Question

Given the literal equation ab/a+b = c , with b = –1 + a, what is the value of c if a = 5?

Answer 1

A-20/9
B-25/9
C-4
D-11

Answer 2

okay so you have
ab/a+b = c

b = -1 + a

so what a = 5...what is c?

(5(-1 + 5))/(5 + (-1 +5))

distribute that 5

5(4)/ 5 + 4

20 / 9


hang on let me re-check that

Answer 3

thx

Answer 4

Find x if y = –4.
3y-6/x=12

A.0
B.-1/4
C.6
D.–4

Answer 5

wait hang on.....was 20/9 the answer? the only answer choice I see was -20/9???

Answer 6

yea

Answer 7

20/9

Answer 8

Find x if y = –4.
3y-6/x=12

A. 0
B. -1/4
C. 6
D. –4

Answer 9

\[\frac{ 3y - 6 }{ x } = 12\]

or

\[3y -\frac{ 6 }{ x } = 12\]


which is it?

Answer 10

second one

Answer 11

or bottom one

Answer 12

okay

so you have that equation

you want to solve for x...and you know y = -4

3(-4) - (6/x) = 12
-12 - (6/x) = 12

add 12 to both sides here

Answer 13

ok hold on

Answer 14

-24

Answer 15

-12 - (6/x) = 12
+12 +12

what does the equation look like now?

Answer 16

6/x

Answer 17

-6/x = 24

now multiply both sides by -x

6 = -24x

divide both sides by -24

x = -6/24

simplify this

x = -1/4

Answer 18

thank u

Answer 19

no problem