$\dfrac{30+9x-42}{2}=x+15\qquad\text{multiply both sides by 2}\\\\9x-12=2x+30\qquad\text{add 12 to both sides}\\\\9x=2x+42\qquad\text{subtract 2x from both sides}\\\\7x=42\qquad\text{divide both sides by 7}\\\\\boxed{x=6}$

<h3>Answer: A. 6</h3>

3 0

3 years ago

There are 12 third-grade students and 15 fourth-grade students in the band.

ohaa [14]

Answer:

12+15=27 total students, each car can seat 4, so 27/4=6.75, you would round up to 7 bc you can't have 3/4ths of a car

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find the oth term of the geometric sequence 9, -27, 81, ...

Novosadov [1.4K]

It would b 9 x (-3^(x-1))

6 0

3 years ago

How do I find the value of y in y=mx+c

Fofino [41]

Plug in your coefficients

3 0

3 years ago