Need some help please

The quadrilateral is a trapezoid. The value of x is 5 by applying midsegment theorem for trapezoids.

The midsegment of a trapezoid is parallel to each base and its length is one half the sum of the lengths of the bases.

The side with length 21 units and 27 units are parallel to each other.

From the given diagram, the expression below is true:

5x-1 = (21 + 27)/2

2(5x - 1) = 21 + 27

10x - 2 = 48

10x = 48 + 2

10x = 50

Divide both sides by 10

x = 50/10

x = 5

Hence the value of x is 5

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The image of this question is probably this.

The probability of an event can be calculated from the odds against that event. The formula for converting odds against to probability is:

Probability = 1 / (1 + odds against)

So in this case, the odds against winning $1.00 in the lottery are 19 to 1, and the probability of winning can be calculated as follows:

Probability = 1 / (1 + 19) = 1 / 20 = 0.05

So the probability of winning $1.00 in the lottery is 0.05, or 5%.

Answer:

The answer to 19.32-23.5 is -4.18

Answer:

The slope is 30, and the y-intercept is 75.

Step-by-step explanation:

Use two points from the table, and find the equation of a line given two points.

Point 1: (1, 105)

Point 2: (3, 165)

y = mx + b

slope = m = (y_1 - y_1)/(x_2 - x_1)

m = (165 - 105)/(3 - 1) = 60/2 = 30

y = 30x + b

Use point (1, 105) for x and y.

105 = 30(1) + b

105 = 30 + b

b = 75

y = 30x + 75

The slope is 30, and the y-intercept is 75.

Answer:

106.

Step-by-step explanation:

7^2 + [ 81 - (4 x 6)]        First work out the exponential:

= 49 + (81 - (4 * 6)]         Work out the expression in the inner parentheses:

= 49 + [81 - 24]              Work out the expression in the parenthes:      

= 49 + 57                       Add:

= 106.

The equivalent expression for the given expression -x²+5x-4 is (x-4)(x-1).

The given expression is c² - 64.

What is the equivalent expression?

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

1) The factorization of c² - 64 is as follows:

Now, factors of c² - 64 is c² - 8²=(c-8)(c+8)

2) 12y² -75 = 3 (4y²-25)

= 3((2y)²-5²)

= 3 (2y+5)(2y-5)   (∵ a²-b²=(a-b)(a + b))

3) 9y²-36 = 9(y²-4)

= 9(y²-2²)

= 9(y-2)(y+2)   (∵ a²-b²=(a-b)(a + b))

4) -x²+5x-4

= x²-5x+4

= x²-4x-x+4

= x(x-4)-1(x-4)   (∵ a²-b²=(a-b)(a + b))

= (x-4)(x-1)

5) ab²-b

=b(ab-1)

Therefore, the equivalent expression for the given expression -x²+5x-4 is (x-4)(x-1).

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x-intercepts of the curved line are (-2,0) and (0,0)

The points where a line or curve intersects the chart's axes are called intercepts. When a point intersects the x-axis it is called the x-intercept. When a point intersects the y-axis,  it is called the y-intercept.

A line intercept is a point where it intersects  the x-axis or the y-axis. If no axis is specified,  the y-axis is normally considered. It is usually represented by the letter 'b'.

Given,

A curved line with a minimum value of (-1 , -2)

it crosses x-axis at (-2,0) and y-axis at (0,0)

We know that, x-intercept is the point where line crosses x-axis, y-coordinate = 0

x-intercepts are (-2,0) and (0,0)

Hence,  (-2.0) and (0,0) are x-intercepts of the curved line.

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Answer: (–2, 0), (0, 0)

Step-by-step explanation:

The correct statement regarding the similarity of the circles is given as follows:

A. Circle 1 is always similar to circle 2.

A dilation happens when the coordinates of the vertices of an image are multiplied by the scale factor, changing the side lengths of a figure.

Two circles are similar when one circle is a dilation of the other circle, and in this problem, we have that:

Hence the two circles are always similar and option a is correct.

