2 years ago

Is the square root of 1/9 rational or irrational

Mathematics

2 answers:

Naya [18.7K]2 years ago

8 0

Answer:

Rational

Step-by-step explanation:

A rational number can be expressed in the form

$\frac{a}{b}$ , where a and b are integers

$\sqrt{\frac{1}{9} }$ = ± $\frac{1}{3}$ ← rational numbers

lyudmila [28]2 years ago

5 0

The square root of 1/9 is 1/3 and it is a Rational Number.

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What is the scale factor of two similar pyramids with volume of 13824 cubic feel and 216 cubic feet?

velikii [3]

Answer: The scale factor is 4

Step-by-step explanation:

We know that the pyramids are similar. The volume of one of these pyramids is 13,824 cubic feet and the volume of the other one is 216 cubic feet. Then:

$V_1=13,824ft^3\\V_2=216ft^3$

By Similar solids theorem, if two similar solids have a scale factor of $\frac{a}{b}$ , then corresponding volumes have a ratio of $\frac{a^3}{b^3}$

Then:

$\frac{V_1}{V_2}=\frac{a^3}{b^3}$

Knowing this, we can find the scale factor. This is:

$\frac{13,824}{216}=\frac{a^3}{b^3}\\\\\frac{13,824}{216}=(\frac{a}{b})^3\\\\\frac{a}{b}=\sqrt[3]{\frac{13,824}{216}}\\\\scale\ factor=\frac{a}{b}=4$

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2 years ago

Which statement best describes how to determine wether f(x)=x4-x3 is even a function

egoroff_w [7]

X4-x3=1 -4+3
×4 +3
×=1

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2 years ago

1,13, 19..<br> Arithmetic, geometric, or neither

rosijanka [135]

Answer:

Neither.

Step-by-step explanation:

13 - 1 = 12 and 19 - 13 = 6 - no common difference so its not Arithmetic.

13/1 = 13 and 19/13 = 1.46 - no common ratio so its not Geometric.

4 0

2 years ago

Which polynomial has factors of 4x – 7 and x + 4?

34kurt

B. because when you multiply the factors they will get B

6 0

3 years ago

Read 2 more answers

The functions q and r are defined as follows.

Harrizon [31]

G(2)= -2-2
g(2)= -4

r(g(2))= r(-4)
r(-4)= 2(-4)^2 -1
r(-4)= 31
ANSWER=31

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2 years ago