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andriy [413]
4 years ago
7

I WILL MARK BRAINLIEST!!!! An underground mine elevator descends 12% of the total depth every minute. The total depth of the ele

vator is 75 meters below the ground. How many meters below the ground is the elevator after 2 minutes? −18 meters −9 meters −4.5 meters −22.5 meters
Mathematics
2 answers:
JulijaS [17]4 years ago
6 0

Answer:

-18 meters

Step-by-step explanation:

Total depth = 75 meters

<u><em>1 Minute:</em></u>

=> -12% of 75

=>- \frac{12}{100} *75

=> -(3*3)

=> -9 meters

<u><em>After 2 minutes:</em></u>

=> 2(-9)

=> -18 meters

Dahasolnce [82]4 years ago
3 0

Answer:

after 1 Min it's -9

after 2 mins it's -1.08

Step-by-step explanation:

12% X 75 = 9

12% X 9 = 1.08

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vlabodo [156]

Answer:

Yes he has enough fence to go round the flower bed.

Step-by-step explanation:

1 yard = 3 feet

25 feet = 25/3 = 8.33 yards

Yes he has enough fence to go round the flower bed.

8 0
3 years ago
-1/4a - 4 =4<br> what does a =
stellarik [79]

Answer:

a = -32

Step-by-step explanation:

-1/4a - 4 =4

Add 4 to each side

-1/4a - 4+4 =4+4

-1/4a = 8

Multiply each side by -4 to isolate a

-1/4 a * -4 = 8 *-4

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8 0
3 years ago
(18÷3)2+((17+3)+5_2)
Paul [167]

Answer:

35, Hope I got right

Step-by-step explanation:

6×2+20+3

12+23

35

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4 years ago
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amid [387]

Answer:

21.56

Step-by-step explanation:

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3 years ago
Solve. 10 = c over 3 – 4 + c over 6
AleksAgata [21]

Answer:

c = 28

Step-by-step explanation:

10=\frac{c}{3} -4+\frac{c}{6}

Make sure the fractions have a common denominator so that they can be added together. Take \frac{c}{3} and multiply it by \frac{2}{2} so that way the fractions will have a common denominator.

10=\frac{2c}{6} -4+\frac{c}{6}

Add the fractions together.

10=\frac{3c}{6} -4

Add 4 to both sides so that \frac{2c}{6} is left alone.

14=\frac{3c}{6}

Multiply both sides by 6 so you will then have 3c

84=3c

Divide both sides by 3 to get c

28=c

4 0
3 years ago
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