All categories

2 years ago

PLEASE HELP! Which number is a rational number?

Mathematics

1 answer:

8090 [49]2 years ago

8 0

Answer:

C. 17.156

Step-by-step explanation:

A rational number is any integer, fraction, terminating decimal, or repeating decimal. It can be expressed as a ratio of two integers.

The first answer wouldn't make sense, because there is no number times itself that would equal 15. Therefore, it would be irrational. Same goes with the last option.

We can also automatically rule out the second option because it is a nonterminating decimal.

You might be interested in

The sum of four consecutive numbers is 230. What is the largest of these numbers

vodka [1.7K]

Answer:

n + n+1 + n+2 + n+3 = 230

4n = 224

n = 56 and largest number = 59

Step-by-step explanation:

7 0

2 years ago

Lowest common multiple of 4 and 10

atroni [7]

Answer: 20

Step-by-step explanation:

2^2=4

5*2=10

2^2 and 5 would be multiplied

8 0

2 years ago

Read 2 more answers

Determine the mass of a solid steel ball that has a diameter of 10 cm. The density of pure steel is 8.09 g/cm3

Basile [38]

Answer:

<em>The mass of the steel ball is 4,235.9 gr</em>

Step-by-step explanation:

<u>Density</u>

The density ρ of a substance is a measure of its mass per unit volume:

$\displaystyle \rho=\frac{m}{V}$

If the density and the volume are given, the mass can be calculated by solving the above formula for m:

$m=\rho.V$

We know the density of pure steel ρ=8.09 gr/cm3 and the diameter of a solid steel ball d=10 cm.

We need to calculate the volume of the sphere:

The volume of a sphere of radius r is given by:

$\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3$

The radius is half the diameter: r= 10/2 = 5 cm. Thus:

$\displaystyle V=\frac{4}{3}\cdot \pi\cdot 5^3$

Calculating:

$V=523.6\ cm^3$

The mass is:

$m=8.09 gr/cm^3 \cdot 523.6\ cm^3$

m=4,235.9 gr

The mass of the steel ball is 4,235.9 gr

4 0

2 years ago

Joe’s hat shack has fixed cost of $1,000 per week. She buys hats that are $1,500 for 300 hard and she sells the hats for $12.50

katrin [286]

1000+1500=2500 is how much she owes right now
If each hat is sold for 12.50, all you have to do is 2500/12.50=200
She needs to sell 20 hats to break even.

4 0

2 years ago

Please help me fine the volume of this shape please please

olga_2 [115]

Answer:

I used the calculator, so the answer may or,may not be, 125126.4

7 0

1 year ago