Therefore , the solution of the given problem of equation comes out to be 1.45 mph (speed of the current).
Explain equationA mathematical depiction of two equal things, one on either side of a "equals" sign, is called an expression. Equations can be used to solve common problems. To solve challenges in real life, we frequently turn for pre algebra assistance. Lessons in pre-algebra cover the foundational ideas of mathematics.
Here,
The 15 miles that Bob the Boy Scout must paddle upwards against the current takes him 10 hours.
He discovers that paddling 22.5 miles against the current only took him 5 hours when he turns back.
——
Upstream data: rate = d/t = 15/10 = 1.5 mph, distance = 15 miles, time = 10 hours.
————————
Downstream DATA: rate = d/t = 22/5 = 4.4 mph; duration = 5 hours; distance = 22 miles.
———————-
Equations:
upstream: Downstream, b-c = 1.5 mph; b+c = 4.4 mph
2b = 5.9 mph;
2b = 2.95; add and solve for "b" (speed of the boat in still water)
—-
For "c," use the formula
=> b + c = 4.4
=>2.95 + c = 4.4
=> c = 1.45 mph (speed of the current)
Therefore , the solution of the given problem of equation comes out to be 1.45 mph (speed of the current).
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4/9 down on a number line
Answer:
Step-by-step explanation:
!:}
-------------------------------------------------------------------------------------------------------------
0 1/9 2/9 3/9 4/9 5/9 6/9 7/9 8/9 9/9
Select the correct answer from each drop-down menu. A picture frame with an area of 60 square inches has a width, w, and a height that is 4 inches greater than the width. Write an equation to represent the area, and solve to find the width. Equation: Of the two solutions, only a width of inches makes sense in the context of the problem. Reset Next
The width of the picture frame with the given area would be = 3.9in
What is a frame?A frame is a structure that can be a rectangle or a square shape which is used to display a picture.
The area of the frame = 60in²
The width of the frame = x
The height of the frame = 4x
The area of a rectangle = length×width
That is ; 60 = X × 4x
60 = 4x²
make X the subject of formula;
X = √60/4
X = √15
X = 3.9 in.
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A)
Find the product of
f(x)=x²-x-4 and g(x)=x+4
With process
f(x)=[tex]x^{2}[/tex]-x-4 + g(x)=x+4 = the product is with process [tex]x^2+7 x+8$$[/tex] . It is the solution of f(x) and g (x) .
What do you meant by product ?[tex]$$f(x)=x^2-x-4, g(x)=x+4: x^2+7 x+8$$$$\begin{aligned}& \text { Find } f \circ g \text { given } f(x)=x^2-x-4, g(x)=x+4 \\& f \circ g=f(g(x)) \\& g(x)=x+4 \\& =f(x+4)\end{aligned}$$$$\begin{aligned}& f(x+4): \quad x^2+7 x+8 \\& =x^2+7 x+8\end{aligned}$$[/tex]
When a number is multiplied by another number, its products can be found. Because 9 x 3 Equals 27, for instance, 27 is a product of 9 and 3. What you get when you multiply two numbers together is their product. As a result, the product of three and four is twelve, followed by five and four, and so on.
A number that is obtained by multiplying two or more other numbers together is referred to in mathematics as a product. For instance, the result of multiplying 2 by 5 is 10 when the two numbers are combined. Byproducts include things like straw from grain harvesting operations, salt from desalination plants, sawdust from sawmills, and manure from feedlot operations.
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solve the following equations graphically
x + y=3 & x-3y= -5
Answer:
[tex](x,y)\rightarrow(1,2)[/tex]
Step-by-step explanation:
Multiply first equation by 3 to help cancel out the "y" variable:
[tex]\displaystyle \left \{ {{x+y=3} \atop {x-3y=-5}} \right.\\\\\rightarrow \left \{ {{3x+3y=9} \atop {x-3y=-5}} \right.[/tex]
Combine system of equations on both sides:
[tex](3x+3y)+(x-3y)=9+(-5)\\4x=9-5\\4x=4\\x=1[/tex]
Thus,
[tex]x+y=3\\1+y=3\\y=2[/tex]
What is the answer for x+4.5≥5.5
Answer:
B. x ≥ 1
Step-by-step explanation:
What is the area of a rectangle with a length of 14.4 inches and a width that is one-third of the length?
