21-02-2017
Mathematics

contestada

Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours?

Respuesta :

wolf1728 wolf1728

21-02-2017

If it doubles every 4 hours, in 12 hours you will have 3 doublings.
2 * 2 * 2 = 8
90*8 = 720 pounds of algae

Answer Link

Otras preguntas

if sin (α+β) = 1, sin (α-β) = 1/2 then tan (α+2β) tan(2α+β) = a. 1 b.-1 c.0 d. none

Sienna has 80 yards of fencing to enclose a rectangular area. Find the dimensions that maximize the enclosed area. What is the maximum area?

The perimeter of a square garden is to be at least 22 feet but not more than 36 feet. Find all possible values for the length of its sides.

Factor the expression.2x2 + x - 15

Solve for x : 2x^2+4x-16=0

How do you simplify (9x^8 y^3)^1/2

solve for y: 3/4(5x-y)<3

John is twice as old as her sister Jane. Four years ago, John was three times as old. What is John’s current age?

a car travels 172 miles using 7 gallons of gas how far can the car travel using 42 gallons of gas?

9 students volunteer for a committee. How many different 6-person committees can be chosen?a. 1 b. 362,880 c. 60,480 d. 84