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Likurg_2 [28]
3 years ago
10

Suppose the population of a certain city is 5289 thousand. It is expected to decrease to 4530 thousand in 50 years. Find the per

cent decrease.
The percent decrease is approximately \%.
(Round to the nearest tenth.)
Mathematics
1 answer:
Tcecarenko [31]3 years ago
5 0

Answer:

14.4% decrease

Step-by-step explanation:

Here is the formula for finding the percentage of decrease:

(starting value - final value) / starting value * 100.

So for your question,

\frac{5289-4530}{5289} =.0144\\.0144 * 100 = 14.4\\/

There was a 14.4% decrease within 50 years.

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Mrs. Morton has a special reward system for her class. When all her students behave well, she rewards them by putting 3 marbles
Olin [163]

Answer: 24+3r\geq100

r=26


Step-by-step explanation:

Given: Mrs. Morton rewards her students on behave well by putting 3 marbles into a marble jar.

If the jar contains 24 marbles. and r represent the number of additional times the class is rewarded then the required equation will be

24+3r\geq100

If we solve it, we will get the minimum the jar contains 24 marbles.

To solve equation, subtract 24 from both sides, we get

3r\geq100-24\\\Rightarrow3r\geq76\\\Rightarrow\ r\geq\frac{76}{3}\geq25.333\approx 26

Hence, the minimum whole number of additional times they need to be rewarded so they can have a party=26

3 0
4 years ago
Read 2 more answers
2 1/2 =1 2/3 ÷y<br> what is y
Maslowich

Answer: 0.664

Step-by-step explanation: 1.666/0.664=2.5

7 0
3 years ago
What is 67,456 divided by 32 and tell me how
V125BC [204]

Answer:

2108

Step-by-step explanation:

Divide 67,456 by 32, using long division.

1) How many times 32 go into 67? (2 times, with a remainder of 3)

2) Bring down the 4.

3) How many times does 32 go into 34? (1 time, with a remainder of 2)

4) Bring down the 5

5) How many times does 32 go into 25? (0 times, so write 0)

6) Bring down the 6.

7) How many times does 32 go into 256? ( 8 times, no remainder)

8) Your answer is 2108

4 0
3 years ago
A cylinder has a radius of 40 ft and a height of 17 ft.
dusya [7]
So the formula is 2pi(r)(h)+2(pi)(r^2)

2(3.14)(40)(17)+2(pi)(40^2)
so then multiply and add it up and you get

about 14,325 1/3 or 14,325.34
5 0
3 years ago
Read 2 more answers
42 base x +53base x = 125base x. what<br>is the value of x​
Finger [1]

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

The largest number is 5. Therefore x ≥ 6.

Convert numbers from x system to decimal system:

42_x=4x+2\\\\53_x=5x+3\\\\125_x=1x^2+2x+5

Solve the equation for x:

42_x+53_x=125_x\Rightarrow4x+2+5x+3=x^2+2x+5\qquad\text{combine like terms}\\\\(4x+5x)+(2+3)=x^2+2x+5\\\\9x+5=x^2+2x+5\qquad\text{subtract 5 from both sides}\\\\9x=x^2+2x\qquad\text{subtract}\ 9x\ \text{from both sides}\\\\0=x^2-7x\\\\x^2-7x=0\qquad\text{distributive}\\\\x(x-7)=0\iff x=0\ \vee\ x-7=0\\\\x=0

7 0
3 years ago
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