What is the value of x/2y , when x = 10 and y = 1?
2 answers:
Answer:
C. 5
Step-by-step explanation:
We have been given an expression . We are asked to find the value of expression, when
and
.
To find the value of the expression, we will substitute and
in give expression as:
Therefore, the value of the expression would be 5 at the given values and option C is the correct choice.
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Answer:
We need to conduct a hypothesis in order to test the claim that the true proportion is equal to 14.6% or not. So we need to use a one proportion z test and the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
A. One-proportion z-test
When we conduct a proportion test we need to use the z statisitc, and the is given by:
(1)
And the conditions required are:
1) The data comes from a random sampling
2) Independence condition between observations
3) np>10 and n(1-p)>10
4) The sample size is 10 times lower than the population size.
Step-by-step explanation:
Data given and notation
n=865 represent the random sample taken
X=159 represent the housing units that are vacant
estimated proportion of vacant units
is the value that we want to test
represent the significance level
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Solution to the problem
We need to conduct a hypothesis in order to test the claim that the true proportion is equal to 14.6% or not. So we need to use a one proportion z test and the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
A. One-proportion z-test
When we conduct a proportion test we need to use the z statisitc, and the is given by:
(1)
And the conditions required are:
1) The data comes from a random sampling
2) Independence condition between observations
3) np>10 and n(1-p)>10
4) The sample size is 10 times lower than the population size.
1. First calculate the positive root of the quadratic using your preferred formula. I got a solution . That gives you the distance the ball traveled from d=0 (small hill). So the answer is A.
2. The domain is [0,2.121...]. The range is from 0 to the max height. The d for which the ball is the highest is given by the formula x = -b / 2a = -3.3/(-3.2) = 1.031... so the max is 1.902... So the range is [0,1.902...] So the answer is C.