Howdy,
20% is also 1/5 in fraction form, which tells us he spent 1/5 of his money on clothes:
So to solve, we have to multiply 50 by 5:
50 x 5 = 250
Rocco's original savings was $250
Hope this helps! <span />
Answer:
150 lb
Step-by-step explanation:
138lb/23 gal = x/25 gal
cross multiply and solve for x
23x = 138·25
x = 3450/23
x = 150 lb
Pi/3 is in the first quadrant, and all trigonometric functions are positive in the first quadrant,
Therefore, cos pi/3 is positive.
Its D if you want to give it a shoot but im 75% sure is D hope you got it right. :)
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