Answer:
Step-by-step explanation:
<u>TRUE</u>
All isosceles triangles have at least 2 acute angles due to 2 sides are equal.
The exterior angle of an equilateral triangle is obtuse.
If the perimeter of an equilateral triangle is P, then the length of each of the sides is P/3.
<u>FALSE</u>
All isosceles triangles are equilateral triangles.
If you know the length of one of the legs of an isosceles triangle, you can determine it’s the perimeter
11.86 miles is the answer.
Answer: We reject the null hypothesis and conclude that the treatment group has errors that vary significantly more than the errors of the placebo group.
Step-by-step explanation:
Null hypothesis : Var1 = Var 2
Alternative hypothesis : Var1 > Var 2
The F test statistic is the ratio of squared sample standard deviation:
F= (2.4)^2 / (0.75)^2 = 5,76/ 0,5625 = 10.24
Now we have to get the critical from the F table with degrees of freedom ( n1-1,n2-1)=(23,23) :
From the F table ,F(0.05) = between 2.0050 and 2.0476 .
General rule : if the value of the test statistic is in a rejection region . Reject We reject the Null hypothesis .
F= 10.24 > 2.0476 . Therefore we reject the null hypothesis .
Conclusion: The errors of the treatment group vary more than the error of the placebo group .
4x+9=17
4x-9=-9
4x=8
4x/4=8/4
X=2
Answer:
The two friends will have same account balance in 10 weeks.
Step-by-step explanation:
Given that:
Amount deposited by Reid = $100
Amount deposited each week = $40
Let,
x be the number of weeks.
R(x) = 40x + 100
Amount deposited by Akira each week = $50
A(x) = 50x
For the two friends to have same account balance,
A(x) = R(x)
50x=40x+100
50x-40x=100
10x=100
Dividing both sides by 10
Hence,
The two friends will have same account balance in 10 weeks.