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1 year ago

Problem

Mathematics

1 answer:

Paraphin [41]1 year ago

4 0

Answer:

45/126 or 5/14

Step-by-step explanation:

a / b = 5/8

b / c = 9/14

a = 5

b = 8

b = 9

8 * 9 = 72

b = 72

If b was = 8 and now = 72, multiply a by 9.

b = 45

If b was 9 and now is 72, multiply c by 9.

c = 14 * 9 = 140 - 14 = 126

b / c = 45/126 or 5/14

You are welcome!

Kayden Kohl

9th Grade Student

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Find the time required for an investment of 7,000 dollars to grow to 14,000 dollars at an interest rate of 4% per

dimaraw [331]

Answer:

The time required is of 17.53 years.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

Find the time required for an investment of 7,000 dollars to grow to 14,000 dollars at an interest rate of 4% per year, compounded monthly.

This is t for which $A(t) = 14000$ , considering $P = 7000, r = 0.04, n = 12$ . So

$A(t) = P(1 + \frac{r}{n})^{nt}$

$14000 = 7000(1 + \frac{0.04}{12})^{12t}$

$(1.0033)^{12t} = 2$

$\log{(1.0033)^{12t}} = \log{2}$

$12t\log{1.0033} = \log{2}$

$t = \frac{\log{2}}{12\log{1.0033}}$

$t = 17.53$

The time required is of 17.53 years.

5 0

2 years ago

Need help with 2&3 I don't get ir

sergiy2304 [10]

For 2 divide, then do the subtraction and multiplication..
6 / 2 = 3
1-2+15=16
for 3, multiply inside of the parenthesis..
8x2=16 and subtract 3.
16-3=13..

5 0

2 years ago

Read 2 more answers

Please help with this

wlad13 [49]

Answer:

check pdf

Step-by-step explanation:

Download pdf

4 0

2 years ago

Help me with these will mark!