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3 years ago

10

At what interest rate (to the nearest hundredth of a percent) compounded annually will money in savings double in five years?

1 answer:

Sphinxa [80]3 years ago

5 0

For a single payment with compound interest, the equation to use is F=P(1+i)^n where F is the value after n periods, P is the present value, and i is the interest rate.

If we want the final value F to double in 5 years, F is then equal to P then n=5. The equation is now:

2P=P(1+i)^5
2=(1+i)^5
i=14.87% per year

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The coordinates of a point on a coordinate grid are (−2, 6). The point is reflected across the x-axis to obtain a new point. The

cluponka [151]

The reflection across the x-axis only change the signal of the y coordinate. Hence, the new point is $P'(-2,-6)$ .

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3 years ago

Please help. Write as a single logarithm, a) log(13)+log(4) b) log(small 5)(14)-log(small 5)(2)

dsp73

Answer:

a) $\log 52$

b) $\log_57$

Step-by-step explanation:

Use logarithm properties:

$\log_ab+\log_ac=\log_a(b\cdot c)\\ \\\log_ab-\log_ac=\log_a\dfrac{b}{c}$

Then

a) $\log 13+\log 4=\log 13\cdot 4=\log 52$

b) $\log_514-\log _52=\log _5\dfrac{14}{2}=\log _57$

7 0

3 years ago

Got It? Do these problemst

dedylja [7]

I did where you subtract 4 from both sides then divide 2 from 4 and you get 0.5 as x for your answer but im not sure

6 0

2 years ago

Find the value of<br> 3a²-4ab-26² when A= -1 and b-4

nata0808 [166]

Answer:

-657

Step-by-step explanation:

$a= -1\\b= 4\\$

Substituting the value of a and b

$3a^{2}-4ab-26^{2} \\3(-1)^{2} -4(-1)(4)-676\\3-4(-4)-676\\3+16-676\\19-676\\-657$

The value of 3a²-4ab-26² is -657

4 0

3 years ago

8. Don made deposits of $500 at the end of each year for eight years. The rate is 8% compounded annually. Using the tables found

Sonbull [250]

Answer:

Step-by-step explanation:

P = $ 500 ;r =8% ; n= 8

A = P* (1+r/100)^n

A= 500 * ( 1 + 8/100)⁸

= 500 * ( 1 + 0.08)⁸ = 500 * 1.08⁸

=500*1.85

= $ 925.45

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2 years ago