I believe 25 has to be added as
(x*5)^2 = x^2 + 10x + 25
Answer:
209.96
Step-by-step explanation:
we know that the circumference of the circle is equal to
C = 
we have
substitute would be
assume that 
64
Answer: One sample z test for means
Step-by-step explanation:
From the information given, the sample size is large. It is greater than 30. Again, the population standard deviation is given. This means that the test statistic would be the z score which is determined by the formula
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = population standard deviation
The probability value would be determined from the normal distribution table.
Therefore, the hypothesis test that should be used is
One sample z test for means
4a+3b-(-2a-3b)
=4a+3b+2a+3b
=6a+6b
=6(a+b)
Answer:
29.74 degrees.
Step-by-step explanation:
Tan(theta) = opposite / adjcent.
opposite = 8
adjacent = 14
Tan(theta) = 8/14
Tan(theta) = 0.5714
theta = tan^-1(0.5714)
theta = 29.74 degrees
