If 20% of some value is 400, then what is the missing value? In part (a), is the number 400 the part or the whole?

The quadrilateral with no pair of parallel sides is trapezium

Given data ,

A = a quadrilateral with no pair of parallel sides

This type of quadrilateral is called a trapezium. In some countries, a trapezium is defined as having exactly one pair of parallel sides, while in other countries, a trapezium is defined as having at least one pair of parallel sides.

In any case, a quadrilateral with no pair of parallel sides is not considered a trapezium. Instead, it is known as a general quadrilateral.

There are three types of trapezoids , and those are given below:

a) Isosceles Trapezoid

b) Scalene Trapezoid

c) Right Trapezoid

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Answer:23.75

Step-by-step explanation: 475 x 0.05

Answer:

x = 1/7

Step-by-step explanation:

add the two numbers with the x's and subtract 1 from 2. You'll get 7x = 1. Divide 7 from both sides to get x by itself.

Answer:

Exact Form: x=1/7

decimal form: 0.142857

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable. Hope this helps you better understand! Also, if you want to double check your answers try M-a-t-h-w-a-y. They won't let me write the exact link.

Answer:

9.55 cm

Step-by-step explanation:

A quadrant of a circle is 1/4 of a circle.

Since the curved edge is 15 cm, a full circle would be 60 inches.

60/Pi = diameter

diameter = 60/3.14 = 19.11 cm

diameter/2 = radius

radius = 19.22/2 = 9.55 cm which is the length of a straight edge.

The height of wall where the ladder will reach is 17.21 foot according to the angle and length of ladder.

The ladder, wall and ground will form a right angled triangle. Thus, height will be calculated based on the angle. So, sin theta = perpendicular/hypotenuse.

Perpendicular is the wall and hypotenuse is the length of ladder. Now,

sin 73° = perpendicular/18

Perpendicular = 18 × 0.96

Multiply the values on Right Hand Side of the equation

Perpendicular = 17.21 foot

Therefore, the length of the wall is 17.21 foot where ladder will reach.

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Answer: The answer is 25               then if it asks for the equation it is A=1/2bh

Step-by-step explanation:

The b or base is 10

The height or h is 5

A=1/2bh

A=1/2(10)(5)

A=1/2(50)

A=25

I hope this helps :)

Answer:

25m^2

Step-by-step explanation:

the formula for finding the area of a triangle is b*h/2. So 10 times 5 equals 50. When you divide 50 by 2 you get 25. 25m^2 Is the answer.

Answer:

The solution to the system of equations is;

Explanation:

Given the system of equations;

Multiplying equation 2 by 2 and subtracting from equation 1;

We can then substitute the value of y into equation 1, to get x;

Therefore, the solution to the system of equations is;

Answer:

the first day has the greater absolute value

Step-by-step explanation:

if this helps can i get brainliest please

a. A sample size of approximately 170 is needed if no estimate of p is available.

b. A sample size of approximately 135 is needed to construct a 98% confidence interval with a margin of error of 0.05, using the estimated proportion of 0.70.

c. If the educator wanted to estimate the proportion in the entire United States rather than in Colorado, the necessary sample size would be larger.

A confidence interval is a type of interval computation used in statistics that determines the true value of an unknown parameter based on the observed data. It is related to the degree of confidence that measures the degree of confidence at which the interval estimates the deterministic parameter.

a. To find the sample size needed for a 98% confidence interval with a margin of error of 0.05, we can use the formula:

n = (Z * √(p_hat * (1 - p_hat))) / E

where:

- n is the required sample size

- Z is the Z-value corresponding to the desired confidence level (98% in this case)

- p_hat is the estimated proportion (0.70)

- E is the margin of error (0.05)

Substituting the given values into the formula:

n = (Z * √(p_hat * (1 - p_hat))) / E

  = (2.33 * √(0.70 * (1 - 0.70))) / 0.05

  ≈ 134.64

Therefore, a sample size of approximately 135 is needed to construct a 98% confidence interval with a margin of error of 0.05, using the estimated proportion of 0.70.

b. If no estimate of p is available, we can use a conservative estimate of 0.5, which gives the maximum sample size required. Using the same formula as in part (a):

n = (Z * √(p_hat * (1 - p_hat))) / E

  = (2.33 * √(0.5 * (1 - 0.5))) / 0.05

  ≈ 169.64

Therefore, a sample size of approximately 170 is needed if no estimate of p is available.

c. If the educator wanted to estimate the proportion in the entire United States rather than in Colorado, the necessary sample size would be larger. This is because the United States has a larger population compared to Colorado, and when estimating proportions with a certain level of confidence and margin of error, a larger sample size is required to achieve the same level of precision. In other words, to estimate a population proportion with a given margin of error, a larger sample size is needed when the population size is larger.

