9514 1404 393
Answer:
2 3/22
Step-by-step explanation:
Multiply by 100.
213.6363...
Subtract the original.
213.6363... -2.1363... = 211.5
Divide this by 99.
211.5/99 = 2115/990 = 2 135/990 = 2 3/22
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The original number you multiply by is 10^n, where n is the number of repeating digits. Then the number you divide by is (10^n -1). Here, those values are 100 and 99, because there are 2 repeating digits.
2 + 57/550
y = 2x+5
rearrange the equation to make y the sof
y = 1/2x - 3
to find gradient of perpendicular line
1/2 ÷ ( - 1 )
y = -2x + c , the replace the coordinates (-3,-1)
y = 2x + 5
C.y=-3x-3
See the attached picture.
a= -1, b= 2 & c= -3
abc= -1 x 2 x -3
= 6
