Answer:
128 and 74.
Step-by-step explanation:
128 rounded to the nearest ten is 130, and 74 rounded to the nearest ten is 70. 130-70=60
Answer:
267 and 322
Step-by-step explanation:
Answer:
6.8
Step-by-step explanation:
8 * 6 = 48 (to reverse dividing by 6 to basically un-average the 6 numbers).
5 * 4 = 20 (to un-average these numbers as well).
48 + 20 = 68
68 / 10 = 6.8
Basically by doing this you are still adding all the numbers together & then dividing by 10 as if you added them all up at once & not in a group of 6 & a group of 4.
Hope this helped. :)
Answer:
Step-by-step explanation:
Rationalize the denominator of b. So, multiply the numerator and denominator by 

Now, find a +b

Combine like terms

Now find (a + b)²
(a +b)² = 

Hint: 
Answer:
p(x)=x3-3x2+4x+50 and g(x)=x-3