Question

evaluate each expression for u = -5 and v = 2.

11 - 3v - u
2u - 8 + 3v
7v - u + 4


HELP!

Answer 1

same problem as before: replace the letters with the numbers and do the arithmetic

remember that -3v is short for -3 * v (-3 times v)

Answer 2

mhm

Answer 3

and be careful of minus signs
- u with u = -5 means - (-5) and 2 minus signs make a plus
-(-5) is +5

Answer 4

11 - 3v - u

the first step is replace v with 2 and u with -5. can you re-write this with the numbers in place of the letters ?

Answer 5

don't do anything except rewrite with the numbers.

Answer 6

ok

Answer 7

can you post what you did for the first problem ?

Answer 8

sure........ for 11-3v-u i just took out 3v and replaced it with -5 and 2

Answer 9

is that good.?

Answer 10

do it like this
11 - 3*v -u
replace the v with 2
11 -3 * 2 - u
replace the u with -5
11 -3 * 2 - (-5)

now you need to remember your order of operations
can you simplify this?

Answer 11

i think so, let me get my mind to do it... lol, i might be a bit... hold up

Answer 12

23?

Answer 13

You have to solve using PEMDAS, do you know PEMDAS?