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koban [17]
2 years ago
12

Proportion problems

Mathematics
2 answers:
Ilya [14]2 years ago
8 0

Answer:

10

Step-by-step explanation:

if thay had 20 eggs in 3 days then u take 12 chikens witch is adding

4 new chikens from the 8  the times then its what divided by 20 givs ur answer <3 have funnn

lys-0071 [83]2 years ago
3 0

Answer:

a)

10 days

b)

36 chicken

Step-by-step explanation:

Because i know how to do it

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Kent invested $5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per year
eduard

Answer:  The answers are given below.

Step-by-step explanation:  Given in the question that Kent invested $5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per year and the rest to a traditional account that earns 5% interest per year.

(A) Let, '$y' be the amount of money Kent invested in the traditional account, then we have

y=5000-x.

This is the required expression.

(B) After 1 year, total money in the bond account will be

M_b=x+\dfrac{1\times 4\times x}{100}=x+\dfrac{x}{25}=\dfrac{26}{25}x,

and amount of money in the traditional account will be

M_t=(5000-x)+\dfrac{1\times 5\times (5000-x)}{1000}=(5000-x)+\dfrac{5000-x}{200}\\\\\\\Rightarrow M_t=\dfrac{201(5000-x)}{200}.

Therefore, total amount invested after 1 year will be

M=M_b+M_t=\dfrac{26}{25}x+\dfrac{201(5000-x)}{200}=\dfrac{208x+1005000-201x}{200}\\\\\\\Rightarrow M=\dfrac{7x+1005000}{200}.

(C) If x = $500, then we have

M=\dfrac{7\times 500+1005000}{200}=\dfrac{1008500}{200}=\dfrac{10085}{2}=5042.5.

Thus, Kent will have $5042.5 in his retirement plan after 1 year.

4 0
3 years ago
How to find path length difference between parallel lines?
cricket20 [7]
Use socratic to find your answer!
3 0
3 years ago
A photocopy machine can reduce copies to 80% of their original size. By copying an already reduced copy, further reductions can
alukav5142 [94]

<u>Part a)</u> if a page is reduced to 80%, what percent enlargement is needed to return it to its original size?

Let

x---------> the percent enlargement

we know that

the original size is the 100%

so

x*80%=100%

x=(100%/80%)

x=1.25--------> 1.25=(125/100)=125%

therefore

<u>the answer Part a) is</u>

the percent enlargement is 125%

<u>Part b)</u> Estimate the number of times in succession that a page must be copied to make the final copy less than 15% of the size of the original

we know that

A photocopy machine can reduce copies to 80% of their original size

so

Copy N 1

0.80*100%=80%

Copy N 2

0.80*80%=64%

Copy N 3

0.80*64%=51.2%

Copy N 4

0.80*51.2%=40.96%

Copy N 5

0.80*40.96%=32.77%

Copy N 6

0.80*32.77%=26.21%

Copy N 7

0.80*26.21%=20.97%

Copy N 8

0.80*20.97%=16.78%

Copy N 9

0.80*16.78%=13.42%-------------> 13.42% < 15%

therefore

<u>the answer Part b) is</u>

the number of times in succession is 9


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3 years ago
Express 3.847* 10^(3 )in scientific notation
goblinko [34]

Answer:

Answer: 3,847 when expressed.

Step-by-step explanation:

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2 years ago
Schaumburg 7th Grade Class has a Student Group for Math each group member must pay $10 each year in membership dues. The number
Maksim231197 [3]

Answer:

Step-by-step explanation:

70

3 0
3 years ago
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