Answer:
z = 0 ; 1
Step-by-step explanation:
3 + 8 = 11 < 12
so z must be either 1 or 0
Answer:
42 square yards
Step-by-step explanation:
T.S.A of cube

where l = 7yd

thus, the surface area of cube is 42 square yards
<em>Greetings from Brasil...</em>
from notable products:
A² - B² = (A + B)·(A - B)
bringing to our problem:
9 - G² = (3 + G)·(3 - G)
Factoring 24G + 8G²:
8G(3 + G)
So, we have:
{G²/[ (3 + G)·(3 - G)]} + {(14 + G)/[8G(3 + G)]}
So the least common denominator is: 3 + G

2x=5y
x-y=111
x=111+y
so 2x=5y is
2(111+y)=5y
222+2y=5y
2y-5y=-222
-3y=-222 (divide by -3 both sides of the equation)
y=-222/(-3)= 74
x=111+y = 111 +74 = 185
so the first number is 185 and the second is 74