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Dmitriy789 [7]
3 years ago
10

Can anyone help me with this? I'll mark brainliest for best answer

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

The answer is k = -12

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If I read 2/3 of a book that has 222 pages how many pages do I have left to read
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Multiply 2/3 by 222 then subtract the number from 222 and you should get your answer
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An above swimming pool is leaking after 1/2 hour the pool has leaked 7/8 of a gallon of water
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The answer to your question are <span>1.75</span>
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2. A rectangle has a perimeter of 100. Its
slava [35]

Answer:

Option H

Step-by-step explanation:

Perimeter of rectangle= 2(length) +2(width)

100= 2(5a -22) +2[½(a +1)]

Expand:

100= 2(5a) +2(-22) +a +1

100= 10a -44 +a +1

Simplify:

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11a= 143

Divide both sides by 11:

a= 143 ÷11

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Thus, option H is correct.

8 0
3 years ago
-0.4a + 3 = 7 <br> a=? <br> please help
AleksandrR [38]

Answer:

a = -10

Step-by-step explanation:

7 0
3 years ago
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A certain city's population is 120,000 and decreases 1.4% per year for 15 years.
mart [117]

Answer:

  • Decay Problem.
  • Decay rate,  r = 0.014
  • Initial Amount =120,000
  • P(t)=120000(0.986)^t
  • P(10)=104,220

Step-by-step explanation:

The exponential function for growth/decay is given as:

P(t)=P_0(1 \pm r)^t, where:\\P_0$ is the Initial Population\\r is the growth/decay rate\\t is time

In this problem:

The city's initial population is 120,000 and it decreases by 1.4% per year.

  • Since the population decreases, it is a Decay Problem.
  • Decay rate, r=1.4% =0.014
  • Initial Amount =120,000

Therefore, the function is:

P(t)=120000(1 - 0.014)^t\\P(t)=120000(0.986)^t

When t=10 years

P(10)=120000(0.986)^10\\=104219.8\\\approx 104220 $ (to the nearest whole number)

8 0
3 years ago
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