Answer:
k = 3
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms on both sides.
(2x - 1)(kx + 1) ← expand using FOIL
= 2kx² + 2x - kx - 1
Compare the coefficients of the x² term on both sides
2k = 6 ( divide both sides by 2 )
k = 3
The amount of money the family still needs to save is $2236.
<h2>Linear system</h2>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
Given
Their vacation savings account currently has a balance of $2,764.
The family would like to have at least $5,000.
<h3>To find </h3>
The amount of money the family still needs to save.
<h3>How to find the amount of money the family still needs to save?</h3>
Forming the equation, we get
Let x be the amount needed to save. then
x + 2764 ≥ 5000
On simplifying, we get
x + 2764 ≥ 5000
x ≥ 5000 - 2764
x ≥ 2236
Thus, the amount of money the family still needs to save is $2236.
More about the linear system link is given below.
brainly.com/question/20379472
6x^2+7y^2-2x
The only two like terms were 3y^2 and 4y^2
What you can do is divided 96 by 8 and it will give you the answer
Total surface area = 2(62.4) + 3(72) = 340.8 cm²
Your friend did this : 2(62.4) + 72 = 196.80.
He did not multiply the 72 by 3 (Since there is 3 sides)