4 years ago

If xy is rational, must x and y each be rational?

Mathematics

1 answer:

balu736 [363]4 years ago

3 0

<span>Your answer is is simply,no x and y could have a common irrational factor. </span>

You might be interested in

What are the surface area and volume of a spherical barrel cactus with a radius of 5 inches?

tino4ka555 [31]

$\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r = 5 \end{cases}\implies SA=4\pi (5)^2 \\\\\\ SA=100\pi\implies SA\approx 314.16 \\\\[-0.35em] ~\dotfill\\\\ \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}\qquad \qquad V=\cfrac{4\pi (5)^3}{3}\implies V=\cfrac{500\pi }{3}\implies V\approx 523.60$

7 0

3 years ago

Questions is: the sum of 28+29+42=99. what addition property was used commutative, associative, identity, and distributive ?

Arturiano [62]

Since, it is given that $28+29+42= 99$

Now, we have to identify the addition property for the given equation.

Associative property of addition states that for any real numbers say 'a' , 'b' and 'c', a+(b+c) = (a+b)+c

So, in the given question 28+29+42

We can use associative property as

(28+29)+42 = 28+(29+42)

57+42 = 28+71

99 = 99

Hence, among the given properties, associative addition property is used.

8 0

3 years ago

4.what is the orgin and why is it important?

Elan Coil [88]

The origin is the centre of the axis, and has the coordinates (0,0). It is important because it is essentially the "origin" of the number on the axis.

4 0

3 years ago

Does anyone know this ? Thank you

alina1380 [7]

Answer:

Step-by-step explanation:

angle ACB = 180-130=50 degree

angle ABC = 180 - (94+50)

= 180-144

= 36

6 0

3 years ago

Connor borrows $8,000 at a rate of 19% interest per year. what is the amount due at the end of 7 years if the interest is compou

Mariana [72]

a$14,576

I t will be the answer.

5 0

3 years ago