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4 years ago

I need help with number 6

Mathematics

1 answer:

Fofino [41]4 years ago

6 0

Writing it as a unit rate in this case is simply altering it to miles per hour so for 171 miles in 3 hours you divide 171 by 3 which equals 57 so the unit rate for this problem is 57mph.
Hope this helps.

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3 years ago

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At a store, notebooks are on sale for 78% off the regular price. The cost of a notebook

NARA [144]

Answer: C. n-0.78n

n−0.78n

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3 years ago

A square has a side length of 3 inches. What is the length of the diagonal distance across the square ?

astraxan [27]

Answer:

4.243

Step-by-step explanation:

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d = a√2

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3 years ago

Caleb mowed 18 lawns in 6 hours. What was his rate of mowing in lawns per hour? Express your answer in simplest form.

erik [133]

Answer:

Step-by-step explanation:

to find the distance you need to divide the lawns by how long it took.

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3 0

3 years ago

a nationwide study of american homeowners revealed that 65% own at least one lawn mower. a lawn equipment manufacturer, locate

svetoff [14.1K]

Answer:

$z=\frac{0.6841 -0.65}{\sqrt{\frac{0.65(1-0.65)}{497}}}=1.5938$

We have a right tailed test then the p value would be:

$p_v =P(z>1.5938)=0.0555$

Step-by-step explanation:

Information provided

n=497 represent the random sample of homes selected

X=340 represent the number of homes with one or more lawn

$\hat p=\frac{340}{497}=0.6841$ estimated proportion of homes with one or more lawn

$p_o=0.65$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value (variable of interest)

System of hypothesis

We want to check if proportion of homeowners owning lawn mowers in charlotte is higher than 65%m so then the correct hypothesis are .:

Null hypothesis: $p\leq 0.65$

Alternative hypothesis: $p > 0.65$

The statistic is given by:

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

Replacing the info given we got:

$z=\frac{0.6841 -0.65}{\sqrt{\frac{0.65(1-0.65)}{497}}}=1.5938$

We have a right tailed test then the p value would be:

$p_v =P(z>1.5938)=0.0555$

4 0

3 years ago