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eimsori [14]
3 years ago
6

-144r = -12rk find the value

Mathematics
1 answer:
OLga [1]3 years ago
5 0

k = 12

cancel out the r on both sides

then divide -144 by -12.

you get 12.

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Ou want to get an oil change every 4,000 miles. How many oil changes do you get in a year driving 1000 miles a month?
deff fn [24]
3.

1000 miles per month.
12 months in a year.
1000 × 12 = 12000 miles per year

Oil change every 4000 miles.
12000 ÷ 4000 = 3

Therefore 3 oil changes per year.
5 0
3 years ago
Mary's SUV has a 15-gallon gas tank. The SUV gets an estimated 24 miles per gallon.
Delvig [45]

Answer:

A = 360

B= 180

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Step-by-step explanation:

5 0
3 years ago
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
Best explained/correct answer gets brainliest.
Nuetrik [128]
3, 15, 75, 375, and here's why:
Basically, it's asking you to take 3, and multiply it by five each time to get a pattern.

1: 3
2: 
3*5 = 15
3: 
15*5 = 75
4: 
75*5 = 375

Add these together: 
3 + 15 + 75 + 375 = 468

Your answer is "A)", 468.
5 0
3 years ago
Simplified -\15| <br> How do you simplify this ?
Zina [86]

Answer -15 because it would be 15 but the negative would be turned into a negative again

4 0
3 years ago
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