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2 years ago

The percent of 3.5% of 400

Mathematics

1 answer:

Alika [10]2 years ago

8 0

Answer:

Step-by-step explanation:

(3.5 ÷ 100) × 400 = 14

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I spent 80% of my money and had $12 left. How much money did I have to start ?

xeze [42]

If you spent 80% that means you have 20% left, we'll use B as variable

20% x B = 12
0.20/0.20 x B = 12/0.20
B = 60

6 0

3 years ago

An object is dropped from 43 feet below the tip of the pinnacle atop a 527-ft tall building. The height h of the object after t

Marizza181 [45]

Answer:

5.5 seconds

Step-by-step explanation:

The function that gives the height of the object after t seconds falling is:

h = -16t^2 + 484.

To find the time when the object reaches the ground, we just need to use the value of h = 0 in the equation, and then find the value of t:

0 = -16t^2 + 484.

16t^2 = 484

t^2 = 30.25

t = 5.5 seconds

So the object will reach the ground after 5.5 seconds

5 0

2 years ago

Read 2 more answers

What is the interquartile range (IQR) of the following data set?

OleMash [197]

Answer:

Step-by-step explanation:

Arrange data set

19, 4, 17, 3, 6, 5,5, 3, 11, 12, 3, 7, 15, 8, 8, 10,5, 3, 12, 41, 36

in ascending order

3, 3, 3, 3, 4, 5, 5, 5, 6, 7, 8, 8, 10, 11, 12, 12, 15, 17, 19, 36, 41

The median is $Q_2=8$

$Q_1=\dfrac{4+5}{2}=4.5$

$Q_3=\dfrac{12+15}{2}=13.5$

Thus, the interquartile range is

$Q_3-Q_1=13.5-4.5=9$

4 0

3 years ago

A number is 2/3 if another number. the sum of the numbers is 50. find the numbers

slava [35]

A number is 2/3 of another number. Both added together equals 50.

One of these numbers consists of three parts, and the other consists of two of those three parts. So, there are 5 equal parts in total.

Thus we need to divide 50 by 5. 50 divided by 5 equals 10.

The first number, which has three parts, is 30. The second number, which as two parts, is 20.

I hope this makes sense to you. :D Good luck in all your studies!

3 0

3 years ago

What is 23% of 256? please help

Anastasy [175]

So first you need to turn the percent into a decimal. So 23% would be 0.23 because you divide 23 by 100 to turn it into a decimal. Now you multiply 0.32 and 256. So:

$0.23 *256=58.88$

So your answer would be 23% of 256 is 58.88. I hope this helps! =)

7 0

3 years ago