You need to simplify 3(2x-5) which would make it 6x-15 on the bottom.
Then take 4x + 3 in and multiply it by 6x - 15 to get the area.
PERIMETER= 8x + 6 + 12x - 30
= 20x - 24
Answer:
There is 1 positive and 1 negative root
Step-by-step explanation:
Answer:
16/49
i dont have an explaination i just used somthing but it wont let me say it uh yea
Answer:
Step-by-step explanation:
given that the following data represent the discrete probability distribution for the number of stars that reviewers have a first edition statistics reference book.
Stars 5 4 3 2 1
Probability 25% 35% 20% 10% 10%
H0: Second edition is as per the above probabilities
Ha: atleast one is different from the above probability
(two tailed chi square test)
Alpha = 0.025
Assuming H0 to be true we calculate expected frequencies for total 80
chi square calculatons are shown below
df = 4
5 4 3 2 1 Total
Observed 28 28 13 6 5 80
Expected 20 28 16 8 8 80
chi square
(O_E)^2/E 3.2 0 0.5625 0.5 1.125 5.3875
p value =0.1455
Since p value >0.025, we accept H0
The expected requency of three-star reviews is ________.16
