I need help with homework these two problems I'm having trouble with

Mathematics

1 answer:

ycow [4]3 years ago

3 0

The gcf of 25 and 60 is 5

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HELP ME PLZ!!!!!!!!!!

nevsk [136]

C. No, this is not a valid inference because she asked only 35 families

4 0

3 years ago

To rationalize the denominator of 2/square 13+ squared 11 , you should multiply the expression by which fraction?

eimsori [14]

Answer:

You should multiply the expression by $\frac{\sqrt{13}-\sqrt{11}}{\sqrt{13}-\sqrt{11}}$

Explanation:

To rationalize any expression, you must multiply it by its conjugate. A conjugate is defined as a similar expression to the original one but with an opposite sign

This means that:

The conjugate of a + b would be a - b

Now, the given expression is $\frac{2}{\sqrt{13}+\sqrt{11}}$

Consider the denominator:

From the above, we can conclude that the conjugate of $\sqrt{13}+\sqrt{11}$ is $\sqrt{13}-\sqrt{11}$

And, remember that we need to keep the value of the expression unchanged. This means that we must multiply both the numerator and the denominator by the same value

Therefore:

You should multiply the expression by $\frac{\sqrt{13}-\sqrt{11}}{\sqrt{13}-\sqrt{11}}$ in order to rationalize the denominator

Hope this helps :)

5 0

3 years ago

Read 2 more answers

Tiana helped make signs for the school marching band’s fundraiser. Each side of the square sign she made was 60 3/4 centimeters.

Minchanka [31]

Answer:

243

Step-by-step explanation:

60 3/4 × 4 (sides)