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Paha777 [63]
3 years ago
9

15% of 20 is ____ find the percentage of the number

Mathematics
2 answers:
Aliun [14]3 years ago
6 0
The answer is 3, just do 20*0.15 (covert 15% into a decimal).
Allisa [31]3 years ago
5 0

Answer:

3

Step-by-step explanation:

x              15

------  =   -----

20          100

20x5 is 100

What times 5 is 15? 3

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zvonat [6]

Answer:

Step-by-step explanation:

1) For each situation to grow or decay by a constant percent rate, it must be exponential. Therefore, the correct examples are

A. The number of cars sold doubles every year. It is a 200% growth every year.

D. Each time you start a car engine the remaining engine life decreases by 0.0075%. A case of decay

E. The number of people creating cat videos increases by 15% percent every year.

F. Computer technology increases by a factor of 3 every five years.

2) this is a case of exponential decay. The expression for exponential decay is

y = b(1 - r)^t

y = final value

b = initial value

r = decay rate

t = time

Given that

r = 10% = 10/100 = 0.1

b = 50 kilograms

y = W kilograms

The relationship is

W = 50(1 - 0.1)^t

W = 50(0.9)^t

3 0
3 years ago
The area of a rectangle is 30 square root 3750 square inches, and the length is 3 square root 250 inches what is the width of th
Ann [662]

Answer:

width=10\sqrt{15}\ in

Step-by-step explanation:

-A rectangle's area is given by:

A=lw\\\\l=length\\w=width

Given A=30\sqrt{3750} and l=3\sqrt{250}, we substitute in the formula to solve for the width as follows:

A=lw\\\\30\sqrt{3750}=3\sqrt{250}\times w\\\\w=\frac{30\sqrt{3750}}{3\sqrt{250}}\\\\w=10\frac{\sqrt{3750}}{\sqrt{250}}\\\\=10\times \sqrt{\frac{3750}{250}}\\\\=10\sqrt{15}\ in

Hence , the rectangle's width is 10\sqrt{15}\ in

6 0
3 years ago
I need help is it a active scalene triangle yes or no?
mina [271]
No it is not. that is a right scalene triangle. Acute triangle has three angles less than 90.
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Samuel is in charge of ordering lunch..
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Answer:

A

Step-by-step explanation:

This is the answer because the others don't make sense to me at all...

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3 years ago
What is the midpoint of -5,2 and 1,5
ANEK [815]

Answer:(-2,3.5)

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