Answer: the answer is B (10) = B (22)
Step-by-step explanation:
Answer:
A Alternate interior angles of parallel lines are congruent
Step-by-step explanation:
The referenced angles (1, A), (3, C) are alternate interior angles, not corresponding or exterior. The symmetric property does not apply. The only answer choice with any applicability is the one shown above. (It is also the right choice.)
Answer:
(3a-1)(3a+1)
Step-by-step explanation:
We can quickly see with this problem that it is the difference of two squares as 9a^2 is (3a)^2 and 1 is 1^2 and therefore can factorise quickly using this rule.
x^2-y^2 = (x-y)(x+y) where x = 3a and y = 1
Answer:
(2400+420).
Step-by-step explanation:
We can break this into the same pattern as the other numbers, giving us:
(60×40)+(60×7)
When we multiply these we get:
(2400+420).