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1 year ago

Please help. Trying to find the missing measure. Explanations needed

Mathematics

1 answer:

andrew-mc [135]1 year ago

8 0

Answer:

l=5.1in

r=2.4in

Step-by-step explanation:

size increase of 50% so just add (+50%) to both existing values

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Jason and Jill or two students in mr. White's math class. On the last 5 quizzes Jason scored an 80 90 95 85 and 70. Jill scored

Mrac [35]

Jason's scores : 80 90 95 85 70 and

Jill's score : 70 75 90 100 95.

Mean of Jason's scores = $\frac{80 + 90 + 95 + 85 + 70}{5}=\frac{420}{5}=84.$

Mean of Jill's scores = $\frac{70+75+90+100+95}{5}=\frac{430}{5}=86$

Now, in order to find the mean absolute deviation, need to find the difference of each score from means.

Mean absolute deviation for Jason's scores.

|84-80| = 4

|84-90| = 6

|84-95| = 9

|84-85| = 1

|84-70|= 14

$\frac{4+6+9+1+14}{5}=\frac{34}{5}=6.8$

Mean absolute deviation for Jill's scores

|86-70| = 16

|86-75| = 11

|86-90| = 4

|86-100| = 14

|86-95|= 9

$\frac{16+11+4+14+9}{5}=\frac{54}{5}=10.8$

Jill got average quiz score 86 and Jason got 84.

Therefore, Jill got better quiz average.

Also, the mean absolute deviation for Jason scores is less that is 6.8 than 10.8.

Therefore, Jason got more consistent grades.

8 0

2 years ago

PLZ HURRY IT'S URGENT!!!!!

Salsk061 [2.6K]

Answer:

The correct answer is D) 13%

Step-by-step explanation:

To turn a decimal into a percentage, we simply multiply by 100.

0.13 * 100 = 13%

6 0

2 years ago

Write two subtraction equations to show how to find 15 - 7

alex41 [277]

These are the two equation

10-2
13-5

3 0

2 years ago

A=L times W

Dovator [93]

A= 30ft, because you only have to multiply LxW= A that is equal to 2x15=30ft

8 0

2 years ago

A pair of vertical angles has measures (3x+4)° and (7x-9)° What is the value of x?

Andrei [34K]

Since they are vertical they are equal to each other.

3x + 4 = 7x - 9
4 = 4x - 9
13 = 4x
3.25 = x

So the value of x is 3.25.

Hope this helps :)

5 0

2 years ago