Answer:
Are you sure it ia not x2 - x1 in the denominator?
Answer: X= -3/4, -1/2
Step-by-step explanation:
Answer:
44
Step-by-step explanation:
Angle C is half the angle at the centre, i.e ½(180) = 90
Using triangle ABC
90 + 46 + angle B = 180
Angle B = 180 - 136
Angle B = 44°
Answer: <u>56.9</u> years to <u>63.1</u> years.
Step-by-step explanation:
Confidence interval for population mean (when population standard deviation is unknown):
, where = sample mean, n= sample size, s= sample standard deviation, = Two tailed t-value for .
Given: n= 24
degree of freedom = n- 1= 23
= 60 years
s= 7.4 years
Two tailed t-critical value for significance level of and degree of freedom 23:
A 95% confidence interval on the true mean age:
Hence, a 95% confidence interval on the true mean age. : <u>56.9</u> years to <u>63.1</u> years.
(y - yo) = m.(x - xo)
We have the points (4, 12) and (x, 18) with slope of 3.
(18 - 12) = 3.(x - 4)
6 = 3x - 12
3x = 6 + 12
3x = 18
x = 18/3
x = 6