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2 years ago

ZA and B are supplementary and vertical angles. What is m<B

Mathematics

1 answer:

Marat540 [252]2 years ago

6 0

<h3>Answer: 90</h3>

Reason:

Vertical angles are equal to each other. Call them x. They must add to 180 degrees because they are supplementary (they are able to form a straight line).

x+x = 180

2x = 180

x = 180/2

x = 90

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A purse contains $1.15 in nickles and dimes and has 20 coins. How many nickles are in the purse?

lisov135 [29]

There are 23 nickles in her purse

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3 years ago

If the standard deviation of a set of data is zero, what can you conclude about the set of values? The sum of the deviations fro

Rashid [163]

Answer:

All values are identical.

Step-by-step explanation:

We are given the following in the question:

If the standard deviation of a set of data is zero.

Then, all the values in data are identical.

This can be shown as:

Let all the terms in data be x.

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{nx}{n} = x$

Sum of squares of differences =

$\displaystyle\sum (x_i - x)^2 = 0$

$\sigma = \sqrt{\frac{0}{n}} = 0$

Thus, the correct answer is

All values are identical.

3 0

4 years ago

One number is 10 less than 5 times the second number. Their sum is 26. Find the numbers.

GREYUIT [131]

Answer:

Step-by-step explanation:

a = 5b-10

a+b = 26

(5b-10)+b = 26

b = 6

a= 5b + 10 = 40

8 0

3 years ago

Read 2 more answers

Picture attached help plssss

kramer

Answer:

Step-by-step explanation:

7 0

3 years ago

−3x+5y=2x+3y ordered pairs

NeTakaya

Answer:

y=5/2x

Step-by-step explanation:

5x=2y

y=5/2x

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6 0

3 years ago