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arsen [322]
3 years ago
9

The simple interest on a certain sum of money is 3/8 of the the sum after 6 1/4 years. Find the the rate per cent charged.

Mathematics
1 answer:
Masja [62]3 years ago
3 0
Time= 6 1/4= 25/4
Principal- Rs x
Rate=?
Rate=100 * Simple Interest
Rate= 100*3x*4 divided by x*8*25
Rate=6%
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A semi circle has a radius 8.2 cm
zaharov [31]

Answer:

Step-by-step explanation:

Area=\frac{1}{2}*\pi *r^{2}\\\\=\frac{1}{2}*3.14*8.2*8.2\\\\=3.14*4.1*8.2\\

= 105.57

= 105.6 cm²

5 0
3 years ago
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A person x inches tall has a pulse rate of y beats per​ minute, as given approximately by yequals600 x Superscript negative 1 di
tankabanditka [31]

Answer:

a) 5.13beats/min

b) 2.82 beats/min

Step-by-step explanation:

Given the pulse rate of a person modelled by the equation y = 600x^-1/3 for 30≤x≤75

If the height is 39inches, the instantaneous rate of change of pulse rate for the heights will be expressed as;

y = 600(39)^-1/3

y = {600(1/39)}/3

y = 600/39×3

y = 600/117

y ≈ 5.13beats/min

The instantaneous rate for a 39 inches tall person is 5.13 beats per min

b) For a 71inches tall person, the beat rate will be expressed as;

y = 600(71)^-1/3

y = {600(1/71)}/3

y = 600/71×3

y = 600/213

y ≈ 2.82 beats per minute

The instantaneous rate for a 71 inches tall person is 2.82 beats per min

7 0
3 years ago
In a right triangle one acute angle measures 48 more than 2 times the other. If the sum of the measure of the two acute angles m
Ainat [17]

A given angle measures 90°.. Then, note that the total measurement of the triangle is 180°... Subtract 180° by 90°, and the other angles must add up to 90°!  

Good luck!


3 0
3 years ago
Please and thank you to whoever helps
Zepler [3.9K]

Answer:

  1131.0 m³

Step-by-step explanation:

Using the formula for the volume of a cylinder, fill in the appropriate values and do the arithmetic.

  V = πr²h

Since this formula needs the radius of the cylinder and you are given the diameter, you must divide the diameter by 2 to get the radius:

  r = d/2 = (12 m)/2 = 6 m

Then the volume is ...

  V = π(6 m)²(10 m) = 360π m³ ≈ 1131.0 m³ . . . . . rounded to tenths

8 0
3 years ago
Can some one please help me ???!
Sedaia [141]
45 = 3x3x5
Or you could simplify it to 3^2x5
4 0
3 years ago
Read 2 more answers
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