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3 years ago

5

I need help it please

2 answers:

VARVARA [1.3K]3 years ago

7 0

100 Minutes of practice

marissa [1.9K]3 years ago

5 0

Answer:

5 minutes of practice it shows at the bottom

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9.Solve. 5a - 10 = 4a + 8Immersive Reader

aivan3 [116]

5a-10=4a+8

5a-4a=8+10

a=18

3 0

3 years ago

If Tanisha has $1000 to invest at 7% per annum compounded semiannually, how long will it be before she has $1600? If the co

Sphinxa [80]

Answer:

Using continuous interest 6.83 years before she has $1600.

Using continuous compounding, 6.71 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 unit year and t is the time in years for which the money is invested or borrowed.

Continuous compounding:

The amount of money earned after t years in continuous interest is given by:

$P(t) = P(0)e^{rt}$

In which P(0) is the initial investment and r is the interest rate, as a decimal.

If Tanisha has $1000 to invest at 7% per annum compounded semiannually, how long will it be before she has $1600?

We have to find t for which $A(t) = 1600$ when $P = 1000, r = 0.07, n = 2$

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

$1600 = 1000(1 + \frac{0.07}{2})^{2t}$

$(1.035)^{2t} = \frac{1600}{1000}$

$(1.035)^{2t} = 1.6$

$\log{1.035)^{2t}} = \log{1.6}$

$2t\log{1.035} = \log{1.6}$

$t = \frac{\log{1.6}}{2\log{1.035}}$

$t = 6.83$

Using continuous interest 6.83 years before she has $1600

If the compounding is continuous, how long will it be?

We have that $P(0) = 1000, r = 0.07$

Then

$P(t) = P(0)e^{rt}$

$1600 = 1000e^{0.07t}$

$e^{0.07t} = 1.6$

$\ln{e^{0.07t}} = \ln{1.6}$

$0.07t = \ln{1.6}$

$t = \frac{\ln{1.6}}{0.07}$

$t = 6.71$

Using continuous compounding, 6.71 years.

7 0

4 years ago

Giving brainliest for correct answer !!

MrMuchimi

Answer:

the 2nd and 5th one

Step-by-step explanation:

14 < n-3

add 3 to each side

14+3=17

-3+3 cancels out

we're left with 17<n

thus meaning the second and fifth one are correct

6 0

3 years ago

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How to divided 4 and 2/4

Lelu [443]

Answer:

8

Step-by-step explanation:

turn 2/4 into fraction by dividing 2 by 4 equals to 0.5 then divide 4 by 0.5 equals <u><em>8</em></u>

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3 years ago

How to solve this equation-1/3m-7=5

Brilliant_brown [7]

-1/3 m = 5+7
-1/3m=12
m= -36

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4 years ago

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