Answer: 130.666
Step-by-step explanation:
78 gallons is the same as 312 quarts
Answer:
Total distance from Mr. West to dolphin 
Step-by-step explanation:
Height of cliff on which Mr. West is standing above the surface of ocean =
Mr. West spot the dolphin under the water at a depth of = 
∴ Total distance from Mr. West to dolphin=
Adding mixed numbers

Adding whole numbers first.

Adding fractions by taking LCD.

Answer:
(x+12) (x+2)
x(x+12)+2(x+12)
x^2+12x+2x+24
x^2+14x+24
Step-by-step explanation:
17. Area of triangle: 1/2bh
1/2 * 12 * 15
1/2 * 180
=90 cm^2
18. Area of trapezoid: 1/2 h (b1 + b2)
1/2 * 8 ( 12 + 15.4)
4 * 27.4
= 109.6 cm^2