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Alja [10]
3 years ago
15

How many of the scores from the group that studied in question eight are in one mean absolute deviation of the mean? Which score

s are within one mean absolute deviation of the mean. Studied: 87 100 94 79 92 100 95 83 89 99 100 91 89 95 100 93 96 83. Did not study: 82 72 45 91 58 83 65 87 90 77 73 89.
Mathematics
1 answer:
n200080 [17]3 years ago
4 0

Answer:

93

Step-by-step explanation:

<u><em>Add all of the numbers and divide them by the number of numbers there are.


</em></u><em>Hope this helped  ·ω·</em>

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The answer is -1152
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7 0
3 years ago
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Someone h e l p me on this it is geometry
ladessa [460]

BC = 6 km

<u>/</u><u> </u> ACB = 34°

AC = ?

cos 34° = \frac{BC}{AC}

=> 0.829 = \frac{6}{AC}

=> AC = \frac{6}{0.829}

=> AC = 7.23763570567

=> AC = 7 km

=> AC = 10 km\:\:\:\:\:\:\:\: (nearest tenth)

\\

<h3>Answer : 10 km</h3>

\\\\\\\\

HOPE IT HELPS

PLEASE MARK ME BRAINLIEST ☺️

7 0
3 years ago
I HAVE 5 MIN TO TURN THIS IN!!!! PLEASE HELP ME!!!<br> IT'S IN THE IMAGE BELOW
Mariulka [41]

Answer:

<h3>a.  x = 8 years</h3><h3>b.  52,000</h3><h3 />

Step-by-step explanation:

company A = 28,000 + 3,000 (x)

company B = 36,000 + 2,000 (x)

where x = no. of years.

  • <u>company A = company B</u>

28,000 + 3,000 (x) = 36,000 + 2000 (x)

3,000 (x) - 2,000 (x) = 36,000 - 28,000

1,000 (x) = 8,000

x = <u>8,000</u>

     1,000

<h3>x = 8 years</h3>

  • plugin value of x = 8 into company A and B

company A = 28,000 + 3,000 (8)

<h3>company A = 52,000</h3>

company B = 36,000 + 2,000 (8)

<h3>company B = 52,000</h3>
5 0
3 years ago
A ladder is leaning against a wall. The top of the ladder is 9 feet (ft) above the ground. If the bottom of the ladder is moved
Komok [63]

Step 1

<u>First situation</u>

when a ladder is leaning against a wall

Let

x-------> the distance of the bottom of the ladder from the wall

L-------> the length of the ladder

<u>Find the length of the ladder</u>

Applying the Pythagorean Theorem

L^{2} =x^{2}+ 9^{2} ------> equation 1

Step 2

<u>Second situation</u>

when the ladder will be lying flat on the ground

<u>Find the length of the ladder</u>

In this situation the length of the ladder is equal to

L=x+3

square both sides

L^{2}=(x+3)^{2} ------> equation 2

Step 3

equate equation 1 and equation 2

x^{2}+ 9^{2}=(x+3)^{2}\\x^{2}+81=x^{2} +6x+9\\ 6x=81-9\\6x=72\\x=12\ ft

therefore

<u>the answer is</u>

the length of the ladder is 12\ ft

see the attached figure to better understand the problem

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3 years ago
Hom many times can the customer drive around the track for $8
wlad13 [49]
...more information is clearly needed
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