Question

will medal

Answer 1

What is the value of the expression |a + b| + |c| when a = –3, b = 7, and c = –15?

A.
5

B.
–11

C.
25

D.
19

Answer 2

@texaschic101

Answer 3

@the_ocean_girl

Answer 4

|| means the distance from zero, which means the number itself except absolute value is always positive, so add a and b, then if that's negative just make it positive and add it to the distance between c and 0 and add
does that make sense?

Answer 5

l-3 + 7l + l-15l

Answer 6

absolute values are positive.....so first, what is -3 + 7 ??

Answer 7

10

Answer 8

-3 + 7 = 4

so now we have :
| 4 | + | -15 |......so the absolute value of 4 is 4.....and the absolute value of -15 is 15 (because absolute values are positive even when they say negative. So now your problem just becomes : 4 + 15 = ?? .....any guesses now ?

Answer 9

i think it is b

Answer 10

no.....what is 4 + 15 ? that is your answer

Answer 11

19

Answer 12

do you see how we got : | 4 | + | -15 | ??
even when the absolute value says -15....it is still positive because absolute values are positive. So the problem becomes 4 + 15 ....and that is equal to 19.
any questions ?

Answer 13

ye sthanks

Answer 14

you cannot treat absolute value signs the same as parenthesis.
Glad to help :)