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3 years ago

Inverse operations add up, multiply, divided?

Mathematics

1 answer:

maxonik [38]3 years ago

3 0

Answer:

Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7.

Another Example: Multiplication and division are inverse operations. Start with 6, multiply by 2 we get 12, now divide by 2 and we get back to 6.

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2y-32x= 32-2y= What are the different answers

monitta

Answer:

ES 2 YO QUE SE A LA MIERDA djdjfjfjdjfkg

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3 years ago

the area of a pentagon increased by 27 is the same as four times the difference of area and 15. what is the area of the pentagon

AfilCa [17]

This can be written as:
a+27=4(15-a)
now to work it out
a+27=4(15-a)
a+27=60-4a
4a+27=60
4a=33
a=8.25

hope this helps :)

6 0

3 years ago

Subtract: 3 1⁄8 − 1 7⁄8 = ⁄8 (Write your answer as a mixed number.)\

Sergio039 [100]

The answer is 1 2/8
$3 \frac{1}{8} - 1 \frac{7}{8} = \frac{25}{8} - \frac{15}{8} = \frac{10}{8} = 1\frac{2}{8}$

good luck

7 0

4 years ago

Read 2 more answers

PLEASE HELP ASAP!!! I AM REALLY STUCK AND WILL AWARD BRAINLIEST!!!

Setler [38]

Answer:

Does not go

Step-by-step explanation:

$x = \frac{10}{3} \\ y = - 2$

$y = kx \\ - 2 = k( \frac{10}{3} ) \\ \\ k = \frac{ - 2 \times 3}{10} \\ \\ k = \frac{ - 1 \times 3}{5} \\ \\ k = - \frac{3}{5}$

So the equation is

$y = - \frac{ 3}{5} x$

M(-10, 15)

$x = - 10 \\ \\ y = - \frac{3}{5} x \\ \\ y = - \frac{3}{5} ( - 10) \\ \\ y = \frac{3}{5} (10) \\ \\ y = 3 (2) \\ \\ y = 6$

The graph Does not go through point M bcz when the value of x = - 10 then the value of y is 6, not 15

5 0

3 years ago

Given n = 875 and pˆ = 0.45, find the margin of error E that corresponds to a 95% confidence level.

sveticcg [70]

Answer:

The margin of error E that corresponds to a 95% confidence level is: $E=0.03297$

Step-by-step explanation:

The propocion is $p = 0.45$

The sample size $n = 875$

95% confidence level

Level of significance = 1-level of confidence

Level of significance = 1-0.95 = 0.05

The formula for the error is:

$E = Z_{\alpha/2}\sqrt{\frac{p(1-p)}{n}}$

The value for $Z_{0.05/2} =Z_{0.0250}= 1.96$ according to the normal table

So:

$E = 1.96\sqrt{\frac{0.45(1-0.45)}{875}}\\\\SE=0.03297$

4 0

3 years ago