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Mrac [35]
3 years ago
11

The population of a city was 572,000 in 2010. In the 2000 census the population was 607,000. What was the rate of decrease of th

e population from one census to the next? Round to the nearest percent.
Mathematics
1 answer:
kramer3 years ago
7 0

Answer:

6%

Step-by-step explanation:

<em>To solve this you need to subtract 607000 by 572000 to see how many people in the population decreased.</em>

607,000- 572,000= 35,000

Then you put 35,000 over 607,000

also you need x over 100

35000/607,000 x/100

Then do cross product property

35,000*100=3,500,000

607,000* x= 607,000x

3,500,000= 607,000x

Then do 3,500,000 divided by 607,000

You get 5.76%

Round to the nearest percent and get 6%

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You are designing a rectangular swimming pool that is to be sent into the ground. The width of the pool is 5 feet more than the
Vikentia [17]

Answer:  depth = 5 ft

width =  10 ft

length =  40 ft

Step-by-step explanation:

d =  depth

width = d + 5

length = d + 36

Volume = length x width x depth = 2000 cf

d(d+35)(d+5) = 2000

d(d^{2} + 40d + 175) = 2000

d^3 + 40d^2 + 175d = 2000

rewrite in standard cubic polynomial form : ax3 + bx2 + cx + d = 0

d^3 + 40(d^2) + 175d - 2000 = 0

Find the roots of the cubic polynomial:

factors of 2000 are 1, 5, 10 15, 20, etc.

Try the factor 5 first by plugging it in the equation:

5^3 + 40(5^2) + 175(5) - 2000 = 0  

Lucky break!  No need to find the other roots because they will be negative, and you can't have a negative value for a pool depth.

So, depth = 5 ft

width = 5 + 5 = 10 ft

length = 5 + 35 = 40 ft

6 0
1 year ago
Find the third side in simplest radical form:
Mkey [24]

Answer: 53

Step-by-step explanation:

They are both right legs. Use a^2+b^2=c^2.

A= 28^2 B=45^2

A= 784 B= 2025. 2025+ 784= 2809 (radical 2809) To simplified is 53

5 0
2 years ago
A large company put out an advertisement in a magazine for a job opening. The first day the magazine was published the company g
Evgen [1.6K]

Answer:

16 responses

Step-by-step explanation:

we know that

A geometric sequence, is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

a_n=r^{n-1}

where

a_n----> n^{th} term of the sequence

r ---> is the common ratio

a ---> the first term of the sequence

a=50\\r=100\%-10\%=90\%=90/100=0.90

substitute

a_n=50(0.90)^{n-1}

For n=12

substitute

a_n=50(0.90)^{12-1}=16

3 0
3 years ago
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morpeh [17]

Answer:

options (c) is right answer

7 0
2 years ago
Read 2 more answers
Cora read one sixth of her book on day one. She read one fourth of her
kogti [31]

Answer:

\frac{5}{12}

Step-by-step explanation:

\frac{1}{6} + \frac{1}{4} =  finding common denominator which is 12.   so multiply both sides  with what makes them 12 ...... \frac{1}{6}  \frac{2}{2}    & \frac{1}{4}\frac{3}{3}  then add = \frac{5}{12}

7 0
3 years ago
Read 2 more answers
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