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2 years ago

24 N of force is applied to stop a 12 kg bowling ball. What is the acceleration on the ball?

Mathematics

1 answer:

Nimfa-mama [501]2 years ago

3 0

Answer:

2 m/s^2

Step-by-step explanation:

f=ma

24 N = 12 kg * a

a = 2 m/s^2

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Step-by-step explanation:

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oksano4ka [1.4K]

Answer:

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Step-by-step explanation:

Exponent properties!

x^4*x^9 for example,

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3 years ago

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2 years ago

Pete is a politician. He claims that 32% of the households in his district have total household incomes below the poverty level.

victus00 [196]

Answer:

$z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145$

For a bilateral test the p value would be:

$p_v =2*P(z>2.145)=0.0320$

Step-by-step explanation:

Information given

n=225 represent the sample selected

X=87 represent the households with incomes below the poverty level

$\hat p=\frac{87}{225}=0.3867$ estimated proportion of households with incomes below the poverty level

$p_o=0.32$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to check if the true proportion is equal to 0.32 or not.:

Null hypothesis: $p=0.32$

Alternative hypothesis: $p \neq 0.32$

The statistic is given bY:

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

Replacing we got:

$z=\frac{0.3867 -0.32}{\sqrt{\frac{0.32(1-0.32)}{225}}}=2.145$

For a bilateral test the p value would be:

$p_v =2*P(z>2.145)=0.0320$

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Answer:

Step-by-step explanation:

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