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3 years ago

What number is half way between 6 and 24

Mathematics

2 answers:

vredina [299]3 years ago

6 0

Hello;)
First, x+y/2
6+24/2=15

The answer is 15.
Hope this helps u ;)

Norma-Jean [14]3 years ago

3 0

The number that is halfway between to others is their average value, that is, their sum divided by 2.
(6 +24)/2 = 30/2 = 15

15 is halfway between 6 and 24.

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What's (2x) ^3 in expanded notation form?

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Answer:

Step-by-step explanation:

${(2x)}^{3}$

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9/11 - 1/2 in it's simplest form

Murrr4er [49]

Answer:

7/22

Step-by-step explanation:

Step 1: Define/explain.

To subtract fractions with different denominators, you must first find the least common denominator (LCM).

You can do this by listing the multiples of each denominator.

Step 2: Solve.

11: 11, 22, 33, 44, 55, 66, 77, 88, 99, 110

2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22

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Now, we change the fractions to where they both have denominators of 22.

**REMEMBER: WHICHEVER NUMBER YOU MULTIPLY THE DENOMINATOR BY, YOU MULTIPLY IT BY THE NUMERATOR AS WELL!!**

$9/11*2/2=18/22$

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$18/22-11/22=7/22$

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Therefore, 9/11 - 1/2 = 7/22.

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3 years ago

If there is 12 inches in a foot how many inches are in 7 feet

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In a survey, 28 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped

Rina8888 [55]

Answer:

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Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution should be used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 28 - 1 = 27

80% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 27 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.8}{2} = 0.9$ . So we have T = 1.314

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 1.314\frac{2.6}{\sqrt{28}} = 0.646$

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