The anderson's drove 175 miles in 3 1/2 miles. What is their average driving rate, in miles per hour? At this rate, how many mil
1 answer:
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Your answer should be 12.73
Answer:
or
I chose the quadratic formula because I could not factor the quadratic.
Step-by-step explanation:
First of all let's work out what equals to. We can do this by replacing every
term in
with a 2.
So:
Now let's set up our equation . Replace the functions with what we know they equal to.
Now bring all the terms to one side:
Now we can solve this quadratic for .
I'll put this into the quadratic formula because it cannot be factored.
, Compare our quadratic to the general equation of a quadratic:
.
Now put these terms into the quadratic formula to get the values for .
So: =2.8 (1 decimal place)
or
= -4.3 (1 decimal place)