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3 years ago

If m = 35 cm and n = 37 cm, what is the length of l?

Mathematics

2 answers:

nalin [4]3 years ago

8 0

36 hope it's right!!!

ElenaW [278]3 years ago

6 0

Minus m-n = 36 so 36 is your answer.

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Calculate the power in kilowats required to lift a 500 kg mass 12 meters in one second

Anon25 [30]

I think that the answer is 58,800 watts

5 0

3 years ago

a recipe for cookies calls for 10 1/6 cups of sugar. krystal has already put in 4 2/3 cups. how many more cups does she need to

DENIUS [597]

Answer:

5 1/2 cups

Step-by-step explanation:

10 1/6 = $\frac{61}{6} cups$

10 x 6 + 1

$\frac{61}{6}$

4 2/3 = $\frac{14}{3} cups$

4 x 3 + 2

$\frac{14}{3}$

Find a common denominator (6)

$\frac{14}{3} = \frac{28}{6}$

$\frac{14}{3}$ · 2 = $\frac{28}{6}$

$\frac{61}{6} - \frac{28}{6} = \frac{33}{6}$

$\frac{33}{6}$ or 5 1/2 cups

6 0

3 years ago

Jack bought 4 dozen eggs at $10 per dozen. 6 were broken. what percent of his money goes to waste

nevsk [136]

he paid = 4*10 = $40

48 eggs = $40

so, waste money would be 6/48 * 100 = 12.5%

3 0

3 years ago

Read 2 more answers

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

2 years ago

What ordered pair is a solution to y = x + 5 and x - 5y = -9?<br> I also need to show the work.

Margarita [4]

Answer:

(- 4, 1 )

Step-by-step explanation:

Given the 2 equations

y = x + 5 → (1)

x - 5y = - 9 → (2)

Substitute y = x + 5 into (2)

x - 5(x + 5) = - 9 ← distribute and simplify left side

x - 5x - 25 = - 9

- 4x - 25 = - 9 ( add 25 to both sides )

- 4x = 16 ( divide both sides by - 4 )

x = - 4

Substitute x = - 4 into either of the 2 equations and evaluate for y

Substituting into (1)

y = - 4 + 5 = 1

Solution is (- 4, 1 )

3 0

3 years ago