Answer:
798
Step-by-step explanation:
first you do 40x20=800 then 800-6=794 then 794+4=798
Given expression is x² - 121
This is called Difference of Squared terms, we have a formula that is given as :-
a² - b² = (a - b) · (a + b)
Now using the above formula in the given expression, we get :-
x² - 121
x² - (11)²
here a = x and b = 11
x² - (11)² = (x - 11) · (x + 11)
but it says that student gave the answer as (x - 11) · (x - 11).
So, student's answer should be (x - 11) · (x + 11) instead of product of two (x - 11) terms.
Age is the independent variable
Answer:
2.9 per hour
Step-by-step explanation:
Divide 69.9 by 24
