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denis23 [38]
3 years ago
5

A mechanic earned $983.88 for42.5 hours of work. Which is the best estimate of how much the mechanic

Mathematics
1 answer:
valentina_108 [34]3 years ago
5 0

Answer:

23.15 an hour

Step-by-step explanation:

You might be interested in
5. An app developer projects that he will earn
grin007 [14]

Answer:

D. y = 2.30x​

Step-by-step explanation:

If he makes $230 for every hundred, that 2.30 a pop, so 2.30x for x apps.

7 0
3 years ago
A yard cleanup service charges a $380 fee plus $14 per hour. Another cleanup service charges a $260 fee plus $20 per hour. How l
amm1812

Answer:

C) 20 hours

Step-by-step explanation:

x = number of hours

A yard cleanup service charges a $380 fee plus $14 per hour.

380 + 14x

Another cleanup service charges a $260 fee plus $20 per hour.

260 + 20x

How long is a job for which the two companies' costs are the same?

380 + 14x = 260 + 20x

380 - 260 = 20x - 14x

120 = 6x

20 = x

5 0
3 years ago
What is the solution of -8/2y-8=5/y+4-7y+8/y^2-16
Mnenie [13.5K]
<h2>Answer:</h2>

The solution of the given equation is:

                         y=6

<h2>Step-by-step explanation:</h2>

The expression is given by:

\dfrac{-8}{2y-8}=\dfrac{5}{y+4}-\dfrac{7y+8}{y^2-16}

Now on solving for the given equation

\dfrac{-8}{2(y-4)}=\dfrac{5}{y+4}-\dfrac{7y+8}{(y-4)(y+4)}

since,

a^2-b^2=(a-b)(a+b)\\\\so,\\\\y^2-16=y^2-4^2\\\\i.e.\\\\y^2-16=(y-4)(y+4)

Hence, we get:

\dfrac{-4}{y-4}=\dfrac{5\times (y-4)-(7y+8)}{(y+4)(y-4)}\\\\i.e.\\\\\dfrac{-4}{y-4}=\dfrac{5y-20-7y-8}{(y-4)(y+4)}

-4\times (y-4)(y+4)=(-2y-28)(y-4)\\\\i.e.\\\\(y-4)(-4\times (y+4))=(-2y-28)(y-4)\\\\i.e.\\\\(y-4)(-4y+16)=(-2y-28)(y-4)\\\\i.e.

(y-4)(-4y+16)-(-2y-28)(y-4)=0\\\\i.e.\\\\(y-4)(-4y-16+2y+28)=0\\\\i.e.\\\\(y-4)(-2y+12)=0\\\\i.e.

y-4=0\ or\ -2y+12=0\\\\i.e.\\\\y=4\ or\ 2y=12\\\\i.e.\\\\y=4\ or\ y=6

but y≠ 4

since, the denominator of the term in the left side of the given equality and the second term in the right side of the given equality will be zero and hence, the expression will be not defined.

Hence, the value of y is: 6

7 0
3 years ago
Read 2 more answers
Ryan bought 3 books and a magazine . He paid $30 and relieved $5 change if the magazine cost twice as much as each book, find th
Montano1993 [528]

The books are $5, and the magazines are $10. I’m not sure which way you want it explained but since magazines are twice the price of books, you can solve the equation 3b + 2b = 25. This gives you b=5 which you just multiply by 2 giving you the price of a magazine.

8 0
3 years ago
Read 2 more answers
Multi digit subtraction 42-6
FromTheMoon [43]
42-6 is 36 that is your answer 

6 0
4 years ago
Read 2 more answers
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