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Rudik [331]
3 years ago
5

Find the difference.

Mathematics
1 answer:
MrMuchimi3 years ago
3 0

To find the difference of the given expression, first step is to get rid of parenthesis. So, distribute negative sign to each terms of the second parenthesis. Hence,

(9x² + 10x + 4) - (9x² + 5x - 1)

= 9x² + 10x + 4 - 9x² - 5x + 1.

= (9x² - 9x²) +(10x - 5x) + (4 + 1) Group the like terms.

= 0 + 5x + 5 Combine the like terms.

= 5x + 5.

So, first choice is correct.

Hope this helps you!

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Jada's sister works in a furniture store.
Bingel [31]

Answer:

1) $16.35

2) 75%

3) $245  

Step-by-step explanation:

1) Jada earns = $15 per hour

  9% increase = 15 * 9/100 = $1.35

  Increased Jada's pay = 15+1.35 = $16.35

2) Markup = selling price - cost= $350 - 200= $150

   Markup % = \frac{sale price - cost }{cost}*100 \

                      = \frac{150}{200}*100 = 75%

3) Jada's sister commission is 3.5% of $7000

          = \frac{3.5}{100}* 7000

           = $245  

5 0
2 years ago
Which of the following best describes the slope of the line below?
atroni [7]

Answer:

Zero

Step-by-step explanation:

Since the line is a horizontal line, the slope does not change.  The slope is zero.

8 0
2 years ago
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If 43 photocopies cost $25.80, how much does one photocopy cost
juin [17]

each photocopie cost .60 cents

8 0
3 years ago
Cole has already taken 7 quizzes during past quarters, and he expects to have 1 quiz during each week of this quarter. Write an
san4es73 [151]

Answer:

y = x + 7

Step-by-step explanation:

x = number of weeks

y = the total number of quizzes y.

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y = 1x + 7

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7 0
3 years ago
M=7/5, (4,-9)<br><br>Put the equation of the line in the form Ax+By=C<br>do not do file please-
NeTakaya

Answer:

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y = 7/5x - 14 3/5

4 0
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