3 years ago

Zena saves $5 for every $30 she earns. Which of these describes the rate at which Zena saves?

Mathematics

1 answer:

garri49 [273]3 years ago

6 0

Answer:

I think it is c because yah

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I will give BRAINIEST

Lilit [14]

I believe it’s c/100.
2=20
10 divided by 2 = 5.
Multiply 5 by 20. That equals 100.

4 0

2 years ago

How to didvie $50 in the ratio of 2:3

Rama09 [41]

50 divided 2/3

50 x 3/2 = 150/2

= 75

5 0

3 years ago

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Help please help please help please

marissa [1.9K]

Answer:

x=5

Step-by-step explanation:

I'm pretty sure it's x=5 because if you multiply that and the quadratic function it is -12 1/2 not 12 1/2 (hope this helps :)

8 0

3 years ago

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Midge added some chlorine to the water in a pool. The chlorine evaporated at a fixed rate every week. The table below shows the

wlad13 [49]

Answer:

f(n) = 16(0.5)ⁿ⁻¹

Step-by-step explanation:

Find f(1) for each option.

a) f(1) = 16(0.5)¹⁻¹ = 16

b) f(1) = 32(0.5)¹⁻¹ = 32

c) f(1) = 16(0.5)¹ = 8

d) f(1) = 32(0.5)¹⁺¹ = 8

Only the first option matches the table.

5 0

3 years ago

Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of a new toothpaste package. She plans to use

Allisa [31]

Answer: 323

Step-by-step explanation:

The formula to calculate the sample size for proportion is given by :_

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

Given : Significance level : $\alpha: 1-0.95=0.095$

Critical value : $z_{\alpha/2}=1.96$

Margin of error : $E=0.05$

The proportion of successes : $p=0.70$

Now, the required sample size will be :-

$n=0.70(0.30)(\dfrac{(1.96)}{0.05})^2=322.6944\approx323$

Hence, the minimum required sample size = 323

8 0

3 years ago