243, 729 each number is multiplied by 3 :)
Answer:
45x - 63 y + 36 z
Step-by-step explanation:
When I think of the distributive property, I imagine giving the outside term to everyone on the inside (multiplying).
9 (5x - 7y + 4z)
= 9 (5x) + 9 (-7y) + 9 (4z)
= 45x - 63 y + 36 z
Good luck with your math!
Factor because if we have
yz=0 then we can assume y and/or z=0
so factor
so the easiest way is to find what 2 numbers add to -6 and multiply to get 9 so
we know that they must be both - because we must have x+x=(-) and x^2=+ so therefor they must be negative
factors of 9=3 and 3 so
-3 and -3
-3+-3=-6 perfect
(z-3)(z-3)=0
set each to zero
z-3=0
add 3
z=3
z=3 is the answer
Answer:
He can run 12 miles in 132 minutes.
Step-by-step explanation:
2/22=x/132
simplify 2/22 into 1/11
1/11=x/132
cross product
11*x=1*132
11x=132
x=12
Answer:18
Step-by-step explanation:
same as other side 90 degrees
