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scoray [572]
3 years ago
7

Is -√15 irrational or rational

Mathematics
1 answer:
Nataly [62]3 years ago
6 0
Answer: it is irrational.

Explanation:

Square root that are not perfect square are considered irrational as sqrt(15) isn’t a perfect square thus it’s irrational.
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Ray Of Light [21]
Thank you for posting your question here at brainly. The choices based on the above question are the below, it can be found elsewhere. 

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6 0
3 years ago
Read 2 more answers
Let f(x) = 2x+4. If f(x) = 16, find x.
jeyben [28]

f(x)=2x+4

And we are given that f(x)=16 and want to find the value of x. Set f(x) to 16 and we get the equation:

2x+4=16

Subtract both sides by 4

2x=12

Divide both sides by 2

x=6

This is the answer. Let me know if you need any clarifications, thanks!

8 0
3 years ago
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If you have an old fish tank in the form of a circular cylinder and it is 2 feet in diameter and 6 feet tall, how many cubic fee
yuradex [85]

Answer:

The old fish tank hold <u>18.84 cubic feet</u> of water.

Step-by-step explanation:

Given:

An old fish tank in the form of a circular cylinder and it is 2 feet in diameter and 6 feet tall.

Now, to find the cubic feet of water the fish tank hold.

Dimensions of old fish tank are:

<em>Diameter is 2 feet so. we find the radius first.</em>

Radius (r) = \frac{Diameter}{2}=\frac{2}{2}=1\ feet.

Height (h) = 6\ feet.

Now, to get the cubic feet off water the tank hold we put formula:

<u><em>(Taking the value of π as 3.14.)</em></u>

Volume=\pi r^2h\\\\Volume=3.14\times 1^2\times 6\\\\Volume=3.14\times 1\times 6\\\\Volume=18.84\ cubic feet.

Therefore, the old fish tank hold 18.84 cubic feet of water.

7 0
3 years ago
The solution to -16 + x = -30 is -14.<br><br><br> True False
11111nata11111 [884]

Answer:

false

Step-by-step explanation:

7 0
3 years ago
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Write 9x - 8 as a verbal expression <br><br> Please the fast as possible!
Natalka [10]

Answer:

8 subtracted from the product of 9 and x

Hope this helps!

4 0
3 years ago
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