Answer:
it is 2
Step-by-step explanation:
7 times 2= 14
19 times 2=38
the only like-terms are on the right-hand-side, since the left-hand-side has only 1 term anyway.

Answer:
4.802 x 10^7
Step-by-step explanation:
Move the decimal place one number in from the furthest to the right, which is the four. Then count how many digits there is to the right of it, that is your power of ten. The decimal will not come after only a zero. I don't know how well I can explain it but that is the right answer.
Answer:
(-1.68)(1) + (-1.68)(0.5)
Step-by-step explanation:
I just got it right on edgenuity!! Hope this helps!!
Answer: about 34.6
Step-by-step explanation: 11 is the radius, but you need the diameter which is 22. multiply 22 by pi and divide that number by 2 since it is half a circle.