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3 years ago

Fiona was thinking of a number. Fiona doubles it, then adds 5 to get an answer of 49.2. What was the original number?

Mathematics

2 answers:

LuckyWell [14K]3 years ago

8 0

Answer:

22.1

Step-by-step explanation:

To find the answer we have to work backward:

We start with 49.2 and have to SUBTRACT 5:

49.2-5=44.2

Next, we must DIVIDE by 2:

44.2/2=22.1

To check our answer we can plug it into the problem:

22.1x2=44.2 44.2+5=49.2

I hope this helps :)

Musya8 [376]3 years ago

4 0

22.1
She added 5 so you take away 5 which would be 44.2 then she doubles it another word for multiplication so you do the opposite and divide by 2 and you get 22.1

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Answer:

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Step-by-step explanation:

Given that the midpoint of segment AB is (4, 2). The coordinates of point A is (2, 7).

<h3>To Find the coordinates of point B:</h3>

Let the coordinate of A be $(x_1,y_1)$ is (2,7) respectively
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Now substitute the coordinates int he above formula we get
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Multiply by 2 we get Multiply by 2 we get

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$8=2+x_2$ $4=7+y_2$

Subtracting 2 on both

the sides Subtracting 7 on both the sides

$8-2=2+x_2-2$ $4-7=7+y_2-7$

$6=x_2$ $-3=y_2$

Rewritting the above equation Rewritting the equation

$x_2=6$ $y_2=-3$

<h3>Therefore the coordinate of B $(x_2,y_2)$ is (6,-3)</h3><h3>Therefore the option B) is correct.</h3>

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Answer:

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Step-by-step explanation:

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