The equation for a trapezoid is a+b/2*h. In this case, we have 3.2+8/2.
So 5.6=22.4/h. The height is 4 feet.
The answer is what I have attached as an image. There are two ovals. The oval on the left is the input oval with the numbers -2, -1, 3 and 6 inside. There are arrows connecting those values to the number -4 in the other oval, which is the set of outputs. This relation is a function. The reason why is because each input leads to exactly one output.
Answer:
Approximately 0% probability of the group contains exactly seven seniors and three juniors.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question, the order in which the students are chosen is not important, which means that we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

Desired outcomes:
7 seniors, from a set of 7.
3 juniors, from a set of 10. So

Total outcomes:
10 students froms a set of 50. so

Probability:

Approximately 0% probability of the group contains exactly seven seniors and three juniors.
Answer:
x = 20
Step-by-step explanation:
x/2 - 3 = 7
+3 =10
2 × 10 = 20
15×0.05= $0.75 (percentage of tax)
15×0.15= $2.25 (percentage of tip)
$0.75+$2.25+$15=$18