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3 years ago

What is the midpoint of the vertical line segment graphed below? (2,4) (2,-9)

Mathematics

2 answers:

anzhelika [568]3 years ago

7 0

Answer is A

Midpoint

$\frac{x \: a xis}{2} . \frac{y \: axis}{2}$

$\frac{2 + 2}{2} . \frac{4 + ( - 9)}{2}$

$(2. - 2.5 )$

ruslelena [56]3 years ago

4 0

You can use the formula x2-x1 over y2-y1

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Ribbon is sold by the foot. If Heather is making 84 bows, how many feet of ribbon must she buy?

Anuta_ua [19.1K]

Answer:

84 feet of ribbon is needed

Step-by-step explanation:

Given : Ribbon is sold by the foot. If Heather is making 84 bows, how many feet of ribbon must she buy?

Explanation : If ribbon is sold by the foot, then if Heather is making 84 bows, then Heather would need 84 feet

To put in simple terms - 1 bow needs 1 foot of ribbon

7 0

3 years ago

Line L pases through Sand R. Determine the slope of L.

mart [117]

Answer:

hi you answer should be 5/3

Step-by-step explanation:

Hope this helps!

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2 years ago

If cade shoots 275 free throw baskets in 2 hours, how many can he shoot in 5 hours

Volgvan

Hey there! :D

Find the unit rate.

275/2= 137.5

Cade shoots 137.5 free throws per hour. Multiply that by 5 for 5 hours.

5*137.5= 687.5

He can shoot 687.5 free throws in one hour. You could just round that to 688.

I hope this helps!
~kaikers

6 0

3 years ago

Read 2 more answers

A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic

Ket [755]

Answer:

$t=\frac{5.25-4.73}{\frac{3.98}{\sqrt{54}}}=0.9601$

P-value

First we find the degrees of freedom given by:

$df = n-1= 54-1=53$

Since is a two-sided test the p value would be:

$p_v =2*P(t_{53}>0.9601)=0.3414$

Step-by-step explanation:

Data given and notation

$\bar X=5.25$ represent the sample mean

$s=3.98$ represent the sample standard deviation

$n=54$ sample size

$\mu_o =4.73$ represent the value that we want to test

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

z would represent the statistic (variable of interest)

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

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean differs from 4.73, the system of hypothesis would be:

Null hypothesis: $\mu =4.73$

Alternative hypothesis: $\mu \neq 4.73$

Since we know don't the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

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

$t=\frac{5.25-4.73}{\frac{3.98}{\sqrt{54}}}=0.9601$

P-value

First we find the degrees of freedom given by:

$df = n-1= 54-1=53$

Since is a two-sided test the p value would be:

$p_v =2*P(t_{53}>0.9601)=0.3414$

7 0

3 years ago

Dale had equal amounts of orange juice, milk, and water that he left in the refrigerator overnight. He took them all out and let

Evgen [1.6K]

Answer:

answer is A

Step-by-step explanation:

All of these liquids were the same temperature when Dale took them out of the refrigerator. They all spent the same amount of time sitting on the counter, but at the end of that time, each one was a different temperature. This means that different liquids change temperatures at different rates.

7 0

3 years ago