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So the "back" of the arrow is on/above -20.
The arrow points to -12.
You added something to -20 to get to -12.
So the first number is -20. You added ? to get -12. -12 is the last number / the answer to the equation.
So the equation from what you have so far is -20 + ? = -12
You need to isolate the ? so that you know what it is.
So to get rid of the -20 (make it 0), you have to add 20. -20 plus 20 equals 0, which basically means it is gone. You also have to add 20 to -12. 20 plus -12 equals 8.
Now the equation is ? = 8.
So you know that the second number is 8.
The equation makes sense; -20 + 8 = -12.
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If the difference between two numbers is 12, those two numbers may be:
13...1
14...2
15...3
16...4
etc...
We can ignore numbers which can be divided by themselves (like 2...14 or 4...16), so we have:
13...1
17...5
19...7
20...8
21...9
22...10
Let's stop here and find LCMs of given numbers:
13...1 = 13
17...5 = 85
19...7 = 133
20...8 = 40
21...9 = 63
22...10 = 110
So as we can see the numbers we're looking for are 19 and 7.
So he spent 1600 so x will represent original savings so
x-1600
then he spent 2/5 of the remainder on a refrigerator so
[(x-1600)2]/5
he had 1/3 of original savings left
[(x-1600)2]/5=1/3x
distrubute
(2x-3200)/5=1/3x
multiply both sides by 15
3(2x-3200)=5x
distrubute
6x-9600=5x
subtract 5x from both sides
x-9600=0
add 9600 to both sides
x=9600
Answer:
40
Step-by-step explanation:
<em>divide</em><em> </em><em>eight</em><em> </em><em>and</em><em> </em><em>ten</em>
<em>use</em><em> </em><em>a</em><em> </em><em>number</em><em> </em><em>that </em><em>can</em><em> </em><em>divide</em>
<em>use</em><em> </em><em>two</em>
<em>making</em><em> </em><em>four</em><em> </em><em>and</em><em> </em><em>five</em>
<em>use</em><em> </em><em>two</em><em> </em><em>again</em>
<em>making</em><em> </em><em>two</em><em> </em><em>and</em><em> </em><em>five</em>
<em>use</em><em> </em><em>two</em><em> </em><em>again</em>
<em>making </em><em>one</em><em> </em><em>and</em><em> </em><em>five</em>
<em>now</em><em> </em><em>we</em><em> </em><em>use</em><em> </em><em>five</em>
<em>making</em><em> </em><em>one</em><em> </em><em>and </em><em>one</em>
<em>that</em><em> </em><em>is</em>
<em>two</em><em> </em><em>times</em><em>.</em><em>t</em><em>w</em><em>o</em><em> </em><em>times</em><em> </em><em>two</em><em> </em><em>times</em><em> </em><em>five</em><em> </em><em>w</em>
<em>which</em><em> </em><em>is</em><em> </em><em>eight</em><em> </em><em>times</em><em> </em><em>five</em>
<em>which</em><em> </em><em>is</em><em> </em><em>fourty</em>
Answer:
the answer is B
Step-by-step explanation:
