Answer:
Step-by-step explanation:
1. x+6=14
14-6=8
x=8
2. 15/x=3
15/3=x
x=5
3. 7*x=56
56/7=8
x=8
4. x^2-4=12
x=4, x=-4
5. 1/4x=10
x/4 = 10
x = 40
6. 3x-9=18
x=9
7. 1/2x-10=14
x/2-10=14
x=48
8.x/8=9
8*9=72
x=72
9.2x+3=24
2x=21
x=21/2
10.20*x=140
140/20=7
x=7
Answer:if A= [2 6] prove that (A')' = A
3 7
4 9
Step-by-step explanation:
Answer: Can you upload a picture of the question?
Step-by-step explanation:
Multiply the cost, 120, by 0.07
you will get 8.4
Janet will pay $8.40 in sales tax
He has 420 cards. if you have 30 packs and 14 in each just 30*14
