Answer:
24
Step-by-step explanation:
Using curved parentheses (not square brackets) and * for multiplication and / or ÷ for division, a Google or Bing search box will evaluate such expressions for you according to the Order of Operations.
_____
2[(14 -3) + (4 x 4 x 4) /4] - 2.5 x 12
= 2((11) + 64/4) - 30 . . . . . evaluate inside inner parentheses, to final multiplication
= 2(11 +16) - 30 . . . . . division before addition
= 2·27 -30 . . . . add inside parentheses
= 54 -30 . . . . . .multiplication before addition
= 24
The probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%
Given here,
Mean (μ) = 3 years 6 months
= (3×12)+6 = 42 months
Standard deviation (σ) = 9 months
We will find the z-score using the formula: z = (X - μ)/σ
Here X₁ = 2 years 3 months
= (2×12)+3 = 27 months
and X₂ = 3 years 3 months
= (3×12)+3 = 39 months
So, z (X₁ =27) =
and z (X₂ =39) =
According to the standard normal table,
P(z> -1.666...) = 0.0485 and P(z< -0.333...) = 0.3707
So, P(27 < X < 39)
= 0.3707 - 0.0485
= 0.3222
= 32.22 % [Multiplying by 100 for getting percentage]
So, the probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%
1000 = x^3
1000 cube root = x
10 = x
10*10 = 100
100*10 = 1000
Hope this helped, and please make me brainlest! :)
Well, this is my type of answer.
30+60min=90min(history+english)
1/4=maths
3/4=history+english
90min/3=30min(his math homework)