A. 43.2 in.
B. 51.84 in.
C. 69.12 in.
D. 103.68 in.
If you give the answer, please make sure it is correct and one of the answers on the group of answer choices! Thank you! :)
The area of the rectangle is 69.12 square inches.
What is the area of the rectangle?
We know that for a rectangle of length L and width W, the area is given by the formula:
A = L*W
Here we know that the length is 14.4 inches, then:
L = 14.4 in
And the width is one-third of that length, then we can write:
W = (1/3)*L
Replacing the value of L, we will get:
W = (1/3)*14.4 inches
W = 4.8 inches.
Then the area of the rectangle is:
A= (4.8 in)*(14.4 in) = 69.12 in²
That is the area of the rectangle.
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Ramona used the regression equation y =. 444x – 21. 29, where x represents height and y represents shoe size, to predict the approximate height of a man who wears a size 8. 5 shoe. 1. Y =. 444 (8. 5) minus 21. 29. 2. Y = 3. 774 minus 21. 29. 3. Y = negative 17. 52. Ramona determined that her answer was incorrect because a man who is –17. 52 inches tall does not make any sense. What was Ramona’s mistake? She substituted the 8. 5 for the wrong variable. She should have added. 444 and 8. 5. The value for y should be positive. The solution of –17. 52 should be the shoe size
Ramona’s mistake was she just substituted the 8.5 for the wrong variable.
From given conditions:
Ramona used the regression equation y = 444x - 21.29,
where x represents height and y represents shoe size,
According to Romana her answer is incorrect as a man who is -17.52 inches tall does not predict the approximate height of a man.
The 8.5 refer to shoes size, not height.
So substituting 8.5 for the x-variable is wrong, because x refers to height and y represents shoe size.
Therefore, Ramon just substituted the 8.5 for the wrong variable. She must replace 8.5 for y-variable, because that's the right one for shoe size.
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answer quick its due in ten minutes
The number of grams of sugar that would be in a 200 ml glass of juice, given the carton, is 13. 2 grams of sugar
How to find the number of grams of sugar ?In a 250 ml glass of juice, we would see 16. 5 g of sugar. Given this information, we can find the amount of sugar in a 200 ml of juice by using direct proportion.
The amount of sugar in 200 ml of juice is :
= ( Amount of sugar in 250 ml x Quantity of juice ) / Quantity of base quantity of juice
= ( 16. 5 x 200 ) / 250
= 3, 300 / 250
= 13. 2 grams of sugar
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write the equation of the line passing through the point (4, -6) with a slope of 1/2?
Answer:
Step-by-step explanation:
We know that , the equation of line when the slope and the coordinates are given is:
y - y1 = m(x - x1)
where x1 = 4 , y1 = -6 and m = 1/2
therefore, y -(-6) = 1/2(x - 4)
y + 6 = x/2 - 2
6+2 = x/2 - y
8 = x - 2y/2
16 = x - 2y
required equation : x-2y-16=0
question: 49a+26+11–3–6
Answer:
49a + 28
Step-by-step explanation:
Answer:
49a+28
Step-by-step explanation:
49a+26+11–3–6
49a+26+11-9
49a+26+2
49a+28
Brainliest!!!
A+school+is+going+on+a+trip.+There+will+be+3+buses+to+take+students.+On+each+bus,+there+are+80+seats.+Teachers+will+sit+in+3+of+the+seats+on+each+bus.+How+many+seats+are+available+for+students+on+the+buses? A. 240 B. 231 C. 83 D. 77
The solution is Option B.
