Hi.
-19 + 12 is the same as saying 12 - 19
So, -19 + 12 = -7
You're welcome.
Hello!
Since (1, -2) is the point of intersection, then it is the solution to the system of equations. Let's test our answer to see if it's correct:

But that's only for the first one, let's test for the second one:

This is how we know that (1, -2) is the solution to the system of equations. Hope I helped! :3
The expression for perimeter of triangle is 6x + 21
<em><u>Solution:</u></em>
Given that,
Let the length of the bottom of the triangle be "x"
Another side is 7 more than 4 times the length of the bottom of the triangle
Length of another side = 7 + 4x
The last side is 14 more than the bottom of the triangle
Length of last side = 14 + x
<em><u>The perimeter of triangle is given as:</u></em>
Perimeter = sum length of length of all 3 sides of triangle

Thus expression for perimeter of triangle is 6x + 21
Answer:
Step-by-step explanation:
Let the number of month be x
<u>Expression to show amounts</u>
- 2350 + 200x = 3250 + 175x
- 200x - 175x = 3250 - 2350
- 25x = 900
- x = 900/25
- x = 36
<u>Amount</u>
- 2350 + 200*36 = 2350 + 7200 = 9550
Time is 36 months
Amount is $9550