3 years ago

Helppp!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

gladu [14]3 years ago

8 0

Answer:

I solved it and my answer is - 3

Leno4ka [110]3 years ago

5 0

Answer:x=-3

Step-by-step explanation:

Simplify the top 3x-15/2 = 3(x-5)/2

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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.

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4 years ago

Solve the system of equations 9x + 2y = 11 and 9x + y = 1 by combining the equations

Dennis_Churaev [7]

The answer to the question

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3 years ago

Find the sum of 2.2+(-3.7)

Ghella [55]

-1.5 is ur answer. You know that the answer will be negative because the number with the larger digits is negative.

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3 years ago

684 = A 600 + 80 + 40 B 40 + 600 + 8 6 + 80 + 400 D 600 + 80 + 4

borishaifa [10]

Answer:

The answer is d. Hope this helps :D

Please mark brainliest!

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3 years ago

Read 2 more answers

Given the following series: ne-3n n=1 (a) Approximate the sum of the given series by using the first 5 terms (a) (b) Estimate th

Pavlova-9 [17]

Answer:

a) 0.055140908

b) 0000000975

c) 1 / $e^{3}$ < 1 ( series is converges)

d) n=6

Step-by-step explanation:

Find the attachment for step by step explanation

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3 years ago