*PLEASE HELP* construction crew is pouring concrete to make a floor in a building. The weight, w, of the concrete is proportional to the volume of concrete, v, that has been poured. After pouring 5
cubic feet, they know the weight of the concrete is 740 pounds.
(a) If the construction crew uses a total of 12
cubic feet of concrete, set up and solve a
proportion for the amount the concrete
weighs, w.
(b) The crew wants to create an equation of
the form w=k. v to calculate the weight,
w. of the concrete based on its volume, v.
in cubic feet. What is the value of k in this
equation? Explain.

answer: the first graph

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.