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The missing angle measures are:

m2F = 50 degrees

m2H = 125 degrees

m2G  = 5 degrees

m2C  = 158 degrees

Since triangle ABC is similar to triangle FGH, the ratios of their corresponding angles are equal. Let's call the missing angles m2F, m2H, m2G, and m2C.

From the given information, we have:

m2F / mLA = m2H / mzB

So, we can find m2H by cross-multiplying and solving for m2H:

m2H = (mzB * m2F) / mLA

Since we don't know m2F, we can use the fact that the sum of the angles in a triangle is 180 degrees:

m2F + m2H + 75 = 180

So,

m2F + ((mzB * m2F) / mLA) + 75 = 180

Expanding and solving for m2F:

m2F + (75 * m2F / 22) + 75 = 180

(22 + 75) * m2F / 22 + 75 = 180

97 * m2F / 22 + 75 = 180

97 * m2F / 22 = 180 - 75

97 * m2F / 22 = 105

m2F = 105 * 22 / 97 = 50

So, the missing angle measures are:

m2F = 50 degrees

m2H = (75 * 50) / 22 = 125 degrees

m2G = 180 - 50 - 125 = 5 degrees

m2C = 180 - 22 = 158 degrees

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Spike-and-slab regression is a method used to model the relationship between a response variable and a set of predictor variables, and nonlinear constraints can be applied to the model to specify relationships between the predictor variables, such as monotonicity or convexity.

Spike-and-slab regression is a statistical method used to model the relationship between a response variable and a set of predictor variables, where the predictor variables are partitioned into two groups: a set of important predictors (spikes) and a set of unimportant predictors (slabs). Nonlinear constraints can be applied to the model to specify relationships between the predictor variables, such as monotonicity or convexity. These constraints can be used to enforce prior knowledge or assumptions about the relationships between the predictor variables, and can help to improve the accuracy and interpretability of the model. Examples of nonlinear constraints that can be used in spike-and-slab regression include the convexity constraint and the total variation penalty.

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The answer to this is 50/12, which is not a whole number. She would need 5 shelves (you have to round up a number because 4 shelves would only be able to fit 48 books)

Answer: 5 shelves  

Step-by-step explanation: you times 12x4 which gives you 48 but you need all 50 so you add a extra shelve so the total shelves is 5

Answer:

19 and 12

Step-by-step explanation:

The rule is y = 2x - 1

If x = 10, y = 19 because 20 - 1 = 19

If y = 23, x = 12 because 24 / 2 = 12

Answer:

the answer is 38.5 feet

Step-by-step explanation:

divide 7 by two the multiply by 11

The polynomial 6x³ - 8x⁴ + 5x + 12x² - 9 in standard form is -8x⁴ + 6x³ + 12x² + 5x - 9.

A polynomial is a type of algebraic expression in which the exponents of all variables should be a whole number.

The standard form of a polynomial is expressed by writing the highest degree of terms first then the next degree and so on.

Hence, let's write the polynomial in standard form as follows:

6x³ - 8x⁴ + 5x + 12x² - 9

Hence, in standard form,

6x³ - 8x⁴ + 5x + 12x² - 9 = -8x⁴ + 6x³ + 12x² + 5x - 9

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Answer:

21.15  550 divided by 26 = 21.15.

Step-by-step explanation:

I did the work on my paper. =)

The magnitude of acceleration of the car just before it reaches point C is -0.79 m/s^2.

The magnitude of acceleration of the car just before it reaches point C can be calculated using the given formula for acceleration, at= (-1/4t^1/2)m/s^2.

First, we need to determine the time it takes for the car to travel from point A to point C.

Since the speed of the car at point A is 25 m/s, and the speed at point C is 0 m/s, we can use the formula for speed, v=at, to find the time it takes for the car to travel from point A to point C.

Rearranging the formula, we get t=v/a.

Substituting the values for speed and acceleration, we get t=25/(-1/4t^1/2).

Solving for t, we get t^3/2 = -100.

Taking the square root of both sides, we get t=10 seconds.