Number of seats for the students is given by the equation A = 231 seats
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the number of seats for the students be A
Now , the equation will be
The total number of buses = 3 buses
The total number of seats on each buses = 80 seats
So , the total number of seats = number of buses x number of seats on each buses
Substituting the values in the equation , we get
The total number of seats = 80 x 3
The total number of seats = 240 seats
Now , the teachers has 3 seats each on 3 buses
So , the number of seats for teachers = 3 x 3 = 9 seats
And , the remaining number of seats = total number of seats of students
The total number of seats for students A = total number of seats - number of seats for teachers
Substituting the values in the equation , we get
The total number of seats for students A = 240 - 9
The total number of seats for students A = 231 seats
Therefore , the value of A is 231 seats
Hence , the number of seats for students is 231 seats
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What is the degree of the polynomial 7x3 5x 4x5 2x2?
The degree of the polynomial as calculated from the given data7x³ + 5x + 4x⁵ + 2x² is 5 .
The given polynomial is 7x³ + 5x + 4x⁵ + 2x²
To find the degree of the polynomial we will write the equation down in the descending power of x
which is ,
4x⁵ + 7x³ + 2x² + 5x
Here , the highest power of the variable that appears with nonzero coefficient is 5.
So ,degree of the polynomial is said to be 5.
The hightest power of the variable in a polynomial is known as the degree of the polynomial. A polynomial expression is made up of constants and variables.
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Can you help me with this
Answer:
m = 2
Step-by-step explanation:
Slope = rise / run or (y2 - y1) / ( x2 - x1)
Let's pick 2 points (0,0) (1,2)
We see the y increase by 2 and the x increase by 1, so the slope is
m = 2
The sides of a triangle are 68, 61, and 46. Use the Pythagorean Theorem to determine if the triangle is right, acute, or obtuse.
The triangle is an acute triangle using the Pythagorean theorem.
What is the Pythagorean theorem?Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
We have,
The sides of a triangle are 68, 61, and 46.
Note:
When the sum of the squares of two sides of a triangle is equal to the square of the hypotenuse, the triangle is a right triangle.
When the sum of the squares of two sides of a triangle is less than the square of the hypotenuse, the triangle is an obtuse triangle.
When the sum of the squares of two sides of a triangle is greater than the square of the hypotenuse, the triangle is an acute triangle.
Now,
68² = 4624
46² = 2116
61² = 3721
We see that,
We can never have a right triangle or an obtuse triangle.
The possible combination.
61² + 68² > 46²
61² + 46² > 68²
68² + 46² > 61²
Thus,
The triangle is an acute triangle.
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Select all the as that inequalities that have the same solution as -4x<20
A. -x<5
B. 4x>-20
C. 4x<20
D. X<-5
E. X>5
F. X>-5
Answer:
A, B, F
Step-by-step explanation:
Divide both sides of -4x<20 by 4, and we have A
Multiply both sides of -4x<20 by -1, since -1 is a negative number, we reverse the inequality, and we have B
Multiply both sides of -x<5 (A) by -1, since -1 is a negative number, we reverse the inequality, and we have F
Find the lengths of the diagonals of rectangle WXYZ.
WY = 14x + 10
XZ = 11x + 22
The length of each diagonal is
units.
The length of each diagonal is √(196x^2 + 816x + 324) units.
What is the formula for diagonal length?The diagonal of a rectangle can be estimated using the hypotenuse formula, such as using the Pythagorean theorem calculator.
WX^2 = WY^2 + XZ^2
Given that WY = 14x + 10 and XZ = 11x + 22, we can substitute those values in the equation:
WX^2 = (14x + 10)^2 + (11x + 22)^2
WX^2 = 196x^2 + 816x + 324
WX = √(196x^2 + 816x + 324)
The same goes for the other diagonal, WZ.
WZ = √(196x^2 + 816x + 324)
So, the length of each diagonal is √(196x^2 + 816x + 324) units.
