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Oliga [24]
4 years ago
13

What are 2 ways of solving this proportion? 4/5 = 28/x

Mathematics
1 answer:
max2010maxim [7]4 years ago
6 0

The first way is to cross multiply

4/5 = 28/x

4x = 5*28

4x = 140

4x/4 = 140/4

x = 35 which is the answer

=============================================

The second method is to note the denominators 4 and 28, and to ask yourself "what times 4 gets me 28?". The answer being 7, so 7*4 = 28. If you multiply top and bottom of the fraction 4/5 by 7, then you end up with 7*4 = 28 up top and 7*5 = 35 down below. This is another way of seeing how 4/5 = 28/35

Either way, the answer is x = 35

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dalvyx [7]

Answer:

The answer is

<h2>\sqrt{218}  \:  \: or \:  \: 14.76 \:  \:  \: units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2} +  ({y1 - y2})^{2}  }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

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The distance is

<h3>d =  \sqrt{ ({ - 4 - 3})^{2} +  ({6 + 7})^{2}  }  \\  =  \sqrt{( { - 7})^{2}  +  {13}^{2} }  \\  =  \sqrt{49 + 169}  \:  \:  \:  \:  \:  \:  \:  \\  =  \sqrt{218}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\  = 14.7648230602</h3>

We have the final answer as

<h3>\sqrt{218}  \:  \: or \:  \: 14.76 \:  \:  \: units</h3>

Hope this helps you

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3 years ago
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Step-by-step explanation:

 

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   3                 2

Step  2  :

           1

Simplify   —

           3

Equation at the end of step  2  :

   1                

 ((— • 21) -  1) -  6

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Step  3  :

Pulling out like terms :

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