3 years ago

-12=3k+9 solve for given variable

Mathematics

1 answer:

Lena [83]3 years ago

6 0

-12=3k+9

move +9 to the other side

sign changes from +9 to -9.

-12-9= 3k+9-9

-12-9= 3k

-21= 3k

divide by 3

-21/3= 3k/3

k= -7

Answer: k= -7

You might be interested in

What is the answer for 3 divided by blank equals 36

Nat2105 [25]

The answer is 12, 3 times 12 is 36

4 0

3 years ago

Which expression are equivalent to the one below? check all that apply. 3^x

pickupchik [31]

$B.\ 3\cdot3^{x-1}=3^{1+x-1}=3^x\ \ /\text{used:}\ a^n\cdot a^m=a^{n+m}/\\\\F.\ \left(\dfrac{18}{6}\right)^x=3^x$

7 0

3 years ago

A carpenter cut a 13 1/2 foot piece of wood into 3/4 foot pieces. After cutting the wood, how many pieces did the carpenter have

avanturin [10]

Answer:

Step-by-step explanation:

Turn the mixed number into an improper fractions: 13 × 2 = 26, 26 + 1 = 27
Re-write improper fraction: $\frac{27}{2}$
$\frac{27}{2}$ ÷ $\frac{3}{4}$ = $\frac{27}{2}$ × $\frac{4}{3}$
$\frac{27}{2}$ × $\frac{4}{3} = \frac{108}{6}$
108/6 = 18

I hope this helps!

4 0

3 years ago

(-5b2 – 8b) -(-9b3– 5b2 – 8b)

Dafna11 [192]

Answer:

9b³

Step-by-step explanation:

-5b²-8b+9b³+5b²+8b

9b³

7 0

4 years ago

WILL MARK BRAINLIEST FOR BOTH QUESTIONS AND DOUBLE POINTS INLY HAVE 6 MINUTES

Brut [27]

Answer:

Where is the table for the first question?

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers