All categories

3 years ago

5. Solve. 2 Questions only 86 points c) 9.3 = 3n d) 2n - 2.5 = 5.5

Mathematics

1 answer:

lubasha [3.4K]3 years ago

5 0

Answer:

what that person said

Step-by-step explanation:

You might be interested in

What is the area of the following circle?

AnnZ [28]

The answer is 16 pi or about 50.27

4 0

4 years ago

9. What is the inverse of y = 10x -2?

Citrus2011 [14]

Answer:

f(x)^-1=x-2/10

Step-by-step explanation:

8 0

3 years ago

Brainlyist for the right answer

muminat

Answer:

A and C are the correct answers

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

nexus9112 [7]

Answer:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

$p_v =2*P(z$

8 0

3 years ago

Geometry question shown above.

Colt1911 [192]

I believe the answer is C, 68.

Angles A and R are supplementary so:
180=x+124
Angle A=56

AFD is an isosceles triangle so angles A and D are both 56. Then you can use these to solve for angle AFD.
180 = x+56+56
x=68

5 0

4 years ago