Answer:
d
Step-by-step explanation:
1.75 ( would be the coffee) + 1.50d (donuts each but an unknown quantity)
total amount must be less than $37 dollars
Your answer would be 37.00 - 1.75 = 35.25 cents
35.25 / 1.50 = 23.5 donuts - you can not purchase a half of a donut so you can buy 1 coffee and 23 donuts for $36.25
They should be the same since it’s congruent ??
I just kind of sat here playing with numbers i dont really know a shortcut but the answer is 10 chickens and 15 rabbits
10*2= 20 each chicken has two legs so thats 10 heads 20 legs
15*4=60 each rabbit has four legs so thats 15 heads 60 legs
15+10=25 heads
20+60=60 legs
Answer:
Mean =![\sum x P(x) = 36.86](https://tex.z-dn.net/?f=%5Csum%20x%20P%28x%29%20%3D%2036.86)
Standard deviation =![\sum x^2P(X)=1360.9](https://tex.z-dn.net/?f=%5Csum%20x%5E2P%28X%29%3D1360.9)
Step-by-step explanation:
x P(x)
![x^2 \times P(x)](https://tex.z-dn.net/?f=x%5E2%20%5Ctimes%20%20P%28x%29)
33 0.02 0.66 21.78
34 0.06 2.04 69.36
35 0.1 3.5 122.5
36 0.2 7.2 259.2
37 0.24 8.88 328.56
38 0.26 9.88 375.44
39 0.1 3.9 152.1
40 0.02 0.8 32
1 36.86 1360.9
We are supposed to find mean and standard deviation
Mean =![\sum x P(x) = 36.86](https://tex.z-dn.net/?f=%5Csum%20x%20P%28x%29%20%3D%2036.86)
Standard deviation =![\sum x^2P(X)=1360.9](https://tex.z-dn.net/?f=%5Csum%20x%5E2P%28X%29%3D1360.9)