What is the circumcenter of a triangle with the coordinates of (-3,3) (-3,-2) (1,-2)
1 answer:
Answer:
We know that the circumcenter of a right triangle is at the center of the hypotenuse.
Thus, the circumcenter of a triangle is: C(-1, 1/2)
Please check the attached figure.
Step-by-step explanation:
Given the triangle with the coordinates of the vertices
- (-3, 3)
- (-3, -2)
- (1, -2)
First plot the points on the graph, as shown in the attached diagram.
It is clear from the attached diagram that it forms a right triangle.
- We know that the circumcenter of a right triangle is at the center of the hypotenuse.
From the attached diagram, it is clear that the center of the hypotenuse lies on C(-1, 1/2).
Thus, the circumcenter of a triangle is: C(-1, 1/2)
Please check the attached figure.
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Answer:
Step-by-step explanation:
Hello!
The objective of this experiment is to test if two different foam-expanding agents have the same foam expansion capacity
Sample 1 (aqueous film forming foam)
n₁= 5
X[bar]₁= 4.7
S₁= 0.6
Sample 2 (alcohol-type concentrates )
n₂= 5
X[bar]₂= 6.8
S₂= 0.8
Both variables have a normal distribution and σ₁²= σ₂²= σ²= ?
The statistic to use to make the estimation and the hypothesis test is the t-statistic for independent samples.:
t=
a) 95% CI
(X[bar]_1 - X[bar]_2) ± *
Sa²= =
= 0.5
Sa= 0.707ç
(4.7-6.9) ± 2.306*
[-4.78; 0.38]
With a 95% confidence level you expect that the interval [-4.78; 0.38] will contain the population mean of the expansion capacity of both agents.
b.
The hypothesis is:
H₀: μ₁ - μ₂= 0
H₁: μ₁ - μ₂≠ 0
α: 0.05
The interval contains the cero, so the decision is to reject the null hypothesis.
<u>Complete question</u>
a. Find a 95% confidence interval on the difference in mean foam expansion of these two agents.
b. Based on the confidence interval, is there evidence to support the claim that there is no difference in mean foam expansion of these two agents?