The total weight of 15 boxes is 45 pounds. How much would 40 boxes weigh? *

120 pounds

Step-by-step explanation:

15 boxes = 45 pounds

45/15= 3

1 box= 3 pounds

40 x 3 = 120

40 boxes would weigh 120 pounds

hope this helps :)

120 lbs.

Explanation: One box weighs 3 pounds (divide 45 by 15). 3 times 40 equals 120. So the total weight is 120 pounds.

Plz mark brainliest:)

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0