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Dimas [21]
2 years ago
14

Craig ran the first part of a race with an average speed of 8 miles per hour and biked the second part of a race with an average

speed of 20 miles per hour. The entire two-part, 15-mile race took him 1.125 hours to complete. Which table correctly represents his rates, times, and distances for each part of the race?
Mathematics
2 answers:
yulyashka [42]2 years ago
7 0

Answer:

A.

Step-by-step explanation:

lutik1710 [3]2 years ago
4 0
Let the distance of the first part of the race be x, and that of the second part, 15 - x, then
x/8 + (15 - x)/20 = 1.125
5x + 2(15 - x) = 40 x 1.125
5x + 30 - 2x = 45
3x = 45 - 30 = 15
x = 15/3 = 5

Therefore, the distance of the first part of the race is 5 miles and the time is 5/8 = 0.625 hours or 37.5 minutes
The distance of the second part of the race is 15 - 5 = 10 miles and the time is 1.125 - 0.625 = 0.5 hours or 30 minutes.
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8 0
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If a customer leaves a tip of $7.35 and the bill was $49.00, what percent is the tip?
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6 0
2 years ago
Consider the function f(x) = x2 + 2x – 35. If one of the zeros of the
Whitepunk [10]

If one zeros is x= -7 then the other zero is x=5

Step-by-step explanation:

We are given the function: f(x) = x^2 + 2x-35

If one zeros of the function is x=-7 we need to find other zero of the function.

We can find zeros of the quadratic equation by factorizing the equation

f(x) = x^2 + 2x-35

Factorizing the quadratic equation:

x^2 + 2x-35=0\\x^2-5x+7x-35=0\\x(x-5)+7(x-5)=0\\(x+7)(x-5)=0\\x+7=0\,\,and\,\,x-5=0\\x=-7\,\,and\,\,x=5

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Keywords: Solving Quadratic Equation

Learn more about Solving Quadratic Equation at:

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  • brainly.com/question/1332667

#learnwithBrainly

8 0
3 years ago
14.2 as a mixed number.
krek1111 [17]
I think its 14 1/5 (?)
7 0
2 years ago
Read 2 more answers
See attached picture ​
lions [1.4K]

Answer:

ok i see it

Step-by-step explanation:

4 0
2 years ago
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