Now, we can substitute the value of t back into the formula for acceleration to find the magnitude of acceleration just before the car reaches point C.

at= (-1/4t^1/2)m/s^2

= (-1/4)(10^1/2)m/s^2

= (-1/4)(3.16)m/s^2

= -0.79 m/s^2

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Answer:

Hi dear !!

area of semicircle = πr²/2

=> 3.14× 6x6 /2

3.14× 6× 3

=> 56.52 cm².

area of rectangle= l x b = 13 x 12 = 169

total area = 169 +56.52 = 225.5 cm²

Answer: I would say B.

Step-by-step explanation: why not pick B…..

Hope this help^^

Marisol keeps the account open for 12 years if Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year.

It is defined as the interest based on the principal amount, it does not include the compounded amount. The interest calculates on the initial amount or borrowed amount.

Given that, Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year.

Simple interest: SI = PRT

P = $5000

r = 5.75% = 0.0575

I = $8,450 - $5000 = $3450

3400 = 5000(0.0575[tex])^t[/tex]

t = 12 years

Thus, Marisol keeps the account open for 12 years if Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year.

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Answer:

W) 1/18=10/180

N) 2/15=4/30

F) 7/12= 84/144

S) 9/25= 36/100

D) 7/20=35/100

T) 9/10=36/40

M) 19/20=95/100

Step-by-step explanation:

W) is 10/180 as you need to multiply the numerator as the denominator.

N) is 4/30 as you need to multiply the numerator as the denominator.

F) is 84/144 as you need to multiply the numerator as the denominator.

S) is 36/100 as you need to multiply the numerator as the denominator.

D) is 35/100 as you need to multiply the numerator as the denominator.

T) is 36/40  as you need to multiply the denominator as the numerator.

M) is 95/100 as you need to multiply the numerator as the denominator.

The area of the rhombus is 384cm²

a rhombus is a type of quadrilateral. It is a special case of a parallelogram, whose all sides are equal and diagonals intersect each other at 90 degrees. This is the basic property of rhombus. The shape of a rhombus is in a diamond shape.

The area of a rhombus is given as:

PQ/2

Where and q are the diagonals of a the rhombus

A = PQ/2

But in these case the rhombus is a parallelogram, therefore the area = base × height

= 20× 19.2

= 384cm²

The area of the rhombus is 384cm²

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Answer:

x = 4.5

Step-by-step explanation:

Using Pythagoras theorem,

Hyp² = Opp² + Adj²

From the question,

Hyp = 9

Adj = Opp

Since Adj = Opp

Let,

Adj = Opp = a

and,

Hyp = b

Therefore,

b² = a² + a²

9² = 2a²

Cancelling equal exponents,

2a = 9

a= 4.5

For any given event, the probability of that event and the probability of the non-occurrence of the event must sum to one.

A probability is a number that reflects the chance or likelihood that a particular event will occur. Probabilities can be expressed as proportions that range from 0 to 1, and they can also be expressed as percentages ranging from 0% to 100%.

The probability of occurrence formula, also known to some as the “probability of occurrence formula PMP” is a tool for determining the chance that a given risk will occur. The formula requires two data points: number of favourable events possible and the total number of events possible.

Non occurrence patterns identifies the absence of events when detecting a pattern.

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Answer:

  A - scatter plot; it would show the relationship

Step-by-step explanation:

You want to determine if a scatter plot or line graph is a more appropriate way to represent the relationship between a manatee's weight and height.

The variables of concern in the data are weight and height. Time is not involved. (Eliminates choices B and D.)

It seems likely there may not be a functional relationship between weight and height. That is, manatees of the same weight may have different height, and vice versa. This suggests a line graph would not be a useful way to represent the relationship

A scatter plot in this case would be used to relate weight on one axis to height on the other axis. Any relationship between them would show up as grouped data points, or data points that generally fall on a line or curve.

Since the "marine biologist [is] interested in seeing the relationship between a manatee's weight and height", ...

  A scatter plot [is more appropriate] because it would show the association or relationship between the two variables.

__

Additional comment

As is often the case, the wording of the answer that matches the wording of the problem statement tells you which answer is appropriate.

