7/10 divided by -2/7

Mathematics

2 answers:

Tpy6a [65]1 year ago

6 0

Answer:

1/20

Step-by-step explanation:

hope this helps

Igoryamba1 year ago

3 0

Answer:

49/20

Step-by-step explanation:

Bye! ~ SunnyBunny <3

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Michelle family drove 272.48 miles Michelle calculated that they drove 26.2 miles per gallon of gas how many gallons of gas did

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Michelle family drove 272.48 miles.
=> Michelle calculated that they drove 26.2 miles per gallon of gas.
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=> Unit rate = 26.2 miles per gallon
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Plz help, And no links please

Talja [164]

I did not get any zeros since the graph doesn’t cross the x axis, meaning that there are no rational zeros

However, here is the method u can use to find the zeros lol

You can use the quadratic formula in order to get the zeros

This is the equation therefore use these values
ax^2+bx+c=0

A=1
B= -5
C=12

The quadratic formula is -b±√(b^2-4ac))/2a (I left a picture just in case)

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The simplified expression by rationalizing the denominator is (C) $\frac{4 \sqrt{15x} }{15x}$ .

First we must simplify the expression:
$\frac{3 \sqrt{160} }{\sqrt{1350x} } = \frac{12 \sqrt{10} }{15 \sqrt{6x} } = \frac{4 \sqrt{10} }{5 \sqrt{6x} }$

Then we factor the rational parts and cancel it out:
$\frac{4 \sqrt{2} \sqrt{5} }{5 \sqrt{2} \sqrt{3x} } = \frac{4\sqrt{5} }{5\sqrt{3x} }$

Then we rationalize the expression:
$\frac{4\sqrt{5} }{5\sqrt{3x} } * \frac{\sqrt{3x} }{\sqrt{3x} } = \frac{4 \sqrt{15x} }{5*3x} = \frac{4 \sqrt{15x} }{15x}$

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