I'm assuming that there is another root which should be -SQRT(11)
f(x) = x(x-4)(x+SQRT(11))(x-SQRT(11)
Then
f(x) = x^4 -4x^3 - 11x^2 +44x
if theres 3 boxes with 27 toys in total divide 27 by 3 and the answer is there are 9 toys in each box.
Answer: 0.893
Step-by-step explanation:
Given : Sample size of residential water bills: n=100
Number of residences had reduced their water consumption over that of the previous year = 80
Then sample proportion:
Critical value for 98% confidence=
The upper bound for confidence interval for population proportion :
Hence, the 98% upper confidence bound for the proportion of residences that reduced their water consumption.=0.893
Answer:
c) A writer uses twice as many pencils each week as he did the week before.
Step-by-step explanation:
C is exponential while the rest are linear. They increase by a set amount over a certain amount of time
Because corresponding parts in a similar polygon is in proportion, 18/12=x/5
12x=90
4x=30
2x=15
x=15/2
Done!
If you have any more questions about this problem just comment and I will answer it for you, also I would really really appreciate it if you give me brainlliest!