Which of these numbers is NOT an integer: -31 , 74 , 22.5 , -7 , or 19?

Mathematics

1 answer:

SVETLANKA909090 [29]3 years ago

3 0

22.5 is your answer

Integers have to be whole numbers, and 22.5 is not a whole, for .5 is a part.

hope this helps

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A hose dispenses 1,413 cm³ of water every minute into a cone with a radius of 60 cm and a height of 150 cm. How long will it tak

sergejj [24]

Hm. Have you ever dispensed water from a hose unto a cone? I know I haven’t, but math can give us a good idea of what it would be like — or at least, how long it would take.

We are told that the hose spills 1413 cm^3 of water every minute. We are also told the cone has a height of 150 cm and a radius of 60 cm. So far, so good.

First things first, we need to find out how much water can fit in the cone. That means volume. The volume of a cone is

π • r^2 • (h/3)

Let’s go ahead and plug in (remember we use 3.14 for π)

(3.14) • (60)^2 • (150/3)

The volume of the cone is 565,200 cm^3

Wait, I’m lost. What were we supposed to do again? Oh, right. We needed to find how long it would take for the hose to fill in the cone. Well, if we know the hose dispenses 1413 cm^3 per minute, and there is a total of 565,200 cm^3 the cone can take, we can divide the volume of the cone by the amount the hose dispenses per minute to get the number of minutes it’d take to fill it.

565200/1413

400 minutes. Wow, ok. I wouldn’t want to wait that long. That’s like watching 3 movies!

7 0

3 years ago

Write all the names that apply to each number .

sasho [114]

Definitions:
1. A real number can be represented on a number line.
2. A rational number can be represented as a fraction, with both the numerator and denominator as integers. The denominator cannot be zero.
3. An irrational number has decimals that go on indefinitely.
4. An integer is a real number that is countable.
5. A repeating decimal has a group of numbers that repeat indefinitely as decimals.
6. A complex number involves the use of the quantity i, defined as i² = -1.

Answers:
a. 7/8
Real, Rational.

b. √36
Real, Rational because its value is +6 or -6.

c. √24
Real, Irrational.

d. 0.75
Real, rational because 0.75 = 3/4.

e. 0
Real, rational

f. √(-100)
Complex, because √(-1) * √100 = +/- i√100

g. $5.\overline{45}$
Irrational, Repeating decimal because
$5.\overline{45} = 5.4545454545 ...$

h -18/6
Real, Integer, Rational because -18/6 = -3.

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3 years ago

a bottle of cologne comes in a cube shaped box that has a volume of 64 cubic inches what is the length of one side of the box

Ne4ueva [31]

The answer is 4 Inches!

The question let's us know our box is a cube, so all sides are equal length.

So from there it's just figuring out what number cubed will equal 64. Let's say a will represent one side.

a³=64

a=∛64

a=4

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4 years ago

PLEASE HELP WITH AN EXPLANATION.

Paladinen [302]

111/210 = about 53%. 52.85714% of 903 is 477.3 students. of course you can't have a fraction of a student so it is 477 students

7 0

3 years ago

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Pavlova-9 [17]

I’m pretty sure that it is b

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3 years ago

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