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A circular sector has an 8.26-inch radius and a 12.84-inch arc length. There is another sector that has the same area and the same perimeter. What are its measurements
The dimensions of a different sector with the same area and perimeter are An alternative sector's radius is 6.42 inches. An alternative sector has an arc length of 16.52 inches.
What does an arc's length signify?The distance between two places along a segment of a curve is known as the arc length.
Sector radius, r = 8.26 inches
Sector arc length = 12.84 inches
Sector perimeter = 2r + length of the arc
The specified sector's perimeter is equal to 2 x 8.26 x 12.84 x 29.36 inches.
The circle's circumference is 2 + 8.26 + 16.52.
The specified circle's area is A = 8.262 * 68.2276.
Sector area, A = 53.0292 inch2
Consequently, we have;
2R plus A equals 29.36 inches
A·R = 53.0292 × 2
that provides;
R² + 53.0292 = 14.68·R
R² - 14.68·R + 53.0292 = 0
using a graphing calculator to factor yields;
(R - 6.42)·(R - 8.26) = 0
R = 6.42 or R = 8.26
R = 8.26 is the measurement for the first sector.
Due to the distinctions between the sectors, we have;
R = 6.42 inches is the radius of the other sector.
The length of the arc, A = 29.36 - 2R
∴ A = 29.36 - 2 × 6.42 = 16.52
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12. Sarah uses long division to convert
a rational number 2 to a decimal.
P
Which of the following statements
cannot be true?
A. The decimal form of P
q
terminates with a zero in the
tenths place.
B. The decimal form of P
eventually repeats.
C. The decimal form of never
terminates or repeats.
D. The decimal form ofis 0.
Kyle earns 11.2% commission on his sales at the electrical retail store. He made sales worth $8571 this month. how much commission has he earned? Give your answer to the nearest dollar.
Answer:
Sales=8571$
Commission=11.2% of Sales
=11.2/100 × 8571$
=(11.2×8571)/100 $
=959.952$ Which is nearly equal to 960$.
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This is chemistry, but I asked two times when I picked chemistry as the subject, yet no one answered, so I am doing mathematics because this does include math.
Show ALL your WORK and make sure to LABLE all the numbers with the CORRECT UNITS; if you do, I will give you the brainliest:
A: A sample of sulfuric acid has a mass of 15.0 g. How many molecules are in this sample?
B: How many moles of sulfuric acid are present in 45 g of this sample?
C: How much would a .750 mole sample of Ammonium sulfate weigh?
D: What is the mass percent of hydrogen in this sample?
PS: Please do not spam or give the wrong answer; I will report the comment, the "answer', and your account if you do.
The number 1341 can be written as the sum of three consecutive positive integers. What is the largest of these integers
x = 448, which is the greatest of these integers.
What are integers ?Positive, negative, and zero are all examples of integers.
The Latin word "integer" signifies "whole" or "intact."
As a result, fractions and decimals are not included in integers.
All whole numbers and negative numbers are considered integers.
This means that if we combine negative numbers with whole numbers, a collection of integers results.
An integer, which can comprise both positive and negative integers, including zero, is a number without a decimal or fractional portion.
Here are a few instances of integers: -5, 0, 1, 5, 8, 97, and 3,043. a collection of numbers, denoted by the symbol Z.
According to our question-
added together =1341
x + x-1 + x-2 =1341
3x-3 = 1341
3x = 1344
x = 448
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Cooper is a shoe sillesman, and he works on commission. This week, there is a special incentive to sell shoes and boots by a certain company. Yesterday, Cooper sold 2 pairs of shoes and 10 pairs of boots, earning $160 in commission. Today, he sold 4 pairs of shoes and 10 pairs of boots, earning a total commission of $170. How much does Cooper earn for the sale of each type of footwear?
The commission from selling each pair of shoe is $5 while that from selling each boot is $15
What is an equation?An equation is an expression composed of variables and numbers linked together by mathematical operations.
Let x represent the commission earned from selling each pair of shoe and y represent the commission from selling each pair of boot.
