I think its A hope this helps!!!!!!!
Answer:
21a-8
Step-by-step explanation:
Write a system of equations and solve.
x + y = 10
5x + 10y = 90
Multiply and combine equations
-5x - 5y = -50
5x + 10y = 90
------------------
5y = 40
y = 8
x = 2
There are 2 nickels and 8 dimes in the jar. Hope this helps! :)
The mean of the discrete probability distribution is of 1.28.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.
Then, considering the given distribution, the mean is given by:
E(X) = 0(0.13) + 1(0.61) + 2(0.15) + 3(0.07) + 4(0.04) = 1.28.
More can be learned about the mean of a discrete probability distribution at brainly.com/question/24855677
(a) they spent $24.56 in total (to show ur work, you multiply 6.17(4)
(b) they spent $50.05 on each light (to show ur work, you divide 200.20/4)
(c) they can spend $75.24 more (to show ur work, you do 300-224.76
i’m so sorry i cant show the work but i hope this helps!
