68 miles / hour
Average speed = distance / time
distance = 170 and time = 5/2 ( as an improper fraction)
speed = 170 ÷ 
= 170 × 
= 
= 68
Answer:
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Answer:
2nd option: 2y=6x+8 and y=3x+4
Step-by-step explanation:
If you divide the first by 2, you get the second equation.
This means that both equations plot an identical line (they lie on top of each other /also known as "coincide"). This means, that there are infinitely many solutions.
In 2D (x-y plane for example), straight lines can have no solutions if they have the same gradient/slope/ they are parallel and different y-intercepts, because they will never cross.
Here, they have same gradient and y-intercept so all points on the line are valid solutions to the equation
The answer is 2/7 because you're finding the greatest common factor of both numbers. The gcf is 8, so divide both by 8 and you'll get 2/7
5(c + ⁴/₅) + 6 = 50
5(c) + 5(⁴/₅) + 6 = 50
5c + 4 + 6 = 50
5c + 10 = 50
<u> - 10 - 10</u>
<u>5c</u> = <u>40</u>
5 5
c = 8
