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emmasim [6.3K]
3 years ago
7

Two sisters open saving accounts with $60 each that their grandmother gave them. The first sister adds $20 each month to her acc

ount. Her sister adds $40 every two months to her $60. If the sisters continue to make deposits at the same rate, when will they have the same amount of money?
Mathematics
2 answers:
nevsk [136]3 years ago
7 0

Answer:

Second month with $100 savings each

Step-by-step explanation:

Opening savings= $100 each

Additional savings

Sister 1 deposit = $20/month

Sister 2 deposit= $40 every 2 months.

First month= opening savings+ additional savings

Sister 1= $60+$20= $80

Sister 2=$60+$0= $60

Second month=

Total month savings+ additional deposit

Sister 1=$80+$20=$100

Sister 2=$60+$40=$100

At the end of the second month, the both have $100 each

maw [93]3 years ago
4 0
Month 1
Sister 1; 60/ Sister 2; 60
Month 2
Sister 1; 80/ Sister 2; 60
Month 3
Sister 1; 100/ Sister 2; 100

On month 3 the should both have $100 in their accounts.
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Please answer the question and leave an explanation on how to solve each part. Thank you in advance!
horsena [70]

The solutions are

  • it is going to take 15.9 months to raise 10000 dollars
  • You will have $37.31 after you have bought the car
  • The money deficit would be $37.31

<h3>How to solve the question</h3>

a. 10000 = 9359.08e(0.05)

e⁰⁰⁵ = 10000/9359.08

= 0.05 = ln(10000/9359.08)

= 1.325 years

convert to months = 15.9 months

Hence it is going to take 15.9 months to raise 10000 dollars

b. 9359.08 x e^(0.05 x1.25)

= 9962.69

10000 - 9962.69

= $37.31

You will have $37.31 after you have bought the car

c. The money loss and the deficit would be same as above $37.31

d. ln(e^a) = a

We can clearly see that the money cannot be raised in the 15 months from $ 9359.08. there is a deficit amount of $37.31

Read more on compound interest here: brainly.com/question/24924853

#SPJ1

3 0
1 year ago
What are all the factor strings of 840?
nexus9112 [7]
840|2\\420|2\\210|2\\105|5\\.\ 21|3\\.\ \ 7|7\\.\ \ 1|\\\\840=2\times2\times2\times5\times3\times7=2^3\times3\times5\times7
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Find the length of side BC. Round your answer to the nearest tenth.
Bogdan [553]

Answer: 5.4

Step-by-step explanation:

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2 years ago
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Sunny_sXe [5.5K]
There's more ways than one to solve this, just as there's more ways than one to skin a cat.

Two paralle lines have the same slope, so the desired new line looks exactly like the given line 3x + 5y = 6, except that the constant, 6, is replaced by another value.

Write out 3x + 5y = c
Replace x with 0 and y with 3.  Then 3(0) + 5(3) = c, and c = 15.

Thus, the equation of the new, parallel, line is 3x + 5y = 15.
7 0
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What is the slope of the line that contains these points?
Zarrin [17]

Answer:

slope = 7 or 7/1 <--- (7 over 1)

Step-by-step explanation:

rise = 7

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3 years ago
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