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enot [183]
3 years ago
12

It took 30 minutes to drive 45 miles.

Mathematics
1 answer:
Lelechka [254]3 years ago
7 0

Answer:0.43 hours

Step-by-step explanation:

15

miles

35

miles

hour

=

5

⋅

3

5

⋅

7

hours

=

3

7

hours

=

0.43

hours

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When solving the equation 5/18=5/4x+6 algebraically, it is possible to set the denominators of the fractions equal to each other
eduard

Yes, but only if the numerators of both fractions are equal to each other.

Given that two fractions are equal to each other, we can set the denominators to be equal to each other, in the instance of this question, but that is only possible, if and only if the numerators of the fractions are equal to one another.

Another proof is,

\frac{3}{9} = \frac{3}{4 + x}

like in the attached example, we can say that 9 = 4+x, and go further ahead to solve it.

9 = 4 + x

x = 9 - 4

x = 5

if x = 5, then we can assume that

\frac{3}{9} = \frac{3}{4 + 5}

\frac{3}{9} = \frac{3}{9}

This proves that only the numerator has to be the same for the denominator to be able to be equal to one another.

more explanation can be found here brainly.com/question/7067665

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3 years ago
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PtichkaEL [24]

Answer:

200cm^2

Step-by-step explanation:

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Length of a rectangle = Area ÷ breadth.

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Similarly, when we need to find breadth of a rectangle we need to divide area by length.

Breadth of a rectangle = Area ÷ length.

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Step-by-step explanation:

To find the discount price, you do 329.95*.67= 221.0665

221.0665 is rounded to 221.07

Hope this helps!

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