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Fed [463]
3 years ago
10

In what time a certain sum of money will be 2.5 times at 10% rate of interest

Mathematics
1 answer:
WITCHER [35]3 years ago
5 0

Answer:

Step-by-step explanation:

It takes 15 years to get 2.5 times the sum at 10% p.a.

Let the principal be 'P'.

Let the amount be '2.5P'

Rate = 10%

Amount = Principal - Interest

2.5 P = P - Interest

Interest = 1.5 P

So, we get that

1.5P =\frac{P*R*T}{100} \\1.5 * 100 = 10 * T\\T = 15 years

hope it helps :)

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latrell wants to keep his test average in his class at 85 or higher. so far, he has earned score of 85, 76, 94 and 81 on his tes
Lena [83]

Answer:

89

Step-by-step explanation:

Use the mean formula, mean = sum of elements / number of elements.

He wants to keep his average at 85 or higher, so plug in 85 as the mean. Let x represent the score he has to get, and solve for x:

mean = sum of elements / number of elements.

85 = (85 + 76 + 94 + 81 + x) / 5

85 = (336 + x) / 5

425 = 336 + x

89 = x

So, he has to get a 89.

7 0
3 years ago
The area of a room is 234 square feet the length of the room is 18 feet what is the width in feet of the room
tester [92]

Answer:

The width of the room is 13\ ft

Step-by-step explanation:

we know that

The area of rectangle (area of the room) is equal to

A=LW

we have

A=234\ ft^{2}

L=18\ ft

substitute the values in the formula and solve for W

234=18W

W=234/18

W=13\ ft

4 0
3 years ago
{[(9 + 5) ÷ 7] - 2} x [4 x (25 – 20)]
kicyunya [14]

Answer:

The answer is 0.

Step-by-step explanation:

solve 9+5=14

14/7=2

2-2=0

solve the pther side

25-20=5

4*5=20

0*20=0

5 0
3 years ago
Approximtely how many 27cubic volume cabinets will a container98,000cbic volume hold?
babymother [125]

Answer: 3630

Step-by-step explanation:

Given that:

Volume of container = 98,000 cubic volume

Volume of cabinet = 27 cubic volume

The number of cabinets which the container will. Hold equals:

Volume of container / volume of cabinet

= 98000 cubic volume / 27 cubic volume

= 3629.6296

The container will hold approximately 3630 27 cubic volume of cabinet.

5 0
3 years ago
If the sin of angle x is 4 over 5 and the triangle was dilated to be two times as big as the original, what would be the value o
beks73 [17]

Answer:

Sin of x does not change

Step-by-step explanation:

Whenever a triangle is dilated, the angle remains the same as well as the ratio for sides of triangle. For smshapes with dimensions, when shapes are dilated the dimensions has increment with common factor.

From trigonometry,

Sin(x)=opposite/hypotenose

Where x=4/5

Sin(4/5)= opposite/hypotenose

But we were given the scale factor of 2 which means the dilation is to two times big.

Then we have

Sin(x)=(2×opposite)/(2×hypotenose)

Then,if we divide by 2 the numerator and denominator we still have

Sin(x)=opposite/hypotenose

Which means the two in numerator and denominator is cancelled out.

Then we still have the same sin of x. as sin(4/5)

Hence,Sin of x does not change

4 0
3 years ago
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