Answer:
Step-by-step explanation:
Givens
r = 50
Formula
V = 4/3 pi r^3
Solution
V = 4/3 * 3.14 * 50^3
V = 4.19 * 50^3
V = 4.19 * 125000
V = 523750
2πr is the perimeter or circumference of a circle
.
diameter is 32cm so radius=16cm
2*3.14*16=100.48cm is long
2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
Answer:
the most he can send for his dad is 9 dollars
Step-by-step explanation:
Answer:
5
Step-by-step explanation: