Answer:
try 3x=30 or 10
Step-by-step explanation:
Answer:

Step-by-step explanation:

If you want a solution:
<em>subtract 5 from both sides</em>

<em>multiply both sides by 3</em>

Either a or b. C and d don’t make sense cuz there’s no way those lines are perpendicular
Answer:
B
Step-by-step explanation:
Distributive property is
a(b+c)=ab+ac
we can make it easier by splitting up 63 into 60+3
so
7(63)=7(60+3)=7*60+7*3=420+21=441