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Rainbow [258]
3 years ago
9

How do you know if a number is rational or irrational

Mathematics
2 answers:
Anna11 [10]3 years ago
5 0

A rational number is, as the name implies, any number that can be expressed as a ratio, or fraction.An irrational number can be written as a decimal, but not as a fraction.

Kay [80]3 years ago
4 0

A rational number is a number that is not repeating. So a rational number can be 5 or 2.3314. But Pi is irrational. So is 1/3 and 2/3 because in decimal form they are repeating. Which means they will go on forever which makes them irrational.

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Find the exact area of the shaded region. A. 16π−8 cm² B. 42.3 cm² C. 92.5 cm² D. 84.6 cm2
Anika [276]

Answer:

A = (16π - 8) cm^2

Step-by-step explanation:

The shaded area is trhe area of the circle minus rthe area of the truiangle,.

A = πr^2 - bh/2

A = π(4 cm)^2 - (4 cm)(4 cm)/2

A = 16π cm^2 - 8 cm^2

A = (16π - 8) cm^2

5 0
3 years ago
A conical perfume bottle has a radius of 3.4 centimeters and a height of 4.8 centimeters . Using 3.14 for pi, approximately how
Ghella [55]

Answer:

58.077 cubic cm

Step-by-step explanation:

Given that:

  • height : 4.8 cm
  • radius: 3.4 cm

As we know that, the volume of a conical perfume bottle is as following:

V = (1/3) * π * r² * h

So perfume can the bottle hold is:

V = (1/3) * 3.14 * 3.4² * 4.8 = 58.077 cubic cm

Hope it will find you well

5 0
4 years ago
Read 2 more answers
So I finished the graph, But I need help making the table please help whoever answers correctly, I will mark brainliest 10. Corn
Monica [59]

Answer:

Here it is. The table is on the first one at the bottom.

Step-by-step explanation:

4 0
3 years ago
There are 48 students in a certain class, 25% of this are girls, How many<br> boys are in the class?
miskamm [114]

Answer:

There are 36 boys

Step-by-step explanation:

4 0
3 years ago
2.5 kg of potatoes cost £1.40<br> Work out the cost of 4.25 kg of potatoes.<br> 5.95
kvasek [131]

Answer:

£2.38

Step-by-step explanation:

Write and solve an equation of ratios:

 £1.40       2.5 kg

----------- = ------------

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Cross multiplying, we get:

(£1.40)(4.25 kg) = (2.5 kg*c), or

       (£1.40)(4.25 kg)

c = -------------------------- =  £2.38

             2.5 kg

4 0
3 years ago
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