Answer:
36 cm
hope it helps have a great day
12x + 4 + 14x - 2 + 100 = 180
26x + 102 = 180
26x = 78
x = 3
or you can do
12x + 4 = 14x - 2 (because <span>Δ ABC is isosceles)</span>2x = 6
x = 3
Answer:
a)
b)
If we compare the p value and the significance level given we see that we have enough evidence to reject the null hypothesis at 5% of significance.
Step-by-step explanation:
Data given and notation
n=114 represent the random sample taken
estimated proportion of people that their approval rating might have changed
is the value that we want to test
represent the significance level
Confidence=95% or 0.95
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Hypothesis
We need to conduct a hypothesis in order to test the claim that true proportion of people that their approval rating might have changed is 0.58 or no.:
Null hypothesis:
Alternative hypothesis:
Part a
(1)
Calculate the statistic
Since we have all the info requires we can replace in formula (1) like this:
Part b: Statistical decision
The significance level provided . The next step would be calculate the p value for this test.
Since is a bilateral test the p value would be:
If we compare the p value and the significance level given we see that we have enough evidence to reject the null hypothesis at 5% of significance.
So lets give the shorter leg a variable, x. we know that the hypotonouse is 4x-3 and the longer leg is 4x-4. you can then use pythagorean theorem to figure it out from there. x squared plus 4x-4 squared equals 4x-3 squared. if you still have problems for this question, send me a comment
Answers: B D C
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