312 greeting cards in 24-card boxes require 13 boxes.
312/24=13
<span>v = 4/3*pi*r^3
derivating both sides with respect to t
dv/dt = 4*pi*r^2*dr/dt
when d = 1.7, r = 0.85, and dv/dt = 2:
2 = 4*pi*(0.85)^2*dr/dt
thus
dr/dt = 1/(2pi*(0.85)^2)
=1/(2*3.14*0.85^2)
=0.22</span><span />
I’m confused, can you explain
Answer:
A: Right
B: Acute
C: Obtuse
D: Acute
Step-by-step explanation:
A: Right
(90 degrees)
B: Acute
(less than 90)
C: Obtuse
(over 90 degrees)
D: Acute
(less than 90)
its 7 because 7*7=49 and 49*7=343
so the cube root of 343 would be 7
