Answer:
a
Step-by-step explanation:
I dunno how to explain but A is the answer
Answer:
11/15 is greater
Step-by-step explanation:
Answer:
it will be 36 (B)
Step-by-step explanation:
1/2(72+55)=36
hope this help!
The answer should be A, if he marked it up 70% just multiply 66 by 1.7 for your answer.
To solve the equation using complete square method we proceed:
z^2-19z=66
but
c=(-b/2a)^2
c=(-19/2)^2
c=361/4
thus:
z^2-19z+361/4=66+361/4
factoring the LHS we get:
1/4(2z-19)^2=625/4
(2z-19)^2=625
getting the square root of both sides we get:
2z-19=+/-25
2z=+/-25+19
2z=44 or -6
z=22 or -3
Answer: z=22 or z=-3
