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lyudmila [28]
2 years ago
3

Hannah finds purple, blue, and silver space rocks while exploring.

Mathematics
2 answers:
blagie [28]2 years ago
5 0
To answer this, you will determine what fraction of the original rocks are silver by using the information about the other two colors.

If 2/3 of them area purple, than 1/3 are not.

If 3/4 of the remaining 1/3 is blue, than 3/4 x 1/3 = 3/12 of then are blue.

2/3 are purple, 3/12 of them are blue, the remaining is silver,

1 - 2/3 - 3/12
1 - 8/12 - 3/12 = 1/12

1/12 of the rocks are silver. If 3 are silver, write an equation that needs solved.

1/12r = 3
r = 36 rocks

There were 36 space rocks in total.
xz_007 [3.2K]2 years ago
5 0

Answer:

36

Step-by-step explanation:

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an employer will do a 50% match on your investment to a 401k retirement plan. If you decide to contribute a monthly amount of $2
faltersainse [42]

Answer:

The amount that should be in the account after 15 years is $95,321.85

Step-by-step explanation:

According to the given data, we have the following:

monthly amount of $220=R

interest rate is fixed at 2.05%. We require the monthly ineterest rate, hence monthly interest rate= 2.05%/12=0.1708%=0.0017

t=15years×12=180 months

In order to calculate how much should be in the account after 15 years, we would have to use the following formula:

Ap=<u>R(1-(1+i)∧-t)</u>

             i

Ap=<u>220(1-(1+0.0017)∧-180)</u>

                       0.0017

Ap=<u>162,04</u>

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Ap=$95,321.85

The amount that should be in the account after 15 years is $95,321.85

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6 0
2 years ago
Uri shared 6/8 of his orange with a friend. uri ste the rest so how much of the orsnge did he eat
Klio2033 [76]
He ate 1 - 6/8 which is 2/8, or 1/4 of an orange.
6 0
2 years ago
Read 2 more answers
a shopkeeper sold goods for rs 2400 and made a profit of 25% in the process. find his profit per cent if he had sold his goods f
miv72 [106K]

case 1,

Let the CP be ₹x,

SP = ₹2400

Profit = SP – CP

= 2400 – x

Profit % = {(2400–x)/ x} × 100%

According to the question,

{(2400–x)/ x} × 100 = 25

=> (2400–x)/ x= 25 /100

=> 100(2400–x) = 25x [ cross multiplication]

=> 240000 – 100x = 25x

=> 240000 = 25x + 100x

=> 240000 = 125x

=> 240000/125 = x

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So, CP = ₹1920

case 2,

SP = ₹2040

Profit = SP – CP

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= ₹120

profit % = 120/1920 × 100%

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<h3>Thus, his profit would be 16% if he had sold his goods for ₹2040.</h3>
6 0
2 years ago
What is the percentage decrease, if the price of a shirt is reduced from 800rupees to 640rupees?
MissTica
Decrease = Rs 800- Rs 640= Rs 160
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4 0
2 years ago
Read 2 more answers
Round to the nearest benchmark fraction 5/9
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1/2 because 5/9 is equivalent to 10/18. Half of 18 is 9 and 10 is close to 9 so the nearest benchmark fraction you should round to is 1/2. Hope this helps you!
5 0
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