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ss7ja [257]
3 years ago
11

How do you simplify 2/7 times 3/5

Mathematics
1 answer:
Mashcka [7]3 years ago
8 0

Answer:

31/45.  

Step-by-step explanation:

Give them common denominators, and then if you have to add them, add them if subtract, then subtract, if multiply, then multiply. And if you have to divide it to make the fraction smaller, then do so.

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4 years ago
WILL MARK BRAINLIEST. PLEASE HELP.<br> simplify:
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Answer:

2+3\sqrt{5}

Step-by-step explanation:

Hi!

This is a lot of radicals, so it may seem tricky. Let's begin by simplifying all of the radicals that can be simplified.

We can see that \sqrt{75} can be simplified.

Taking prime factorization:

=\sqrt{5^2\cdot \:3}

which is:

=5\sqrt{3}

So an updated equation is \left(\sqrt{5}+\sqrt{3}-\sqrt{15}\right)\left(\sqrt{5}-\sqrt{3}\right)+5\sqrt{3}.

Now, we need to expand this:

First, let's expand the parenthesis:

\sqrt{5}\sqrt{5}+\sqrt{5}\left(-\sqrt{3}\right)+\sqrt{3}\sqrt{5}+\sqrt{3}\left(-\sqrt{3}\right)+\left(-\sqrt{15}\right)\sqrt{5}+\left(-\sqrt{15}\right)\left(-\sqrt{3}\right).

We can apply some of are rules:

\sqrt{5}\sqrt{5}-\sqrt{5}\sqrt{3}+\sqrt{3}\sqrt{5}-\sqrt{3}\sqrt{3}-\sqrt{15}\sqrt{5}+\sqrt{15}\sqrt{3}

And, now to simplifying!

Adding similar elements:

\sqrt{5}\sqrt{5}-\sqrt{3}\sqrt{3}-\sqrt{15}\sqrt{5}+\sqrt{15}\sqrt{3}

Simplifying and cleaning up each radical:

5-3-5\sqrt{3}+3\sqrt{5}.

Now all we have to do is add the similar elements (again.)

In doing so we reach an answer of \boxed{2+3\sqrt{5}}

Hope this helps!

- Sahkfam

3 0
3 years ago
How to find the radius of a cone from only the height and volume
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Answer:the radius of a cone is the radius of its circular base. You can find a radius through its volume and height. Multiply the volume by 3. For example, the volume is 20.

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Read 2 more answers
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