I need help writing an expression

Mathematics

1 answer:

zepelin [54]3 years ago

5 0

I can help you write one

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A moving company charges $800 plus $16 per hour. Another moving company charges $720 plus $21 per hour. How long is a job that c

Vesnalui [34]

Let x be the number of hours worked.

800 + 16x = 720 + 21x
800 - 720 = 21x - 16x
80 = 5x
x = 16
∴ A job that would cost the same would take 16 hours.

Now to double check...
800 + 16 x 16= 1056
720 + 16 x 21= 1056

The answers are correct.

4 0

3 years ago

Sooooooooooooooooooooo can someone help with this

igor_vitrenko [27]

82 + 67 = 146

180 - 146

Angle ? = 44

8 0

3 years ago

Read 2 more answers

Write the phrase as an expression. Then evaluate when y=20.

alisha [4.7K]

Answer:

$Q=\frac{40}{y-16}$

$Q=10$

Step-by-step explanation:

Let the quotient be represented by 'Q'.

Given:

The difference of a number 'y' and 16 is $y-16$

Quotient is the answer that we get on dividing two terms. Here, the first term is 40 and the second term is $y-16$ . So, we divide both these terms to get an expression for 'Q'.

The quotient of 40 and $y-16$ is given as:

$Q=\frac{40}{y-16}$

Now, we need to find the quotient when $y=20$ . Plug in 20 for 'y' in the above expression and evaluate the quotient 'Q'. This gives,