f(8x + 6) = \sqrt{8x + 6}[/tex]

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Can someone help me find the area of this please
Edit: Nevermind i just realised what i did wrong lol

Answers

The area of the given shape is  90.4  cm².

What is the area?

The area is the entire amount of space occupied by a flat (2-D) surface or an object's shape.

On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a shape on paper is the area that it occupies.

Given the shape of the boat, which contain, a rectangle and two right triangles,

total area = area of rectangle + area of triangle,

dimensions of the rectangle are,

length = 12 cm width = 5.2 cm

area of rectangle = l*b

area of rectangle = 12*5.2

area of rectangle = 62.4 cm²

area of triangle = 1/2*b*h

height = 8 cm

total base of both triangles = 3 + 4

base = 7 cm

area of triangle = 1/2*8*7

area of triangle = 28 cm²

total area =  62.4 cm² + 28 cm²

total area = 90.4  cm²

Hence the area is 90.4  cm².

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A cubic polynomial function f has a leading coefficient of 2 and a constant term of 5. When f(-1) = 2 and F(1) = 14, what is f(0.5)?
f(0.5) = ?
Explain your reasoning.

Answers

The value of the cubic polynomial evaluated at x = 0.5 is equal to 8.

How to derive a cubic polynomial

In this problem we find the case of a cubic polynomial in standard form:

y = a · x³ + b · x² + c · x + d


Where a, b, c, d are real coefficients.

The values of the coefficients must be determined on the knowledge of the leading coefficient (a = 2), the constant term (d = 5) and two values (y(- 1) = 2, f(1) = 14). First, substitute the leading coefficient and the constant term in the definition:

y = 2 · x³ + b · x² + c · x + 5

y - 2 · x³ - 5 = b · x² + c · x

Second, form the system of linear equations by using the given values:

b - c = - 1

b + c = 7

Third, solve the resulting system by numerical methods:

(b, c) = (3, 4)

Fourth, write the resulting polynomial:

y = 2 · x³ + 3 · x² + 4 · x + 5

Fifth, evaluate the polynomial at x = 0.5:

y = 2 · 0.5³ + 3 · 0.5² + 4 · 0.5 + 5

y = 8

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y varies as t. If y = 6 when t =4, calculate:
a) the value of y, when t = 6
b) the value of t, when y = 4

Answers

Answer:

see explanation

Step-by-step explanation:

given y varies as t , then the equation relating them is

y = kt ← k is the constant of variation

to find k use the condition y = 6 when t = 4

6 = 4k ( divide both sides by 4 )

[tex]\frac{6}{4}[/tex] = k , that is

k = [tex]\frac{3}{2}[/tex]

y = [tex]\frac{3}{2}[/tex] t ← equation of variation

(a)

when t = 6 , then

y = [tex]\frac{3}{2}[/tex] × 6 = 3 × 3 = 9

(b)

when y = 4 , then

4 = [tex]\frac{3}{2}[/tex] t ( multiply both sides by 2 to clear the fraction )

8 = 3t ( divide both sides by 3 )

[tex]\frac{8}{3}[/tex] = t

Use the figure below to answer the following questions.
10.
Name the vertex of the angles.
11.
12.
Name a point in the interior of ZCOB.
Name the sides of 22.
B
Q.
57°
2
43°
°F
A

Answers

1) Vertex -  A,B,C,O,Q,F

2) Points in the interior of ∠COB - Q,F

3) Sides of ∠2 - side OC and side OA.

What is Interior angles?

Interior angles can be generated in two methods in geometry. The first occurs within a polygon, whereas the second occurs when parallel lines are cut by a transversal. Angles are classified into many sorts based on their measurements.

1) Vertex of angles would be A,B,C,O,Q,F

2) The points in the interior of ∠COB would be, Q,F

3) The sides of ∠2 would be, side OC and side OA.

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help me: A circle has a diameter of 140 cm.
Work out the circumference of the circle.
Give your answer correct to 3 significant figures.

Answers

Answer:

440cm (to 3 s.f.)

Step-by-step explanation:

circumference= πd

= π×140

= 440cm (to 3 s.f.)

Circumference =diameter * pi number

140*3.14= 439.6

Let g(x) be the indicated transformation of f(x). Write the rule for g(x).
7. f(x)=2x, shift the graph vertically 2 units
8. f(x)= x-3; horizontal stretch by a factor of 3
9. f(x)=X: vertical compression by a factor of
Let g(x) be the indicated combined transformation of f(x) = x. Write
the rule for g(x).
10. horizontal stretch by a factor of 5 followed by a horizontal
shift right 2 units
11. vertical shift down 3 units followed by a vertical compression
by a factor of
12. reflection across the y-axis followed by
a vertical shift up 4 units
Solve.
13. Tia's earnings can be represented by the function f(x) = 5x + 120,
where x is the number of hours she works. If she works 3 additional
hours, her earnings function is g(x) = 5(x + 3) + 120. What type of
transformation can be applied to the graph of fto get the graph of g?

Answers

Answer:

g(x) = 2x + 2

g(x) = 3(x-3)

g(x) = 1/3x

g(x) = 5(x + 2)

g(x) = 1/3(x - 3) + 3

g(x) = -x + 4

Vertical shift of 3 units to the right.

Step-by-step explanation:

I don’t get how to do this please help!

Answers

Answer:

Length = 5 cm

Width = 3 cm

Step-by-step explanation:

Part (a)

Length L = c

(i) Width W = c- 2 (width is 2 cm less than width)

(ii) Area of the rectangle = L x W
= c(c - 2) = c² - 2c

Part (b)
Area is given as 15 cm²

Therefore, c²- 2c = 15

Part (c)

The equation for area from part (b) is

c² - 2c = 15

Carry 15 to the left side by subtracting 15 from both sides:
c²- 2c - 15 = 15 - 15

c²- 2c - 15 = 0

This is a quadratic equation which can be solved easily by factoring

The factors of the constant 15 are 5 and 3
The constant is product of the factors is -15; so one of the numbers is negative

The sum of the numbers is the coefficient of c

Since this -2, the numbers are -5 and 3

Therefore the factorization of the equation

c² - 2c - 15 = (c + 3)(c - 5)

And since c² - 2c - 15 = 0 this means  (c + 3)(c - 5) = 0

So either c + 3 = 0 ==> c = -3 which can be rejected because length cannot be negative

This gives us
c - 5 = 0

Or c = 5

So length = 5 cm

Since width = c - 2

width = 5 - 2 = 3

Length = 5

Width = 3

There are 48 new houses being built in a neighborhood last month 2/3 of them were sold this month 1/4 of the remaining houses were sold how many houses are left to be sold 

Answers

Answer:

12

Step-by-step explanation:

2/3 of 48 is 32, 16 leftover.

1/4 of 16 is 4, 12 leftover

answer=12

What do I have to do

Answers

Answer:

Could you upload the whole picture? I think I can help but I don't understand what's it's asking.

Step-by-step explanation:

..

I hope this helps : )

Hurry 4 1/2 -(2 1/3-1 1/4)

Answers

13/4 is the value of  [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

What is Fraction?

A fraction represents a part of a whole.

The given expression is [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

Convert each mixed fraction to improper fraction

9/2-(5/2-5/4)

9/2-(10-5/4)

9/2-5/4

LCM of 4 and 2 is 4

18-5/4

13/4

Hence, 13/4 is the value of  [tex]4\frac{1}{2} -(2\frac{1}{2}-1 \frac{1}{4})[/tex]

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