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borishaifa [10]
3 years ago
11

Calculate the Simple Interest on $12000 for 15 years at 12 1/2% per annum

Mathematics
1 answer:
Igoryamba3 years ago
3 0

Answer:

$22500

Step-by-step explanation:

principal=$12000

time=15 years

rate=12\frac{1}{2}

=12*2+1/2

=25/2

=12.5

Interest=PTR/100

=$12000*15*12.5/100

=$2250000/100

=$22500

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Q26. Division A has 15 students and division B has 20 students. Average score of students in division A is greater by 2 as compa
Romashka [77]

Step-by-step explanation:

Let a be the total score of Div. A

Let b be the total score of Div. B

given,

\frac{a}{15}  -  \frac{b}{20}  = 2

as equation 1.

and

b - a = 160 \\  - a + b = 160

as equation 2.

Now multiply equation 2 by 1/20 to eliminate b to solve for a.

( - a)( \frac{1}{20} ) + (b)( \frac{1}{20} )  = ( \frac{1}{20} )(160) \\  -  \frac{a}{20}  +  \frac{b}{20}  = 8

take this new equation as equation 3.

now we will use equation 1 + equation 3 to eliminate b to solve for a.

( \frac{a}{15}  + ( -  \frac{a}{20} )) + (  - \frac{b}{20}  +  \frac{b}{20} ) = 2  +  8 \\  \frac{a}{60}  =  10 \\ a = 60 \times 10 \\  = 600

Div.A total score = 600

Average Score = Total Score / Number of students.

\frac{600}{15}  \\  = 40

3 0
3 years ago
One group, which contains 28 dogs, averages 20.5 inches. Another group that contains 19 dogs, averages 32.1 inches.
gtnhenbr [62]

Answer:

The average height of poodles in your kennel is 25.19 inches.

Step-by-step explanation:

This is a weighed average problem.

To find the weighed average, we sum each value of the set multiplied by it's weight, and then we divide by the sum of the weights.

In this problem, we have that:

Average 20.5 inches has weight 28.

Average 32.1 inches has weight 19.

What is the average height of poodles in your kennel?

A = \frac{32.1*19 + 20.5*28}{19+28} = \frac{1183.9}{47} = 25.19

The average height of poodles in your kennel is 25.19 inches.

4 0
4 years ago
Fireworks are shot upward at a speed of
wel

Answer: A fireworks shell is shot straight up with an initial velocity of 80 feet per second. Its height s after t seconds is given by the equation

s = 80t − 16t2.

Step-by-step explanation:

4 0
3 years ago
miles bought 3.75 acres of land in 1993 in 1997 he bought enough land to double his property then in 2001 miles was forced to se
MariettaO [177]
3.45 acres
solution :
3.75+3.75= 7.5
7.5-2.9 = 4.6
4.6×.25= 1.15
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6 0
3 years ago
Y = f(x) = 2x<br> Find f(x) when x = 1.<br> Enter the correct answer.
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Answer:

2

Step-by-step explanation:

4 0
4 years ago
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