Question

If a + b = 9 and b = 3, then 4a =

Answer 1

plug in 3 instead of b, into `a+b=9`
solve for a.
multiply the result times 4, to get the value of `4a`

Answer 2

which number i should multiply?

Answer 3

can you do step 1? what do you get after you do step 1 ?

Answer 4

i really mixed it up im sory i need help!

Answer 5

\(\Large\color{blue}{ a + b = 9 }\)
you are given that \(\Large\color{blue}{ b = 3 }\)
So,
••••

\(\Large\color{blue}{ a + b = 9 }\)
\(\Large\color{blue}{ a + \color{red}{ 3 } = 9 }\) (plugged in 3 for x)
\(\Large\color{blue}{ a + 3 = 9 }\)
\(\Large\color{blue}{ a + 3 \color{red}{ - 3 } = 9 \color{red}{ -3 } }\)
\(\Large\color{blue}{ a = 6}\)

Answer 6

So if `a` is 6, then 4a= ?

Answer 7

a=24

Answer 8

thanks

Answer 9

4a = 24*

Answer 10

yap correct

Answer 11

yes, correct @JRDetroit 4a=24 :)

Answer 12

how long you will be online?

Answer 13

If f(x) = 3x3 – 3x, then f(2) equals?

Answer 14

anyone can solve this?

Answer 15

Sir/Ma'am, A Warm Welcome To Open Study.