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zvonat [6]
3 years ago
7

15x – 4y = 18 As a fraction?

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

2(9+2y)/15 Hope this helped!!

Step-by-step explanation:

You might be interested in
Maria has added 2 liters of pure alcohol to 8 liters of a 48% alcohol solution. What is the alcohol concentration of the resulti
ss7ja [257]

Answer:

The alcohol concentration of the resulting solution is 58.4%

Step-by-step explanation:

- At first we must to find the quantity of pure alcohol in the 8 liters

∵ The alcohol concentration is 48% in 8 liters

∴ The quantity of pure alcoholic = \frac{48}{100}*8=3.84 liters

- She added 2 liters pure alcohol to the solution that means the solution

  increased by 2 liters and alcohol quantity increased by 2 liters

∵ She added 2 liters pure alcohol

∴ The quantity of pure alcohol = 2 + 3.84 = 5.84 liters

∴ The resulting solution = 2 + 8 = 10 liters

- Now we need to find the concentration of alcohol in the resulting

  solution

∵ The quantity of pure alcohol = 5.84 liters

∵ The resulting solution = 10 liters

∴ The concentrate of alcohol = \frac{5.84}{10}*100 % = 58.4%

The alcohol concentration of the resulting solution is 58.4%

5 0
3 years ago
Read 2 more answers
A saleswoman earns 3% commission on all the merchandise that she sells. Last month she sold $3000 worth of merchandise. How much
Lynna [10]

She earned $90 commission last month.

Step-by-step explanation:

Given,

Commission rate of saleswoman = 3%

Sold worth of merchandise = $3000

Commission amount = 3% of sold worth

Commission\ amount=\frac{3}{100}*3000\\\\Commission\ amount=\frac{9000}{100}\\\\Commission\ amount=\$90

She earned $90 commission last month.

Keywords: percentage, division

Learn more about division at:

  • brainly.com/question/2228475
  • brainly.com/question/2226873

#LearnwithBrainly

4 0
3 years ago
Which phrase could the expression x-4 represent? a number less than 4 the difference of a number and 4 the sum of a number and 4
ioda

Answer:

Four less a number

Step-by-step explanation:

x-4 is literally subtracting 4 and 4 less a number is basically also subtracting 4 from an equation.

4 0
3 years ago
Read 2 more answers
A cinema has three screens.
lidiya [134]

Answer:

200 are on screen 1

125 are on screen 2

175 went to screen 3

Step-by-step explanation:

10% is 50 so 50 x 4 =200

25% of 500 is 12, divide 500 by 4

35% is 25% + 10% = 125 + 50 = 175

7 0
3 years ago
Someone please help me
Karolina [17]
Answer: 64f^24

Steps:
(2f^4)^6
=2f^4 * 2f^4 * 2f^4 * 2f^4 * 2f^4 * 2f^4
=64f^24
Where ^4 means to the power of 4 and so on
5 0
3 years ago
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