Answer:
For the first one it is D.
Step-by-step explanation:
I added 84.6 and 30.4 which gives me 115. I then added 66 to get 181, triangles angles only add up to 180 degrees, therefore they are not similar.
a=adult tickets
s = senior tickets
a+s=465 a = 465-s
23a + 13s = 7145
substitute in a = 465-a
23 (465-s) + 13s = 7145
distrubute
10695 - 23s +13s =7145
combine like terms
10695 - 10s = 7145
subtract 10695 from each side
-10s = -3550
divide by -10
s = 355
senior tickets sold 355
Answer:
60
Step-by-step explanation:
This is experimental probability. The probability here is based on the people in the room instead of the number of people in the population. You're taking actual physical data and conducting a probability experiment, so that makes it experimental.
Answer:
6
chaperones will be needed.
Step-by-step explanation:
1 to 25 students require (at least) 2 chaperones.
26 to 50 students require (at least) 4 chaperones.
51 to 75 students require (at least) 6 chaperones.
This is an example of use of the ceiling function.
The ceiling of a value
x
(sometimes written as
⌈
x
⌉
) is defined as the smallest integer greater than or equal to
x
.
In the given example we are asked for
XXX
2
×
⌈
53
25
⌉
XXXXXXXXX
which is
6
