Which ratio is equivalent to 3/7

1 answer:

Alex3 years ago

8 0

That is the simplest ratio because 3 and 7 do not have common factors.

But some similar ratios are

6/14

9/21

12/28

15/35

And so on

Hope I helped!

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A shirt is priced at $12. What is the price after a 5% discount and 6% sales tax?

Alex787 [66]

Discount of 5
6% tax

100-5=95
100+6=106

12*0.95*1.06=12.084

the price is $12.08

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3 years ago

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10. simplify the rational expression by rationalizing the denominator.( 1 point ) 4√150/√189x

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Rationalizing the denominator, simply means "getting rid of that pesky root at the bottom", and we do so by simply multiplying it by something to take it out, of course, we multiply the bottom, we have to also multiply the top,

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$\bf \cfrac{4\sqrt{28350x}}{189x}\qquad 
\begin{cases}
28350=2\cdot 3\cdot 3\cdot 3\cdot 3\cdot 5\cdot 5\cdot 7\\
\qquad 2\cdot 3^2\cdot 3^2\cdot 5^2\cdot 7\\
\qquad 2\cdot (3^2)^2\cdot 5^2\cdot 7\\
\qquad 2\cdot (3^2\cdot 5)^2\cdot 7\\
\qquad 2\cdot (45)^2\cdot 7\\
\qquad 14\cdot 45^2
\end{cases}\implies \cfrac{4\sqrt{14\cdot 45^2}}{189x}
\\\\\\
\cfrac{4\cdot 45\sqrt{14}}{189}\implies \cfrac{180\sqrt{14}}{189x}\implies \cfrac{20\sqrt{14}}{21x}$

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Answer:

Step-by-step explanation:

We can use a graphing calc to determine which line is the correct one.

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It’s 35 degrees since you do 180-125 to get 35. :)

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