They can be expressed as fractions
they have positive values and can be expressed as terminating decimals.
The distance between the tops of the poles is the hypotenuse of the triangle which is equal to the square root of (12^2 + 5^2)
The hypotenuse = square root (144 + 25) = 13 ft
Answer:
8.5 * 10^-3
Step-by-step explanation:
Multiply both the numerator and denominator by 
, which is called the "conjugate" of 
:
Why do we pick this number? Recall the difference of squares factorization:
Now replace 
and 
. Then
So in your fraction, you end up with
Finally, just expand the product.
Answer:
54 stitches
Step-by-step explanation:
Dodd's knitting is (12 stitches)/(2 inches) = 6 stitches per inch. Then in a width of 9 inches, there will be ...
(9 inches)(6 stitches/inch) = 54 stitches
