Answer:
(4 - a)^2 = 16-8a + a^2
(3x − 1)^2 = 9x^2−6x+1
Step-by-step explanation:
Multiply the left for each equation and they are the same.
Answer:
(a) $1.48
(b) $0.0051 . . . . slightly more than 1/2¢
Step-by-step explanation:
cost = (kW)(hours)(cost/kWh)
(a) cost = (0.040 kW)(24 h/da)(14 da/wk)($0.11/kWh) ≈ $1.478
The cost of leaving the porch light on is about $1.48.
__
(b) cost = (0.925 kW)(3 min)/(60 min/h)($0.11/kWh) ≈ $0.00509
The cost of toasting bread is about 0.5 cents.
Answer:
7.89 dollars
Step-by-step explanation:
The unit price would be the price of one pair of gloves.
So divide the total cost by the number of pairs bought.
23.67/3= 7.89
The answer is D. 36pi units^3
Hope this helps!
The formula for cylinder volume is: pi*r^2*h
Answer:
57 square inches
Step-by-step explanation:
First consider that a 45 degree sector of a circle is 45/360 of the area of the full circle from which it is cut. This comes out to 1/8 of the full circle area.
The area of a circle of radius 12" is A = π(12 ")^2, or A = 144π.
The area of the sector in question is 1/8 of that, or
A = (1/8)(144π), or A = 18π square inches, or approximately 57 square inches.