See the explanation
<h2>
Explanation:</h2>
The complete question is attached below. In order to solve this problem, we'll use a graphing tool. First of all, we'll say that the LHS is a linear function and the RHS is another linear function, so for each case, we'll have:

For each graph,
will be drawn in red while
will be drawn in blue.
Case 1:

So by equating both equations:

By using graphing tool we get a point of intersection at which the x-value is the solution to our equation. So:
<u>Solution:</u>

See First Figure below.
Case 2:

Applying a similar method as in case 1.
<u>Solution:</u>

See Second Figure below.
Case 3:

Applying a similar method as in case 1.
<u>Solution:</u>

See Third Figure below.
Case 4:

Applying a similar method as in case 1.
<u>Solution:</u>

See Fourth Figure below.
<h2>Learn more:</h2>
Methods for solving system of equations: brainly.com/question/10185505
#LearnWithBrainly
To solve a square root, get the ^2 on one side and the 81 on the other side.
add 81 to both sides.
c^2 = 81
to clear the power of 2, take the square root of both sides.
c = + - sqrt81
c = + - 9
c = 9 and c = -9
Answer:
9.54 feet
Step-by-step explanation:
Using Pythagoras rule :
Length of ramp = 10 feets = hypotenus
Hypotenus² = opposite² - adjacent²
d² = 10² - 3²
d² = 100 - 9
d² = 91
d = √91
d = 9.5393920
d = 9.54 feets
Step-by-step explanation:
it has been awhile since ive done this.
so a line =180
so to find the other angle you simply subtract 120 from 180.