Answer:
Hi myself Shrushtee.
Step-by-step explanation:
We are unable to see your answer clearly post it by scanning it ok post it again.
Answer:
6xy
Step-by-step explanation:
Answer:
Step-by-step explanation:
This is a binomial probability distribution because there are only 2 possible outcomes. It is either a randomly selected student grabs a packet before being seated or the student sits first before grabbing a packet. The probability of success, p in this scenario would be that a randomly selected student sits first before grabbing a packet. Therefore,
p = 1 - 0.81 = 0.91
n = 9 students
x = number of success = 3
The probability that exactly two students sit first before grabbing a packet, P(x = 2) would be determined from the binomial probability distribution calculator. Therefore,
P(x = 2) = 0.297
Answer:
190 cm²
Step-by-step explanation:
Use the area of a trapezium formula: 
where a and b are the top and bottom bases, and h is the height.
Therefore,
area = 
= 190 cm²
Answer:
The ramp should be 32.9 feet longer.
Step-by-step explanation:
When the ramp is at 
to the ground, its length can be determined by applying the appropriate trigonometric function. Let the length be represented by l, so that;
Sin θ = 
Sin = 
l = 
= 
= 33.0048
l = 33.0 feet
When the angle is reduced to 
, the length of the ramp would be;
Sin θ =
Sin =
l = 
= 
= 65.9152
l = 65.9 feet
Change in length of ramp = 65.9 - 33.0
= 32.9
The ramp should be 32.9 feet longer.
