teagan4christ
teagan4christ teagan4christ
  • 30-01-2017
  • Mathematics
contestada

Suppose P varies directly with d , and p=7 when d=3.
What is the value of d when p=28?

A. 140/3
B. 12
C. 16
D. 4/3

Relax

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 30-01-2017
p vaires directly with d means
p=kd
7=k3
divide by 3
7/3=k

28=(7/3)d
times 3/7 both sides
84/7=d
12=d

B
Answer Link

Otras preguntas

which hormone influences a person's rate of metabolism? a. PTH b. aldosterone c. thyroxine d. calcitonin
True or false? The Dead Sea is 6 times more salty than the ocean.
Foods rich in starch such as pasta and bread are often known by what word starting with the letter C?
Lures, reels, rods, hooks, baits and nets are common equipment used in what food gathering method?
What is a phenomenon characterized by poorly planned development on the edges of cities and towns.
True or false? Sound travels faster through water than air?
A right triangle has 23 mm, 20 mm, and 13 mm but is it a scalene, isosceles, or a equilateral?!?!
what is the difference 14/15 - 5/12 written as a decimal?
Insert ,,THE" where necessary. A)last year we visited.......canada and.........united states B)..........Africa is much larger than.........Europe c)we went to.
which expression are equivalent to 6m+18