Answer:
A.30
Step-by-step explanation:
Sec ( -π/4 ) =
=1 / cos( -π/4 ) =
= 1 / cos (π/4 ) =
= 1 / √2/2 = 2/√2 = √2
( correct )
The answer is x^2-10x+25=0
3x^2 + 33x + 54 =
3(x^2 + 11x + 18) =
3(x + 2)(x + 9) <==
First, determine the number of computers that are needed for 924 students.
n = (924 students)(5 computers / 12 students)
n = 385 computers
Since, there are only 125 computers, the difference can be calculated.
d = 385 computers - 125 computers
d = 260 computers
Hence, 260 more computers are still needed.