Answer:
see explanation
Step-by-step explanation:
Given that M is directly proportional to r³ then the equation relating them is
M = kr³ ← k is the constant of proportion
To find k use the condition when r = 4, M = 160, thus
160 = k × 4³ = 64k ( divide both sides by 64 )
2.5 = k
M = 2.5r³ ← equation of variation
(a)
When r = 2, then
M = 2.5 × 2³ = 2.5 × 8 = 20
(b)
When M = 540, then
540 = 2.5r³ ( divide both sides by 2.5 )_
216 = r³ ( take the cube root of both sides )
r =
= 6
Answer:
0.125
Step-by-step explanation:
I calculated 2 divided by 16, and got 0.125.
1/6* 1/6. Multiply the top number and the bottom numbers and you have 1/36.
Answer:
7.33 mps
Step-by-step explanation:
1'st step: divide 132m divided by 18s= 7.33 mps
Original price 640.64
saved: 68.64