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2 years ago

Can someone please help me with this

Mathematics

1 answer:

Tresset [83]2 years ago

6 0

Answer:

Step-by-step explanation:

Answered by Gauthmath

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I’m not sure which answer it is !??

Shkiper50 [21]

Answer:

Its A or B if not then sorry

Step-by-step explanation:

5 0

2 years ago

Somebody please help me Do any that you want you don’t have to do all.

Dmitrij [34]

Answer:

I don't see anything, but I can help you what is it about? If its science. I'm bad at science. If its math I can try to help you.

Step-by-step explanation:

6 0

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

Ugo [173]

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 :

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

Simplify,

$n=0.25\times2654.3104=663.5776\approx664$

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0

3 years ago

What is the value of g(f(-5))?

fredd [130]

Replace x in the equation for f(x) with -5:

|2x +9| = |2(-5) +9| = |-10 +9| = |-1| = 1

Now find x 1 and see where the graph of G(x) crosses the Y :

It crosses ay Y = 5

The answer is A. 5

8 0

2 years ago

TRIGONOMETERY REVIEW PLEASE HELP DUE TOMMOROW

Alisiya [41]

I’m pretty sure this is how you do these kinds of questions, but I may be entirely wrong, so don’t 100% trust me on this one

6 0

2 years ago