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ladessa [460]
3 years ago
5

Ari borrowed $20000 and paid it back over 6 years. The simple interest rate was 15% annually. How much interest did Ari pay over

the six years? Pls explain, and I will make brainliest
Mathematics
2 answers:
Paladinen [302]3 years ago
4 0
It would cost $18,000
20,000 x 0.15 = 3,000
3,000 x 6 = 18,000
Ber [7]3 years ago
3 0

Answer:

$18,000

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 15%/100 = 0.15 per year,

then, solving our equation

I = 20000 × 0.15 × 6 = 18000

I = $ 18,000.

The simple interest accumulated

on a principal of $ 20,000.

at a rate of 15% per year

for 6 years is $ 18,000.

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Which of the following is the complete list of roots for the polynomial function f(x)(x^2+2x-15)?–5, 3 –5, 3, –4 + i, –4 – i –5,
Advocard [28]
Hey there !

Check the attachment.
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5 0
3 years ago
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Find the dimensions of the shaded region so that its area is maximized.<br> x=<br> y=
musickatia [10]
1.  Find the equation of the line AB.  For reference, the answer is y=(-2/3)x+2.
2.  Derive a formula for the area of the shaded rectange.  It is A=xy (where x is the length and y is the height).
3.  Replace "y" in A=xy with the formula for y:  y= (-2/3)x+2:
       
                 A=x[(-2/3)x+2]    This is a formula for Area A in terms of x only.
4.  Since we want to maximize the shaded area, we take the derivative with respect to x of    A=x[(-2/3)x+2] , or, equivalently, A=(-2/3)x^2 + 2x.
This results in   (dA/dx) = (-4/3)x + 2.
5.  Set this result = to 0 and solve for the critical value:  

(dA/dx) = (-4/3)x + 2=0, or (4/3)x=2   This results in x=(3/4)(2)=3/2

6.  Verify that this critical value x=3/2 does indeed maximize the area function.
7.  Determine the area of the shaded rectangle for x=3/2, using the previously-derived formula          A=(-2/3)x^2 + 2x.

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3 0
3 years ago
What is 68% as a fraction
alukav5142 [94]

Answer:

fraction

3/4

decimal's

0.68

that's my answer please have a great day

8 0
2 years ago
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Maximizing revenue. Edwards University wants to determine what price to charge for tickets to football games. At $18 per ticket,
Papessa [141]

Answer:

New price is $12.75

New attendance is 57500

Step-by-step explanation:

For starters, we use the relation.

18 - 3x

Since we don't know the number of times we're expected to deduct $3 from the price.

Again, we have 40000 + 10000x on another hand. Question says to add 10000 people everytime $3 is deducted.

Since (40000 + 10000x) is the number of people, we multiply it by $4.50, the average amount each person spends is then gotten to be

(18 - 3x) (40000 + 10000x) + (40000 + 10000x) (4.5) = 0

Expanding the bracket, we have

[720000 + 60000x - 30000x²] + [180000 + 45000x] = 0, solving further, we have

900000 + 105000x - 30000x² = 0 or

-30000x² + 105000x + 900000 = 0

Then, we find the maximum of a quadratic, by finding the axis of symmetry. Use x = -b/2a

x = -105000 / 2 * -30000

x = -105000 / -60000

x = 1.75

From our earlier equations, the new price then is

18 - 3(1.75) = 18 - 5.25 = $12.75

The new attendance also is

40000 + 10000(1.75) =

40000 + 17500 = 57500

7 0
3 years ago
Solve pls brainliest
Natalija [7]
Answer:

1/4 - 1/8 = 2/8 - 1/8 = 1/8
5 0
3 years ago
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