The law of cosines can be helpful here. The largest angle (C) will be opposite the longest side (c). That law tells us ...
... c² = a² + b² -2ab·cos(C)
Then
... cos(C) = (a² +b² -c²)/(2ab)
We don't actually need the angle. We only need to know the sign of the cosine.
... cos(C) = (7² +15² -17²)/(2·7·15) = -15/210 . . . . negative sign, so C > 90°
The sail has the shape of an obtuse triangle.
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A triangle solver app on your calculator, phone, tablet, or computer can give you the result easily.
Answer:
99% confidence interval for the soil water content is determined by
(0.19474, 0.26926)
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given mean of the sample = 23.2% = 0.232
Given standard deviation of the sample = 1.0% =0.01
Given sample size 'n' =4
Degrees of freedom = n-1 =4-1 =3
critical value = 0.01
99% confidence interval for the soil water content is determined by
( 0.232 -0.03726 , 0.232 +0.03726)
(0.19474, 0.26926)
<u><em>Final answer:</em></u>-
99% confidence interval for the soil water content is determined by
(0.19474, 0.26926)
Let x be the number of students going
Let y be the total cost
Then,
7x=y
7(26)=y
$182=y
Therefore, the total cost would be $182 for 26 students to go.
Hope I helped :)
Answer:
78.4pi or 246.30
Step-by-step explanation:
144/360=2/5
EFG=2/5 area of circle
Area of circle=14^2*pi
Area=196pi
78.4pi
I think that it is 246.30 to the nearest hundredth