Answer:
The answer is 11
Step-by-step explanation:
Answer:
7a(3-a)
Step-by-step explanation:
21a-7a²
there GCF is 7
and has the same variable a
=7a(3-a)
X=13, Subtract 9, And add 6 and 19 To both sides. then Divide by three
Answer:
mph
Step-by-step explanation:
hello,
it travels
miles in 2.5 hours
So in 1 hours it travels

miles
hope this helps
<h2>
Greetings!</h2>
Answer:
x = 10
Step-by-step explanation:
First, we need to isolate all the x's on one side. To do this we need to move the -20 over to the other side making it a +20:
3.5x + 1/2x = 40 + 20 - 2x
Add the x's and the 40 and 20:
4x = 60 - 2x
Move the -2x over to the other side making it a +2x:
4x + 2x = 60
6x = 60
Divide both sides by 6:
x = 10
So x = 10
<h2>Hope this helps!</h2>