Answer:
- One solution: (0.4, -4.8)
Step-by-step explanation:
<u>Given equations</u>
This system has one solution since the two lines represented by the equations have different slopes.
<u>Solution:</u>
- -2x - 4 = 1/2x - 5
- -2x - 1/2x = -5 + 4
- -2.5x = -1
- 2.5x = 1
- x = 1/2.5
- x = 0.4
<u>And y is:</u>
<u>The point is:</u>
38.1 seconds I believe simply divide 4m/s into 152.4 m and you will have 38.1 seconds
First change the percent to a decimal 40% = 0.4
then subtract 99 - 0.4 = 98.6
the answer is 98.6