Answer:
#1- z = 75
#2- t = 1.33
Step-by-step explanation:
<em>HOPE THIS HELPS!!! </em><em>:)</em>
8 - 7x^2 + 3 = 4x^2 - 1
8+3-7x^2 = 4x^2-1
11-7x^2 = 4x^2-1
B. Commutative property of addition
We can swap numbers and obtain the same results.
In this case, we swapped 8+3 and added them.
Question # 17 Solution
Answer:

Step-by-step Explanation:
The given expression

And we have to solve for x₁
So,
Lets solve for x₁.

Multiply both sides by x₂ - x₁




Divide both sides by -m


Therefore, 
Question # 23 Solution
Answer:

Step-by-step Explanation:
The given expression

And we have to solve for n
So,
Let's solve for n.

Multiply both sides by b.

Factor out n.

Divide both sides by -b + x.


Therefore, 
<em>Keywords: solution, equation</em>
<em>Learn more about the solution of equations from brainly.com/question/12864981</em>
<em>#learnwithBrainly</em>
Answer:
its B,C,and E
Step-by-step explanation: