Answer:
Yes, it is a solution
Step-by-step explanation:
9x+7y=-11
-2x-5y=30
substitute 5 for x and -8 for y and test:
9(5)+7(-8)=-11
45-56=-11 , this is true
-2(5)-5(-8)=30
-10+40=30 , this is true also
Answer:
A
Step-by-step explanation:
Sum of <span>complementary angles = 90
lets x = </span><span>measure of angle B
</span><A = x + 18
so
x + x + 18 = 90
2x = 72
x = 36
36 + 18 = 54
answer
<A = 54
<B = 36
Step-by-step explanation:
the number of times a number is multiplied to itself