Answer:A scatter plot, because it would show the association or relationship between two variables

Step-by-step explanation:

The standard form of the equation of the parabola with focus (0, 7) and the vertex at the origin is y = 1/28 x² + 7

A parabola is a symmetrical U-shaped curve that is defined by the set of all points that are equidistant to a fixed point, called the focus, and a straight line called the directrix. In a parabolic equation, the focus and the vertex are important points that determine the shape and position of the parabola.

In the case of the parabola with focus (0, 7) and the vertex at the origin (0,0), we can use the standard form of the equation of a parabola to write its equation. The standard form of a parabola is given by:

y = a(x - h)² + k

Where (h,k) is the vertex of the parabola and a is the coefficient that determines the direction and width of the parabola. To write the equation of this parabola, we need to find the value of a.

Since the focus is (0, 7) and the vertex is (0,0), we can use the formula:

a = 1/(4f)

Where f is the distance from the vertex to the focus. In this case, f = 7. Therefore, a = 1/(4 * 7) = 1/28.

Finally, we can substitute these values into the standard form to get the equation of the parabola:

y = 1/28 x² + 7

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The constant of variation for this relation is 10.

If y varies directly as x, we can write it as y = kx, where k is the constant of variation. This constant represents the relationship between x and y, and it determines how much y changes for a given change in x.

To find the constant of variation, we need to know the value of y and x. In this case, we are told that y is 12 when x is 1.2. Using this information, we can solve for k by dividing both sides of the equation by x:

y = kx

12 = k * 1.2

12 / 1.2 = k

k = 10

So the constant of variation is 10. This means that for every change of 1 in x, y will change by 10. In other words, if x increases by 1, y will increase by 10, and if x decreases by 1, y will decrease by 10.

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Answer:

Step-by-step explanation:

kaboom hope this helps

The volume of concrete is required to make the cylindrical tank is approximately 14 cubic meters.

Given that, external diameter = 10 m and an internal height = 3 m.

We know that, the volume of a cylinder is πr²h.

Volume of a tank with external dimensions = 3.14×5²×3

= 3.14×25×3

= 235.5 cm³

The walls and bottom of the tank are 30 cm thick

So, internal diameter = 1000-30 (10 m =1000 cm)

= 970 cm

= 9.7 m

= 4.85 m

Volume of a tank with internal dimensions = 3.14×4.85²×3

= 3.14×23.5225×3

= 221.58195 cm³

So, volume of concrete = 235.5-221.58195

= 13.91805

≈ 14 cm³

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Answer:

b = - 12

Step-by-step explanation:

calculate the slope of the line passing through the 2 points and equate to [tex]\frac{1}{2}[/tex]

calculate the slope ( gradient ) m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (4, 6 ) and (x₂, y₂ ) = (b, 2 )

m = [tex]\frac{2-6}{b-(-4)}[/tex] = [tex]\frac{-4}{b+4}[/tex]

equating gives

[tex]\frac{-4}{b+4}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

b + 4 = - 8 ( subtract 4 from both sides )

b = - 12

Using the formula to convert Fahrenheit to Celsius, we get that 100.8°F is 38.22°C.

To convert 100.8°F to °C, we can use the formula:

°C = (°F - 32) x 5/9

Plugging in the value of 100.8°F, we get:

°C = (100.8 - 32) x 5/9

°C = 68.8 x 5/9

°C = 38.22

Therefore, 100.8°F is equal to 38.22°C.

This formula is used to convert temperatures between the Fahrenheit and Celsius scales. It involves subtracting 32 from the Fahrenheit temperature and then multiplying by 5/9 to obtain the equivalent Celsius temperature. The resulting Celsius temperature is then rounded to the nearest tenth. It's important to note that Fahrenheit and Celsius are two different temperature scales, where 0°C is equal to 32°F, and 100°C is equal to 212°F. The Celsius scale is based on the freezing and boiling points of water, whereas the Fahrenheit scale is based on the freezing and boiling points of a solution of salt and water. Knowing how to convert between these two scales can be useful in a variety of settings, including cooking, weather reporting, and scientific research.

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