Answer:
∴ ∑₁⁸i = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Step-by-step explanation:
Given:
To Find:
∑₁⁸i =?
Solution:
Σ This symbol called Sigma means "summation up"
∴ ∑ n mean sum for all n
But if ∑₁³n means Sum for n=1 , 2 ,and 3 ADD
∴ ∑₁³n = 1 + 2 + 3
∴ ∑₁⁸i = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Answer:
(155.301 ; 159.299)
Step-by-step explanation:
Xbar = 157.3
Sample size, n = 234
Population standard deviation, σ = 15.6
The confidence interval :
Xbar ± standard Error
Standard Error = Zcritical * σ/√n
Zcritical at 95% = 1.96
Standard Error = 1.96 * (15.6/√234) = 1.999
Lower boundary : 157.3 - 1.999 = 155.301
Upper boundary : 157.3 + 1.999 = 159.299
(155.301 ; 159.299)
Answer:
15/8 alphas = 1 gamma
Step-by-step explanation:
4 gammas = 5 beta
beta = 4/5 • gamma
2 betas = 3 alphas
beta = 3/2 • alpha
beta = beta
4/5 • gamma = 3/2 • alpha
multiply each side by 5/4
5/4 • 4/5 • gamma = 5/4 • 3/2 • alpha
gamma = 15/8 • alpha
Uhhhhhhhhhhhhhhhhhhhuhhhhhhhhhhhhhh
1 meter = 3.28 ft. 3
3.28 * 3.2 = 10.496
10.496 rounds up to 10.50
3.2 meters = 10.50 feet.
