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Ostrovityanka [42]
3 years ago
15

Need help with this one​

Mathematics
1 answer:
fgiga [73]3 years ago
3 0

Answer: its b

Step-by-step explanation:

just do b

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Hiroto spends \$68 on e-books and paperback books combined. Each e-book he buys costs $5 and each paperback book he buys costs $
alina1380 [7]

The equation that can be used to model the situation regarding the e-books and paperback is 5x + 12y = 68

The following information can be gotten from the question:

Total amount spent on e-books and paperback = $68

<em>Cost</em><em> of e-book = $5 each.</em>

<em>Cost of paperback = $12 each</em>

<em>Number of</em><em> e-books</em><em> = x</em>

<em>Number of paperbacks = y</em>

Therefore, the equation that can be used to model the situation regarding the <em>e-books </em>and <em>paperback</em> will be:

= 5(x) + 12(y) = 68

5x + 12y = 68

The equation will be 5x + 12y = 68

Read related link on:

brainly.com/question/25212173

5 0
2 years ago
A triangle has a perimeter of 48 feet. If the three sides of the triangle are n, 4n−2, and 4n−4, what is the length of each side
alexdok [17]

Answer:

6; 22; 20 (ft.)

Step-by-step explanation:

1) if the length of the each side are: n; 4n-2 and 4n-4, then the expression of the perimeter can be written: P=n+4n-2+4n-4 or P=9n-6.

2) if according to the condition perimeter is 48 (ft.), then

9n-6=P; ⇔ 9n-6=48; n=6.

3) if n=6, then the required lengths of the sides are:

n=6 (ft.);

4n-2=22 (ft.);

4n-4=20 (ft.)

3 0
2 years ago
twice the difference of a number and 7 is equal to three times the sum of the number and 7. find the number​
otez555 [7]

Answer:

- 35  

Step-by-step explanation:

2(x - 7) = 3(x+7)

2x - 14 = 3x + 21

- 21 - 14 = 3x - 2x

x = - 35  

Rechecking :

2(-35 - 7) = 3 (-35 +7)

- 84 = - 84

I hope im right!!!

7 0
3 years ago
Solve the equation.<br><br> 3x-5=2(-x-5)
Ira Lisetskai [31]

Answer:

The value of x = -1

Step-by-step explanation:

=> 3x-5=2(-x-5)

=> 3x - 5 = -2x - 10

=> 3x + 2x = -10 +5

=> 5x = -5

=> x = -5/5

=> x = -1

5 0
1 year ago
Read 2 more answers
PLEASE HELP!!
ad-work [718]

Step-by-step explanation:

  • 5^-2= 1/25 (as when taken up 25 it becomes 5^-2).
  • 2^5= 32 (when we multiply 2 for 5 times, we get 32).(2×2×2×2×2)
  • 2^-4=1/16 (as when we take up 16 we get 2^-4)
  • 5^3=125 (when we multiply 5 for 3 times we get 125)(5×5×5)

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
3 years ago
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