extraneous root is a solution o an equation that seems to be right but when we check it (by substituting it into the original equation) it turns out not to be right
1 cm = 10 mm
1 x 44 = 10 x 44
44 cm = 440 mm
Joseph's new puppy is 440 mm (cute!).
Plug in each variable.
3(1/3)-4(-1+2)
Simplify
1-4(-1+2)
-3(1)
-3
9/20 miles a minute or .45 miles a minute
First add the ratio 1:3:5 together to give you the total number:
1 + 3 + 5 + = 9
Therefore you divide 72 by 9 to give you one part
72 divide 9 = 8
Now you times each part of the ratio by 8:
1 x 8 = 8
3 x 8 = 24
5 x 8 = 40
Therefore the answer would be written like this:
8:24:40
Hope this helps
