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ziro4ka [17]
3 years ago
10

20 POINTS!!! NEED ALL 4 ANSWERED!!!

Mathematics
1 answer:
TEA [102]3 years ago
3 0

Answer:

1. x = 10  2. x = 7  3. x = 1  4. x = 6

Explanation:

1. -2x + 81 = 61 (Subtract 81 from 61)

  -2x = -20 (Divide)

   x = 10

2. 9x - 58 = 5 (Add 58 to 5)

   9x  = 63 (Divide)

   x = 7

3. 21 +10x = 3x + 28 (Rearrange expression)

   21 - 28 = 3x - 10x (Combine like terms)

   -7 = -7x (Divide)

    x = 1

4. 9x - 42 = 2x (Rearrange)

   9x - 2x = 42 (Combine like terms)

   7x = 42 (Divide)

   x = 6

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Volume=legnth times width times height
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volume=8 times 5 times 4=160

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Which place is the better but
lawyer [7]

Answer:

Stop and Save

Step-by-step explanation:

Find the cost of one apple in each place.

<u>Quick Market</u>:

Divide the total cost with the amount of apples:

1.08/3 = 0.36

The cost for one apple in <em>quick market </em>is $0.36

<u>Stop and Save</u>:

Divide the total cost with the amount of apples:

1.10/5 = 0.22

The cost for one apple in <em>Stop and Save</em> is $0.22

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$0.22 < $0.36 ∴ <em>Stop and Save</em><em> </em>is cheaper than Quickmarket by $0.14, making Stop and Save your answer.

~

3 0
3 years ago
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Barb earns 26% commission on each lab manual she sells. If she sells 1200 manuals at $9.95 each, find her commission.
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A)Three out of my four brothers play soccer. What percent of my brothers do not play soccer?
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A. 1)25%
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Marcus wants to save $378 in order to buy a new electronic
melomori [17]

Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

<h3>Define the meaning of the equation?</h3>

A mathematical assertion in which you use mathematical symbols to demonstrate that two sums are equal.

As per specified data-

  • Marcus wishes to save $378 so that he can purchase a new electronic keyboard.
  • Every week, he saves $15.75 from his paycheck.

Let 'x' be the number of weeks required to complete the amount.

The equation becomes.

378 = 15.75x

For the number of week required.

x = 378/15.75

x = 24

Thus, Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

To know more about the equation, here

brainly.com/question/14107099

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