M + f = 15....multiply by -5
3m + 5f = 51
-----------------
-5m - 5f = - 75 (result of multiplying by -5)
3m + 5f = 51
----------------add
-2m = - 24
m = -24/-2
m = 12 <=== 12 multiple choice questions
<h3>
Answer: 78 degrees</h3>
This is because alternate exterior angles are congruent when we have parallel lines like this.
Angle 2 and angle 8 are both outside the parallel lines, so that's what makes them exterior angles. Also, they are on alternating sides of the transversal line (angle 2 on the left, angle 8 on the right). So that's where the "alternating" comes from. The other pair of alternate exterior angles is angle 1 and angle 7.
A. p = 8n - 30
Each item n is $8.
Expenses totaling $30 are subtracted.
So if the profit (p) is $170.00,
170 = 8n - 30
Now you need to solve.
Add 30 to both sides.
200 = 8n
Divide both sides by 8.
25 = n
25 items were bought.
b. If 25 items were bought, but the expenses were instead $40, what would be the total profit?
p = 8(25) - 40
p = 200 - 40
p = 160
The profit decreased by 10.
A. no
b. yes
c. no
hope this helped!!!