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The  true statement based on the box-and whisker plot of 19 people are The median monthly salary is higher than the first quartile, The first quartile is higher than the minimum monthly salary, The third quartile is higher than the median monthly salary, The maximum monthly salary is higher than the third quartile, There are no outliers in the dataset.

A box-and-whisker plot provides a graphical representation of the five-number summary of a dataset: the minimum value, the first quartile (Q1), the median, the third quartile (Q3), and the maximum value. The box itself represents the middle 50% of the data (between Q1 and Q3), and the whiskers extend to the minimum and maximum values, with any outliers plotted as individual points.

Therefore, some possible statements that could be true based on the box-and-whisker plot of the monthly salaries of the 19 people are:

The first quartile is higher than the minimum monthly salary.

The third quartile is higher than the median monthly salary.

The median monthly salary is higher than the first quartile.

The maximum monthly salary is higher than the third quartile.

There are no outliers in the dataset.

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Answer:

(multiply both sides by 6)

6×\(\frac{4h+4}{6}\)-10×6=-2h×6

(simplify)

4h+4-60=-12h

4h-56=-12h

(move constant to the right side and variable to the left)

4h+12h=56

16h=56

(divide both sides by 16)

h=7/2

If the population density for the area is 18.8 residents per square mile, to the nearest hundred, approximately 34,000 residents would be infected.

When a virus is accidentally released from a CDC lab, and it infects everyone within a 24-mile radius from the CDC lab, then if the population density for the area is 18.8 residents per square mile, to the nearest hundred, how many people were infected.

The number of people infected within the 24-mile radius from the CDC lab is calculated as follows:

The area of a circle with a radius of 24 miles is A = πr²,

which is A = π(24²) = 1,809.56 square miles, and the population density for the area is 18.8 residents per square mile.

Therefore, the number of people infected is calculated by multiplying the area by the population density:

Residents infected = area x population density

= 1,809.56 x 18.8 ≈ 34,037.

Approximating to the nearest hundred yields 34,000.

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Question: find the slope of the line that passes through these two points. (1,3) (4,6)

Solution:

By definition, the slope of a line is given by the following equation:

where (X1,Y1) and (X2,Y2) are points on the line. In our case, we can take the points:

(X1,Y1) = (1,3)

(X2,Y2) = (4,6)

and replace them into the slope equation:

then, we can conclude that the correct answer is:

Answer:

The 1st option

Step-by-step explanation:

Remember BPEMDAS

B - Brackets

P - Parenthesis

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

She has to first multiply and distribute first, not add. Adding comes last.

Answer:

(-2,1) (-2,2) (-1,1) (-1,2)

Step-by-step explanation:

Answer:

720°

Step-by-step explanation:

To find the sum of interior angles of a hexagon, use the formula for the sum of the interior angles of any polygon, which is (n - 2) * 180°.

Since a hexagon has 6 sides, then the sum of interior angles is (6 − 2) * 180° = 4 * 180° = 720°

Answer: -4x²z²y + 12xz²y

Step-by-step explanation:-------------

Answer:

44 days

Step-by-step explanation:

165 divided by 3 3/5 (3.75)

stream Why Not? by Loona :D

Answer:

B

Step-by-step explanation:

pythagorean theorem !!

Answer:

for this one its b and c and im 100% sure of it

Step-by-step explanation:

An association between the two variables can be implied if the relative frequencies vary across the columns.

In a two-way table, the relative frequencies represent the proportion of observations within each cell relative to the total number of observations in that column. If the relative frequencies differ significantly across the columns, it suggests that there is an association between the two variables being examined. This indicates that the distribution of one variable is not independent of the other variable, and there may be a relationship or dependence between them. It is important to analyze the patterns in the data, perform additional statistical tests, and consider other factors to confirm the presence and strength of the association.

An association between the two variables can be implied if the relative frequencies vary across the columns.

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Answer:3,000,000 = 3 × 1,000,000 = 3 × 106. Notice that the exponent is the same as the number of zeros following the 3. Three million is a verbal expression, 3,000,000 is a decimal expression, and 3 × 106 is scientific notation.

Step-by-step explanation:

Answer:

"3,000,000 = 3 × 1,000,000 = 3 × 106. Notice that the exponent is the same as the number of zeros following the 3. Three million is a verbal expression, 3,000,000 is a decimal expression, and 3 × 106 is scientific notation."

Step-by-step explanation:

I use Google ;)

To determine the equation of the tangent plane and normal line of the given curve at the point P(2, -3, 18), we need to find the partial derivatives of the function f(x, y, z) = x^2 + y^2 - 2xy - x + 3y - z - 4.

Taking the partial derivatives with respect to x, y, and z, we have:

fx = 2x - 2y - 1

fy = -2x + 2y + 3

fz = -1

Evaluating these partial derivatives at the point P(2, -3, 18), we find:

fx(2, -3, 18) = 2(2) - 2(-3) - 1 = 9

fy(2, -3, 18) = -2(2) + 2(-3) + 3 = -7

fz(2, -3, 18) = -1

The equation of the tangent plane at P is given by:

9(x - 2) - 7(y + 3) - 1(z - 18) = 0

Simplifying the equation, we get:

9x - 7y - z - 3 = 0

To find the equation of the normal line, we use the direction ratios from the coefficients of x, y, and z in the tangent plane equation. The direction ratios are (9, -7, -1).Therefore, the equation of the normal line passing through P(2, -3, 18) is:

x = 2 + 9t

y = -3 - 7t

z = 18 - t

where t is a parameter representing the distance along the normal line from the point P.

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In order to find the value of the expression, first let's calculate the operations inside the parenthesis:

Then, calculating the exponential expression and after that the product, we have:

So the final value is 112.

Answer:

y =  6x²

Step-by-step explanation:

y ∝x²

y = kx²

If y = 96 and x = 4

96 = k(4)²

96 = 16k

k = 96/16

k = 6

Substitute back into the formula

y =  kx²

y =  6x²

Hence y in terms of x is y =  6x²

The correct correlation between the heights of husbands and wives in the U.S. is around -0.3. The correlation between the heights of husbands and wives in the U.S. is not as strong as some might assume. It is about -0.3.

This is not a strong negative correlation, but it is still a negative one, indicating that as the height of one partner increases, the height of the other partner decreases. This relationship may be seen in married partners of all ages. It's important to note that the correlation may not be consistent among various populations, and it may vary in different places. The correlation between husbands and wives' heights is -0.3, which is a weak negative correlation.

It indicates that as the height of one partner increases, the height of the other partner decreases. When there is a weak negative correlation, the two variables are inversely related. That is, when one variable increases, the other variable decreases, albeit only slightly. The correlation is not consistent across all populations, and it may differ depending on where you are. Nonetheless, when compared to other correlations, such as a correlation of -0.9 or 0.9, the correlation between husbands and wives' heights is a weak negative one.

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When a cylinder is intersected by a plane parallel to the bases, the resulting cross-section is a circle.

A cylinder is a solid geometric figure which has two parallel, congruent bases.

The bases are connected by a curved surface called a lateral surface. If a plane is made to intersect a cylinder, the resulting cross-section can be circular or elliptical, depending on how the plane intersects the cylinder.

In this case, if the plane intersects the cylinder parallel to the bases, the resulting cross-section is a circle because any section taken parallel to the base of a cylinder is congruent to the base.

This is true for both right cylinders and oblique cylinders.

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The area of the square pyramid building is the amount of space on it

The maximum base length of the building is 67.42 cm

The given parameters are:

The slant height will be five times the side length of the base

Base = b

Slant height (l) = 5b

The lateral surface area is calculated using:

L = 2bl

So, we have:

L = 2 * b * 5b

Evaluate the product

L = 10b^2

The total surface area is calculated using:

T = L + b^2

So, we have:

T = 10b^2 + b^2

Evaluate the sum

T = 11b^2

The maximum surface area is 50,000 square feet

So, we have:

11b^2 = 50000

Divide both sides by 11

b^2 = 50000/11

Take the square root of both sides

b = 67.42

Hence, the maximum base length of the building is 67.42 cm

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Answer:

1.4 grams of medison for thr whole week combinded

Answer:

1.4 g

Step-by-step explanation:

0.2 gram per day x 7 days = 1.4 g total consumed in a week