Cooper sold 2 pairs of shoes and 10 pairs of boots, earning $160 in commission. Hence:
2x + 10y = 160 (1)
Also, he sold 4 pairs of shoes and 10 pairs of boots, earning a total commission of $170, hence:
4x + 10y = 170 (2)
From both equations:
x = 5, y = 15
The commission from selling each pair of shoe is $5
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OMG PLEASE HELP FAST, Write the equation of the line in fully simplified slope-intercept form.
The equation of the line in the attached graph in slope intercept form is written as
y = -6x + 2How to write the equation of the lineThe slope, m of the linear function is calculated using the points on the graph (1, -4) and (2, -10)
m = (y₀ - y₁) / (x₀ - x₁)
plugging in the values and evaluating
m = (-10 + 4) / (2 - 1)
m = (-6) / (1)
m = -6
equation passing through point (2, -10), using the point slope formula
(y - y₁) = m (x - x₁)
y - (-10) = -6(x - 2)
y + 10 = -6x + 12
rearranging the equation
y = -6x + 12 - 10
y = -6x + 2
The equation of the line in slope intercept form is written as y = -6x + 2
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What is the product of 3p and 4p² 5p 7?
The product of 3p, 4p² and 5p 7 is 120p⁹.
What is product?Product is an item or thing that is created or produced by a business. It can refer to both physical and intangible items, such as machines, food, software, intellectual property, or services. The concept of a product is used in many different industries, including manufacturing, retail, technology, and finance. Products are typically sold in exchange for money, but can also be given away or traded. Products are an essential part of any business, as they are what generate income for a company.
This can be calculated by multiplying 3p (3 x p) with 4p² (4 x p²) and 5p 7 (5 x p x 7). The result of this multiplication is 120p⁹ (3 x 4 x 5 x p x p² x 7).
To understand this calculation better, we can break it down into its component parts.
The 3p component is 3 x p, which gives us 3p. The 4p² component is 4 x p², which gives us 4p². The 5p 7 component is 5 x p x 7, which gives us 5p 7. When these three components are multiplied together we get 3 x 4 x 5 x p x p² x 7,which is equivalent to 120p⁹.
In conclusion, the product of 3p, 4p² and 5p 7 is 120p⁹.
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Josiah bought a new car for $25,000. He did some research and found that the value of his car would depreciate at an average rate of $3,750 per year. The table shows data about the value of his car over the next 4 years.
Number of Years Owned 1 2 3 4
Car Value $ 25000 21250 13750 10000
Express the relation as a set of ordered pairs.
Identify the domain and range of this relation.
Is this relation a function?
The domain is the set of years, which is {1, 2, 3, 4}, and the range is the set of values, which is {25000, 21250, 13750, 10000}. The ordered pairs of this function are (1, 25000), (2, 21250), (3, 13750), (4, 10000).
The relation described above can be expressed as a set of ordered pairs by calculating the value of the car for each year based on the depreciation rate. Let's calculate the value of the car for each year:
Year 1: 25000
Year 2: 25000 - 3,750
= 21250
Year 3: 21250 - 3,750
= 13750
Year 4: 13750 - 3,750
= 10000
Therefore, the ordered pairs of this relation are
: (1, 25000), (2, 21250), (3, 13750), (4, 10000).
The domain of this relation is the set of years, which is {1, 2, 3, 4}, and the range is the set of values, which is
{25000, 21250, 13750, 10000}.
This relation is a function because each input (year) is associated with one output (value).
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A water desalination plant can produce 2.8 * 10 to the power of 6 gallons of water in one day. How many gallons can it produce in 5 days?
Thus , multiplication factor answer is water desalination plant can produce 2.8 x 10⁶ gallons per day. Thus, it can produce 1.4 x 10⁷gallons in 5 days.
What is the difference between factors and multiplies?A multiple is a number that can be divided by another number a certain number of times without a remainder. A factor is one of two or more numbers that divides a given number without a remainder. Multiplication is one of the four basic arithmetic operations, alongside addition, subtraction, and division. In math, multiply means the repeated addition of groups of equal sizes. To understand better, let us take a multiplication example of the ice creams. Each group has ice creams, and there are two such groups.
