Answer:
176
Step-by-step explanation:
1 foot = 12 inch
1200 feet = 12 x 1200 = 14400 inch
circumference of tyre = pi x 13 x 2 = 81.6814
14400 / 81.6814 = 176.29
A=4 4 times 12 is 48 minus 24 is 24
Answer:
Kindly check explanation
Step-by-step explanation:
H0 : μ = 15.7
H1 : μ < 15.7
This is a one sample t test :
Test statistic = (xbar - μ) ÷ (s/√(n))
n = sample size = 33
Using calculator :
The sample mean, xbar = 15.41
The sample standard deviation, s = 0.419
Test statistic = (15.41 - 15.70) ÷ (0.419/√(33))
Test statistic = - 3.976
Using the Pvalue calculator :
Degree of freedom, df = n - 1 ; 33 - 1 = 32
Pvalue(-3.976, 32) = 0.000187
Decison region :
Reject H0 if Pvalue < α
Since Pvalue < α ; we reject H0
There is significant evidence to conclude that the true average height of the seedlings treated with an extract from Vinca minor roots is less than 15.7 cm.
Answer:
D -9
Step-by-step explanation:
(g o f)(-1) = g(f(-1))
f(-1) =
g(-4) = -4 - 5 = -9
So, (g o f)(-1) = -9
Line y = –x + 4 intersects the line y = 3x + 3., this is the right answer