3a + 6b = 45
2a - 2b = -12....multiply by 3
----------------
3a + 6b = 45
6a - 6b = - 36 ...(result of multiplying by 3)
---------------add
9a = 9
a = 1
3a + 6b = 45
3(1) + 6b = 45
3 + 6b = 45
6b = 45 - 3
6b = 42
b = 7
solution is : (1,7)
Anything multiplied by zero is zero
A. 6-4=2 YES
12 + 12 = 14 NO
B. 5-3=2 YES
10+9 = 14 NO
C. 3-1 = 2 YES
6+3 = 14 NO
D. 4-2= 2 YES
8+6 = 14 YES
THE ANSWER IS D
Answer:
6303
Step-by-step explanation:
Answer:
87.407
Step-by-step explanation:
circumference = 2*pie*r
= 2*pie*17
=106.8/2
=53.4
53.4+(17*2)
=87.4
