MATHEMATICS MIDDLE SCHOOL

According to a survey, the population of a city doubled in 12 years.%. The population will grow to three times its current
The annual rate of increase of the population of this city is approximately
size in approximately
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Answers

Answer 1
Answer:

Answer:

5.78%

Step-by-step explanation:\

I hope this helps ^^

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There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work?-Please Explain
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Answers

you divide the workers that where present by the total amount of workers , so 29 /36 =.80555  .80555*100=80.555%  so 80.55% of workers showed up

2 PointsIf y(x) = x - 2, which of the following is the inverse of Ax)?
O . F'(x) = 2 - x
O B. f'(x) = x-2
O c. f'(x) = 2x
OD. F'(x) = x+2

Answers

Answer:

D

Step-by-step explanation:

let y = x - 2 and rearrange making x the subject, that is

y = x - 2 ( add 2 to both sides )

y + 2 = x

now change x to f^(-1) (x) and y back to x, thus

f^(-1)(x) = x + 2 → D

How many grams are in 40 hectograms? 400 4,000 40,000 400,000

Answers

4000 grams in 40 hectograms
4000grams is 40 hectograms

Factor 20x2 + 25x – 12x – 15 by grouping.

Answers

Answer:

(4x+5)  (5x-3)

Step-by-step explanation:

20x^2 + 25x        – 12x – 15

From the first two terms factor out 5x  and  the last two terms factor out -3

5x(4x+5)       -3(4x+5)

Now we can factor out (4x+5)

(4x+5)  (5x-3)

What is the surface area of a cube with a side of length 14 meters?

Answers

area of a cube=6(side)²
area of a cube=6*(14 m)²=6*196 m²=1176 m²

Answer: 1176 m²
Best Answer 1176m²

 SA = 6 × (14)²
 SA = 6 × 14×14
SA = 6×14
SA= 84²
 which would give you 1176m²

Ribbon candy costs $2.50 per foot.How many feet can you buy if you have $11.25?

Answers

Answer: 4.5 feet he can buy if he has $11.25

Step-by-step explanation:

Since we have given that

Cost of candy per foot = $2.50

Total money he spent on candy = $11.25

Let the number of feet he can bought be x

Now, According to question, we get that ,

2.50x=11.25\n\nx=(11.25)/(2.50)\n\nx=4.5

So, 4.5 feet he can buy if he has $11.25.
4 and a half feet...
Other Questions
PLEASEEE HELPP The water usage at a car wash is modeled by the equation W(x) = 3x3 + 4x2 − 18x + 4, where W is the amount of water in cubic feet and x is the number of hours the car wash is open. The owners of the car wash want to cut back their water usage during a drought and decide to close the car wash early two days a week. The amount of decrease in water used is modeled by D(x) = x3 + 2x2 + 15, where D is the amount of water in cubic feet and x is time in hours. Write a function, C(x), to model the water used by the car wash on a shorter day. C(x) = 2x3 + 2x2 − 18x − 11 C(x) = 3x3 + 2x2 − 18x + 11 C(x) = 3x3 + 2x2 − 18x − 11C(x) = 2x3 + 2x2 − 18x + 11
What is the value of the function when x = 2?
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