Here,
So if there was 5 days, it would produce 5 times the amount above.
So 5 × (2.8 × 10⁶) = 14 × 10⁶
We must rewrite in scientific notation, so:
14 x 10⁶ = 1.4 x 10⁷
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Thus , multiplication factor answer is water desalination plant can produce 2.8 x 10⁶ gallons per day. Thus, it can produce 1.4 x 10⁷gallons in 5 days.
What is the difference between factors and multiplies?A multiple is a number that can be divided by another number a certain number of times without a remainder. A factor is one of two or more numbers that divides a given number without a remainder. Multiplication is one of the four basic arithmetic operations, alongside addition, subtraction, and division. In math, multiply means the repeated addition of groups of equal sizes. To understand better, let us take a multiplication example of the ice creams. Each group has ice creams, and there are two such groups.
Here,
So if there was 5 days, it would produce 5 times the amount above.
So 5 × (2.8 × 10⁶) = 14 × 10⁶
We must rewrite in scientific notation, so:
14 x 10⁶ = 1.4 x 10⁷
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Subtract (9x-12)-(5x-7)
Answer:
Step-by-step explanation:
(9x-12)-(5x-7)=9x-12-5x+7=9x-5x-12+7=4x-5
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Teresa wrote this expression to describe the total distance she was going to swim during two swim classes s+3 which situation could be described by this expression
The correct answer of expression 's+3' is (c) Teresa wasn't sure how far she would swim during the first class. She would swim 3 laps during the second class. She used the sign "+" instead of "x" or any other notation.
What is an expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows:
Expression is (Number/variable, Math Operator, Number/variable)
The answer here should be Option C, as she used the sign "+" instead of "x" or any other notation. She wanted to add something.
And as it is very clear that she wanted to write the information about two classes, so that makes the second term for second class and first term for first class.
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The complete Question is:
Teresa wrote this expression (s+3) to describe the total distance she was going to swim during two swim classes. Which situation could be described by this expression?
A. Teresa wasn't sure how far she would swim during the first class. She would swim 3 fewer laps during the second class.
B. Teresa wasn't sure how far she would swim during the first class. She would swim the same distance for 3 classes.
C. Teresa wasn't sure how far she would swim during the first class. She would swim 3 laps during the second class.
D. Teresa wasn't sure how far she would swim during the first class. She would swim 3 times farther during the second class.
Points E and Flie on a circle, centre O.
The radius of the circle is 10 cm.
The area of the shaded sector is 65cm².
Diagram not drawn to scale
Calculate the size of angle EOF
(3 marks)
The measure of the angle of the shaded sector with an area of 65 cm² is 74.5°
What is an equation?An equation is used to show the relationship between numbers and variables.
The area of a two dimensional shape is the amount of space it occupies.
The area of a sector in a circle is given by:
Area = (Ф/360) * π * radius²
Where Ф is the sector angle
Given that sector area is 65 cm², radius is 10 cm, hence:
Area = (Ф/360) * π * radius²
Substituting gives:
65 = (Ф/360) * π * 10²
Ф = 74.5°
The measure of the angle is 74.5°
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PLEASE HELPPP
what is the simplified expression for (picture below)
Answer:
[B] 6²
Step-by-step explanation:
Given:
[tex]\frac{6^4\cdot \:6^3}{6^5}[/tex]
Solve:
Add the exponents - [tex]6^4 \times 6^3=6^7[/tex]
Now we have - [tex]\frac{6^7}{6^5}[/tex]
Exponent Rule: [tex]\frac{x^a}{x^b}=x^{a-b}[/tex]
Which means - [tex]\frac{6^7}{6^5}=6^{7-5}[/tex]
Subtract the exponent - [tex]6^2[/tex]
Hence, the answer is [B] 6²
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