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ollegr [7]
2 years ago
10

In 1950, scientist estimated a certain animal population in a particular geographical area to be 6400 in 2000, the population ha

d risen to 7200. If this animal population experiences the same % increase over the next 50yrs what will be approximate population be?
Mathematics
1 answer:
irina1246 [14]2 years ago
7 0

Answer:

8,100

Step-by-step explanation:

7,200 - 6,400 = 800 increased in 50. Years

What percentage is 800 of 6,400 (%/100 = is/of)

x/100 = 800/6400 (cross multiply)

(800*100)/6400 = 12.50%

(12.50 * 7200)/100 = 900 increased

7,200 + 900 = 8,100

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Find the common ratio of the geometric sequence 9, -18, 36, ...
Anna35 [415]

Answer:

-2

Step-by-step explanation:

Each term is being multiplied by -2.

9(-2) → -18

-18(-2) → 36

6 0
3 years ago
A shopper keeper sold a total of 15 boxes of pencils on Monday and Tuesday. She still three more boxes on Monday then on Tuesday
Nookie1986 [14]
I think 180 that should be your answer sorry i did not get here quick enough

8 0
2 years ago
HELP DUE IN 10 MINS!
Scilla [17]

Answer:

\checkmark \text{B. The area of the circle is } 729\pi,\\\checkmark \text{D. The arc length of the sector is } 12\pi

Step-by-step explanation:

Area of a circle with radius r: r^2\pi

Circumference of a sector with radius r: 2r\pi

Area of sector with angle \theta:  r^2\pi\cdot \frac{\theta}{360}.

Arc length of sector with angle \theta: 2r\pi\cdot \frac{\theta}{360}

Using these equations, we get the following information:

Area of circle: 27^2\pi=729\pi

Circumference of a circle: 2\cdot 27\cdot \pi=54\pi

Area of sector: 27^2\pi\cdot \frac{80}{360}=162\pi

Arc length of sector: 2\cdot 27\cdot \pi \cdot \frac{80}{360}=12\pi

3 0
2 years ago
Why doesn’t inverse variation have no x and y intercept?
kirill115 [55]

Answer:

Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. Thus, the equation describing this inverse variation is xy = 10 or y = .

I hope this was the answer u were looking for.

6 0
3 years ago
Find the difference between points M(6,16) and Z(-1,14) to the nearest tenth.
svlad2 [7]

I'm not sure what you mean by difference, so I am guessing you meant to write "distance". If this is not the case, then feel free to report me. Anyway, to find the distance between two points you would use the distance formula.

Distance Formula: d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}.

Let's substitute our point coordinates into the formula. We'll substitute -1 and 6 for x_2 and x_1, and 14 and 16 for y_2 and y_1. After substituting, your formula will now look like: d=\sqrt{(-1-6)^2+(14-16)^2}.

d=\sqrt{(-1-6)^2+(14-16)^2}

Subtract the coordinates.

d=\sqrt{(-7)^2+(-2)^2}

Square the subtracted coordinates.

d=\sqrt{49+4}

Add 49 and 4.

d=\sqrt{53}

Square root 53 and round the answer to the nearest tenth.

7.28 becomes 7.3.

7.3 units is the distance between points M and Z.

5 0
3 years ago
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