The answer it 1. is A.
The answer to 2. is B.
You only need to look at the y intercepts.
-11 - -7 is -4, but you can't have a negative distance so it's just 4
Answer:
The solution set is (4, 3)
Step-by-step explanation:
To solve by substitution, start by solving the second equation for y.
2x - y = 5
-y = -2x + 5
y = 2x - 5
Now that we have this, put that expression in for y in the first equation and solve for x.
5x - 2(2x - 5) = 14
5x - 4x + 10 = 14
x + 10 = 14
x = 4
Now that we have the value of x, input it into either equation and solve for y.
2x - y = 5
2(4) - y = 5
8 - y = 5
-y = -3
y = 3
82.300 * x percent = 69.955
To solve this equation you have to transpose it:
x percent = 69.955/82.300 = 0,85 = 85%
That's the percentage of 69.955 of 82.300.
So the last step is to subtract it from 100%:
100% - 85% = 15 % --> percent of decrease
If he drives 45 miles each hour, then in 'h' hours, he will cover ' 45h ' miles.