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3 years ago

How do you write 72% as a fraction and as a decimal?

Mathematics

2 answers:

statuscvo [17]3 years ago

8 0

72% as a decimal is 0.72.

72% as a fraction is 72/100 = 18/25.

Lina20 [59]3 years ago

7 0

Think of 72% as 72.0% and then move the decimal point to the left two spaces (this applies to all percentages) which results in .72, and there you have your answer to the decimal. Then, you can convert the decimal to a fraction by writing .72/1 which is 72/100. Then simplify the fraction (if possible) to get 18/25.

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In a class of 55 21 study physics 24 study geography and 23 study economics and physics. if x students study all three subjects

Rus_ich [418]

The total number of students who studied only two subjects is 13.

The given parameters:

Total number of students, n = 55
Number of physics students = 21
Number of geography students = 24
Number of economics students = 23
Number of students for the 3 subjects, = x
Number of students who studied non = 2x

The number of students who studied only two subjects can be determined by applying overlapping three sets formula as shown below;

$Total = n(phy) + n(geo) + n(econ) + n(none)- n(double) - 2(all \ subjects)\\\\55 = 21 + 24 + 23 + 2x-n(double) - 2(x)\\\\55 = 68- n(double)\\\\n(double) = 68-55\\\\n(double) = 13$

Thus, the total number of students who studied only two subjects is 13.

Learn more about overlapping three sets here: brainly.com/question/2041029

3 0

2 years ago

PLZ HELP omg

Mandarinka [93]

Answer:

1.75 hours and 2 Hours

Step-by-step explanation:

6 0

4 years ago

FInd the length of DB and CD. Please help!

Lerok [7]

Step-by-step explanation:

DB length = 5 1/4 + 2/3

=21/4 + 2/3

= 63/12 + 8/12 = 71/12

CD length = 5 1/4 -2 = 3 1/4

3 0

3 years ago

The function f(t)=-5t^2+15t+50 models the approximate height in feet of an object t seconds after it is launched. how many secon

Cloud [144]

F(t) can be factored to find the zeros.
.. f(t) = -5(t -5)(t +2) . . . . f(t) = 0 for t=-2, t=5

The object hits the ground after 5 seconds.

4 0

3 years ago

Please explain how to do and set up

In-s [12.5K]

using the Cosine rule in ΔSTU

let t = SU, s = TU and u = ST, then

t² = u² + s² - (2us cos T )

substitute the appropriate values into the formula

t² = 5² + 9² - (2 × 5 × 9 × cos68° )

= 25 + 81 - 90cos68°

= 106 - 33.71 = 72.29

⇒ t = $\sqrt{72.29}$ ≈ 8.5 in → A

6 0

3 years ago