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3 years ago

All of the numbers in these multiplication problems are rational, which means that each of these numbers can be written as a

Mathematics

2 answers:

inna [77]3 years ago

6 0

Any rational number can be written as a fraction.

Ksju [112]3 years ago

3 0

Answer: fraction

Step-by-step explanation:

got it right on edgenuity

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WILL MARK BRAINLEIST!!

Darina [25.2K]

Answer:

x = 12.26

Step-by-step explanation:

sin = opp/hyp

sin 50 = x/16

multiply both sides by 16

16 * sin50 = x

Use calculator

x = 12.256711089903649

Rounded

x = 12.26

8 0

3 years ago

Read 2 more answers

A portable table tennis set costs $30 before a 30% discount. What is the sale price?

Mama L [17]

Answer:

30% of 30 is 9, so the sale price is $21.00

Step-by-step explanation:

use a calculator and find 30% of 30$, then subtract the value from the calculator, boom, done.

6 0

3 years ago

Read 2 more answers

Select all of the true statements about the standard deviation of a quantitative variable. 1. Standard deviation is resistive to

andrezito [222]

Answer:

Considering the first statement

Standard deviation is resistive to unusual values

This statement is false because standard deviation is the numeric measure of deviation of the each observation from the mean

Considering the second statement

The standard deviation of a set of values is equal to 0 if and only if all of the values are the same.

This statement is true because standard deviation is the numeric measure of deviation of the each observation from the mean.

Considering the third statement

Standard deviation is never negative.

This statement is true because standard deviation is the numeric measure of deviation of the each observation from the mean.

Considering the fourth statement

Changing the units of a set of values (e.g., converting from inches to feet) does not affect its standard deviation

This statement is false because standard deviation is the numeric measure of deviation of the each observation from the mean

Considering the fifth statement

If a set of values has a mean of 0 and a standard deviation that is not 0, then adding a new data point with a value of 0 will have no effect on the standard deviation.

This statement is false because , let take an example

x -4 - 3 0 3 4

Generally the mean is mathematically evaluated as

$\= x = \frac{\sum x_i }{n}$

=> $\= x = \frac{-4+ (- 3)+ 0 + 3 + 4 }{5}$

=> $\= x = 0$

Generally the standard deviation is mathematically evaluated as

$\sigma = \sqrt{\frac{\sum (x_ i - \= x )^2}{y} }$

$\sigma = \sqrt{\frac{ (-4 - 0 )^2 + (- 3 - 0 )^2 + (0 - 0 )^2 + (3 - 0)^2 + (4 - 0 )^2}{5} }$

=> $\sigma = 3.16$

Now when zero is removed the standard deviation is

$\sigma_1 = \sqrt{\frac{ (-4 - 0 )^2 + (- 3 - 0 )^2 + (3 - 0)^2 + (4 - 0 )^2}{4} }$

=> $\sigma_1 = 3.54$

Since $\sigma \ne \sigma _1$ the above statement is false

Considering the sixth statement

Standard deviation represents how far a group of values are from the mean of those values, on average.

This statement is true because standard deviation is the numeric measure of deviation of the each observation from the mean.

Step-by-step explanation:

5 0

3 years ago

A sawmill runs for three 4-hour shifts per day. It produces 500 2x4's per hour, which are divided into 50 piece bundles automatc

atroni [7]

It produces 500 per hour and those are divided into 50 piece bundles. so if we divide by 50 we will see how many bundles.
500/50 = 10.

it says that he does 10 bundles an hour and we found it makes 10 bundles per hour so it will take him the exact amount of hours that they run to load.the bundles.

it runs 3 shifts that are 4 hours. so to get the hours we can multiply 3 shifts by 4 hours
3 * 4 = 12 hours

if it did not.match we.could have kept going like this

so 10 bundles per hour for 12 hours is
10 * 12 = 120 bundles

he runs 10 bundles in an hour so we can divide the total by the amount per hour and gwr.how long it takes
120 / 10 = 12 hours

7 0

3 years ago

What to sides must be congruent

devlian [24]

Where is the problem so i can answer

6 0

3 years ago

Read 2 more answers