Question

What is the value of the expression |x + y| when x = -7 and y = 18?

A. -25

B. -11

C. 11

D. 25

What is the mean of the set of numbers? -10, -5, 2, 6, 17

What is 451.538 rounded to the tenths place?


Which of the following lists all the integer solutions of the inequality |x| < 5?

4, -4

0, 1, 2, 3, 4

- 4, -3, -2, -1, 0, 1, 2, 3, 4

- 5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

Answer 1

|x + y| --- x = -7 and y = 18
| -7 + 18|
| 11 |
answer is 11 because absolute values are positive

the mean is the average, so we must add them...
-10 + (-5) + 2 + 6 + 17 = -10 - 5 + 2 + 6 + 17 = -15 + 25 = 10
then we divide by 5 (because there are 5 numbers) 10/5 = 2 (the mean)

451.438 = 451.4

the solution would be x < 5 and x > -5
answer is : last answer choice

Answer 2

|x+y|
plug in
|-7+18|
Whatever value you get make it positive

mean = sum of all values / sum of number of values
\[\frac{ -10 + -5 + 2 + 6 + 17 }{ 5 }\]

451.538
5 is the tenths place
So look one to the right of 5 and determine if that is {0...4} to keep as 5 or {5...9} to round up to 6.

|a| < b
splits into
a < b and a > -b
which combine into
-b < a < b
Do it with your problem. Fill in all the integers that work.

Answer 3

@kelliegirl33 wouldn't the last one be c because 5 isn't < 5 ? :o

Answer 4

your right...I missed that. It is C because there is no equal sign in the problem to include -5 and 5. I am sorry about that. Good catch :)

Answer 5

OK thank you so much!!!

Answer 6

YW :)

Answer 7

Np :}