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2 years ago

What would be the third step in simplifying the expression 3 + (9 - 5) 2 ÷ 8? subtraction addition exponent division

Mathematics

1 answer:

mash [69]2 years ago

5 0

PEMDAS

Step-by-step explanation:

division is the third step Divide 2 by 8

P: Parenthesis

E: Exponents

M:Multiplication

D:Division

A: Addition

S:Subtraction

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Ahat [919]

Answer:

$2250

Step-by-step explanation:

First, find how much more Jayden will get each month by doing 2.5% of 5000, or multiplying 0.025 * 5000 = $125 per month.

Then, since Jayden is leaving it there for 18 months, you can do 125 * 18 = 2250.

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2 years ago

How to do break even analysis

Ksenya-84 [330]

Answer:

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2 years ago

A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca

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Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

$n=0.25(\dfrac{z*}{E})^2$

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = $z*=2.576$ [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

$n=0.25(\dfrac{2.576}{0.05})^2$

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Thus, the required sample size= 664

Hence, the correct answer is A. 664.

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1 year ago

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1 year ago