Answer:
Step-by-step explanation:
Given the expression 4^{-2}•7^{-2}. The following expression are equivalent to given expression on simplification.
Generally from indices, a^-b = 1/a^b. Applying this to the given expression we have:
4^{-2}•7^{-2} = 1/4^2 • 1/7^2
= 1/(4×4) • 1/(7×7)
= 1/16 • 1/49
= 1/(16×49)
= 1/784
Answer:

Step-by-step explanation:
See attached file for complete work.
Answer:
Step-by-step explanation: the answer is true
Answer:
ZURW and ZWRS
Step-by-step explanation:
You have to check what lines intersect.