Answer:
-1.540
Step-by-step explanation:
H0 : μ = 18
H0 : μ ≠ 18
The sample size, n = 48
Sample mean, xbar = 17
Sample standard deviation, s = 4.5
α = 0.05
The test statistic :
(xbar - μ) ÷ (s/√(n))
(17 - 18) ÷ (4.5 / √48))
-1 ÷ 0.6495190
= -1.5396
= -1.540 (3 decimal places ).
Assuming that the 1.5 is in miles you must add 1.5 to 5.25 because you are looking for the previous elevation of the plane before it descended giving you an answer of 6.75 miles.
<span>If the bulk price is 18, then 36% of 18 is 6.48, which makes the final price 18 + 6.48 = 24.48</span>
27.50 x 4 = 110
27.50 x 5 = 137.5
Answer:
see explanation
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
In each question sum the 3 angles and equate to 180
3
a.
x + 8x + 90 = 180
9x + 90 = 180 ( subtract 90 from both sides )
9x = 90 ( divide both sides by 9 )
x = 10
b
4x - 5 + 3x + 11 + 90 = 180
7x + 96 = 180 ( subtract 96 from both sides )
7x = 84 ( divide both sides by 7 )
x = 12
4.
4x + 2x + 11 + 19 = 180
6x + 30 = 180 ( subtract 30 from both sides )
6x = 150 ( divide both sides by 6 )
x = 25
5.
5x + 20 + 2x - 5 + 3x - 10 = 180
10x + 5 = 180 ( subtract 5 from both sides )
10x = 175 ( divide both sides by 10 )
x = 17.5