Solve for x in the equation 2x^2 + 3x - 7 = x^2 + 5x + 39
1 answer:
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Note that this problem is given as
(m - n)/2
where the numerator is m - n and then the denominator is 2.
You will need to find the value in the numerator, then divide by 2.
show steps how you got your answer
(m - n)/2
where the numerator is m - n and then the denominator is 2.
You will need to find the value in the numerator, then divide by 2.
show steps how you got your answer
The equation represents the total cost, c, of buying x number of adult tickets and y number of child tickets.
Express
Now divide this equation by 5:
Answer: correct choice is A
<h2>Hello!</h2>
The answers is:
The first mechanic's rate is $70 per hour.
The second mechanic's rate is $110 per hour.
<h2>Why?</h2>Let's write the given information in order to make the equations that will help us to solve this problem.
Let be "x" the first mechanic's rate and "y" the second mechanic's rate, so:
If the first mechanic worked for 5 hours and the second mechanic worked for 15 hours, and the together charged a total of $2000.
Also, we know that the sum of the two rates was $170 per hour, so:
Then, isolating "x" and replacing it into the first equation, we have:
So, the second mechanic's rate is $110 per hour.
Now, to calculate the first mechanic's rate we need to replace "y" into the second equation:
So, the first mechanic's rate is $70 per hour.
Have a nice day!