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10 months ago

Please help - Will give BRAINLIEST!!

Mathematics

1 answer:

Ivan10 months ago

6 0

Answer:

For the first one:

A' (-8,6)

B' (-9,10)

C' (-3,9)

D' (-2,5)

Step-by-step explanation:

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borishaifa [10]

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c^2= 32^2 +24^2

c^2= 1,024+576

c^2= 1600

c= $\sqrt{1600\\$ = 40

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What is the solution to the linear equation?<br><br> 4b + 6 = 2 – b + 4

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Answer:

$\large\boxed{b=0}$

Step-by-step explanation:

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pav-90 [236]

Answer:

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Step-by-step explanation:

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The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

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