Answer:
10:30am
Step-by-step explanation:
total lesson time is 1 hr and 15 min (10 to 11:15).
lesson time is 1 hr total and the break mid way is :15 long.
the lesson before the break is from 10-10:30 (:30 length)
break is at 10:30 (:15 long concluding at 10:45).
lesson resumes at 10:45 when break is over
the lesson runs another :30 until 11:15 (10:45-11:15)
halfway thru the lesson is 10:30am for the break to start
Answer:
t ≥ 72
Step-by-step explanation:
The pool has to be at least 72° or MORE to open, so we are going to have a greater sign with an equal sign under indicating that the temperature has to at least be 72° or be greater than 72°. (≥)
Answer:
Yes
Step-by-step explanation:
Hard to explain
Answer:
The numbers are 2 and 7.
Step-by-step explanation:
If x and y are the 2 numbers:
x + y = 9
x - y = 5 Adding the 2 equations
2x + 0 = 14
x = 7.
Plug this into the first equation:
7 + y = 9
y = 2.
Answer:
z=i+2
,
z=i-2
Step-by-step explanation:
Remember that the quadratic equation 
has the complex solutions 
(this is the quadratic formula).
Apply this with a=1, b=-2i and c=-5 to get:
. Then the solutions are
and 
It isn't necessary to use De Moivre's formula.
