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ycow [4]
3 years ago
11

Raul deposited $3000. Into a checking account that earned simple interest rate each year. After 3.5 years he earned $262.50 in i

nterest. If no money was deposited or withdrawn from the account what was the annual interest rate?
Mathematics
1 answer:
Vesna [10]3 years ago
4 0
Answer is 6.25 percent per year.
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HELP!!! 20 POINTS!!! URGENT!!!
VashaNatasha [74]

We know that :

\clubsuit  ln(A) - ln(B) = ln(\frac{A}{B})

\clubsuit  aln(x) = ln(x)^a

\clubsuit  ln(A) + ln(B) = ln(AB)

Using above ideas we can solve the Problem :

⇒ \frac{3}{8}ln(x + 3) = ln(x + 3)^\frac{3}{8}

⇒ ln(x - 3) - ln(x + 3)^\frac{3}{8} = ln[\frac{(x - 3)}{(x + 3)^\frac{3}{8}}]

⇒ 4ln[\frac{(x - 3)}{(x + 3)^\frac{3}{8}}] = ln[\frac{(x - 3)}{(x + 3)^\frac{3}{8}}]^4 = ln[\frac{(x - 3)^4}{(x + 3)^\frac{3}{2}}]

⇒ \frac{1}{3}lnx + ln[\frac{(x - 3)^4}{(x + 3)^\frac{3}{2}}] = ln(x)^\frac{1}{3} + ln[\frac{(x - 3)^4}{(x + 3)^\frac{3}{2}}] = ln[\frac{\sqrt[3]{x}(x - 3)^4}{\sqrt{(x + 3)^{3}}}]

Option 3 is the Answer

8 0
2 years ago
Pls help asap!! this is due really soon
s2008m [1.1K]

Answer:

EF=20

Step-by-step explanation:

EF is midsegment of the triangle so the equation is

AB/2=EF

7x-2/2=2x+8

7x-2=4x+16

7x-4x=16+2

3x=18

x=18/3

x=6

EF=2×6+8

=12+8

=20

6 0
2 years ago
Robinson's doughnut factory produces 18,000 doughnuts every day. they have a fleet of 12 delivery trucks. if the doughnuts are d
nikdorinn [45]
1,500 doughnuts will be added onto each truck. To get this answer, just simply divide the amount of doughnuts by the amount of trucks.

18,000÷12= 1,500.

Hope this helps!
6 0
2 years ago
Read 2 more answers
What is 6(-7+6i)(-4+2i)?
cricket20 [7]
6-2-1=185666iiiiy6663636
4 0
3 years ago
#3 AB and AD are tangent to the circle centered at point C. Find the value of x. *
dezoksy [38]

Answer:

x=4

Step-by-step explanation:

tangent lines from the same point to a circle are congruent in length, so we can say that

5x+8 = 8x-4

5x -5x +8 = 8x - 5x -4

8 = 3x - 4

8+4 = 3x -4 + 4

3x = 12

3x/3 = 12/3

x=4

8 0
3 years ago
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