The answer is B. Since the right angles is 90 degrees then the equation is 5x + 30 + 5x = 90. Please mark me Brainiest
Answer:

So then the best answer for this case would be:
C. 2.78
Step-by-step explanation:
For this case we have the following probabability distribution function given:
Score P(X)
A= 4.0 0.2
B= 3.0 0.5
C= 2.0 0.2
D= 1.0 0.08
F= 0.0 0.02
______________
Total 1.00
The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.
If we use the definition of expected value given by:

And if we replace the values that we have we got:

So then the best answer for this case would be:
C. 2.78
Answer:
10% of 2,000=200
Step-by-step explanation:
The mistake she make was that she used the wrong kind of math to get the answer
Answer:
She sold 10 cups per hour
Step-by-step explanation:
To find the number per hour, divide the total sold by the total number of hours.
20 cups/2 hours = 10 per hour
Answer:
The answer would be 4/5
Step-by-step explanation:
12/20 equals to 4/5
hope this helps:)