Answer:
B. 1.-1,-2
Step-by-step explanation:
Substitute g(x)=0
Move the expression to the left
Factor out -x^2 from the expression
Factor out (x+2) from the expression
When the product of the factor equals 0, at least one factor is 0
Solve for x
Answer: D) Not possible to solve
couse we don't know the meaning of 2x + 4y + 10z
Answer:
8000 (c)
Step-by-step explanation:
20x20x20=8000
The plans cost the same at 125 miles. the cost is $63.50
Let x = the width
then
2x = the length
:
The box dimensions: 2x by x by 4
Given the surface area:
2(2x*x) + 2(2x*4) + 2(x*4) = 220
:
4x^2 + 16x + 8x = 220
A quadratic equation:
4x^2 + 24x - 220 = 0
simplify, divide by 4
x^2 + 6x - 55 = 0
Factor
(x+11)(x-5) = 0
The positive solution is what we want here:
x = 5 ft is the width
then
2(5) = 10 ft is the length
:
Find the volume
10 * 5 * 4 = 200 cu/ft is the volume
