Step One: Rewrite 20 as a fraction, which gives you 20/1.
Step Two: Set-up the expression as (3/4)(20/1).
Step Three: Multiply the numerators by each other, and multiply the denominators by each other.
Step Four: Simplify 60/4 by simply dividing 60 by 4. Your final answer is 15.
Answer:
(a) 13536.10J
(b) 27072.20J
Step-by-step explanation:
(a) Height of tank (h) = 4 feet = 4/3.2808 = 1.22m
Volume of water in full tank = 4ft×5ft×4ft = 80ft^3
Volume of water in half tank = 1/2 × 80ft^3 = 40ft^3
Density of water = 62.4lb/ft^3
Mass of water = density × volume = 62.4 × 40 = 2496lb = 2496×0.45359kg = 1132.16kg
Work done to empty half of the tank = mgh = 1132.16×9.8×1.22 = 13536.10J
(b) Work done to empty all of the tank = 2 × work done to empty half of the tank= 2 × 13536.10J = 27072.20J
4y=10x
y= quarters x= dimes
4 (25) = 100 10 (10)= 100
It’s correct. i like your handwriting btw, it’s really pretty
2x^2+10x-3x-15= 2x^2+7x-15