Answer:
x = 7/9
Step-by-step explanation:
Answer:
23.8
Step-by-step explanation:
V = 4/3 π r³
V = 4/3 π (15)³
V = 4500 π
V = 4/3 π r³
4500 π / 2 = 4/3 π r³
1687.5 = r³
r ≈ 11.9
d ≈ 23.8
When using both negative symbols, and then multiplying them, this would mean that the numbers would be going up.
A negative (x's) a negative equals a positive.
Your answer: positive.
Answer:
x = 3
y = 4
Step-by-step explanation:
-4x+2y=-4 -----(eq1)
4x-5y=-8 ------(eq 2)
by elimination,
(eq1) + (eq 2),
(-4x+2y) + (4x-5y) = -4 + (-8)
-4x+2y + 4x-5y = -4 -8
2y-5y = -12
-3y = -12 (divide both sides by -3)
y = -12 / (-3) = 12/3 = 4 (sub back into (eq 1) )
-4x+2y=-4 -----(eq1), when y = 4,
-4x+2(4)=-4
-4x+8 = -4 (subtract 8 from both sides)
-4x= -4 - 8
-4x= -12 (divide both sides by -4)
x = -12 / (-4) = 3
