Answer:
between step 1 and 2 he left off the 5
Answer:
x=7 x=5 x=3
Step-by-step explanation:
First set the equations equal to zero
x-7 = 0
then add the 7 to both sides
and do this for all three
Answer:
12.5
Step-by-step explanation:
We can use ratios to solve
4 4+6
---- = ----------
5 AC
4 10
---- = ----------
5 AC
Using cross products
4 * AC = 5*10
4AC = 50
Divide by 4
AC = 50/4
AC =12.5
Let S be the set of whole numbers between 3 and 15 then <span>S={3,4,5,6,7,8,9,10,11,12,13,14,15}</span> so How many elements are in the set ? just count them..