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True [87]
3 years ago
15

Please help this is due tomorrow. 1/2 of 20?

Mathematics
2 answers:
SashulF [63]3 years ago
8 0
Divide 20 by 2 and you get the answer = 10

\frac{20}{2}  = 10
Mars2501 [29]3 years ago
6 0

1/2 of 20 is 20/2 which is 10.

All you really need to do here is to divide 20 by 2 to get 10.


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The sum of two numbers is 25. Their difference is 9. What are the two numbers?
Lynna [10]
Using x and y as the numbers

x+y=25 -------#1
x-y=9  -------#2

Using addition of #1 and #2
x+y+x-y= 25+9
2x+0y=34
2x=34
x=17

Using the value of x and plugging said value into #1 or #2, we can find y
x=17

x+y=25
17+y=25
y=8

OR

x-y=9
17-y=9
-y=-8
y=8

The numbers are 8 and 17
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alexgriva [62]

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I still don’t understand can someone give a helping hand?
Fofino [41]

Answer:

A

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A, B, C, and D, are all functions. the " { " is saying that those functions can are different at different points. For A the function is A= -x-2 when x< 2 and then A=x+4 when x\geq -2. At the point x=-2 you can see that the function on the graph is going in two different directions but it stops at x=-2.

Based on the graph you can see that the line on the left has a slope of -1 and if it kept going it would cross the y-axis at y=-2, therefore the equation for the first line is y =-x-2 when x

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We need to subtract 3 degrees from Thursdays temperature

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