Chris paid $36 for 3 similar tank tops and 2 similar 5 shirts. A T shirt cost 3 times as much a tank top. How much did Chris pay
2 answers:
Answer:
$24.
Step-by-step explanation:
Let x represent cost of each tank top.
We have been given that a T-shirt cost 3 times as much a tank top, so the cost of each T-shirt would be .
We have been given that Chris paid $36 for 3 similar tank tops and 2 similar T-shirts.
We can represent this information in an equation as:
The cost of each T-shirt:
Cost of two T-shirts would be
Therefore, Chris paid $24 for 2 T-shirts.
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Answer:
a) The probability distribution is
b) 0.5 = 50% probability that X will take on a value between 21 and 25.
c) 0.25 = 25% probability that X will take on a value of at least 26.
Step-by-step explanation:
Uniform probability distribution:
An uniform distribution has two bounds, a and b.
The probability of finding a value of at lower than x is:
The probability of finding a value between c and d is:
The probability of finding a value above x is:
Uniform distribution over the interval from 20 to 28.
This means that
a. What’s the probability density function?
The probability density function of the uniform distribution is:
In this question:
b. What’s the probability that X will take on a value between 21 and 25?
0.5 = 50% probability that X will take on a value between 21 and 25.
c. What’s the probability that X will take on a value of at least 26?
0.25 = 25% probability that X will take on a value of at least 26.