Answer:
The z score for the airplane arriving 13 minutes after arrival time is 0.33
Step-by-step explanation:
Using normal distribution,
The average lateness for one of the top airline companies is 10 minutes. So our mean, u = 10
The variance, s of the lateness measure is calculated as 9.
x =13 which stands for arrival time.
Using normal distribution,
z = (x - u)/s
z = (13 - 10)/9 = 3/9 = 0.33
The z score for the airplane arriving 13 minutes after arrival time is 0.33. The probability value of the z score can be found by looking at the Normal distribution table
(b). → Simplify: [{5^(x-+1) + 5^x}/{6×5^x}]
= [{5^(x+1+x)}/{6×5^x}]
= [{5^(2x+1)}/{6×5^x}]
= [{5^(2x+1)}/{6×5^x}]
= [{5^(2x+1-x)}/6]
= [{5^(x+1)}/6]Ans.
(c). 4a³b²
= 4(3)³(-2)²
Since, a = 3 and b = -2.
so,
= 4(3*3*3)(-2*-2)
= 4(27)(4)
= 108(4)
= 432Ans.
<u>also</u><u> </u><u>read</u><u> similar</u><u> questions</u><u>:</u> simplify 6/x-6+3x/x+5-1/(x-6)(x+5)..
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simplify the equation simplify x^5/8/x^1/6..
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Answer:
I got the third one DC=56
Step-by-step explanation:
It would be 45.83 because the 3 (in the hundredths place) would stay the same as opposed to rounding up to four.
The number of the board's price of $6.50 will be 12 and the number of the boards for the price of $9.50 will be 8.
<h3>What is an expression?</h3>
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division
Given that:-
The total cost of 20 boards is $166. one size costs $6.50, and the second size costs $9.50.
Let the number of the boards for the price of $6.50 is x and for $9.50 is y. So the expression will be given as:-
6.50x + 9.5 y = 166
x + y = 20
Put x = 20 - y
6.50( 20 - y) + 9.5y = 166
130 - 6.50y + 9.50y = 166
3y = 166 -30
3y = 36
y = 12
Now the value of x will be:-
x = 20 - y = 20 - 12 = 8
Therefore the number of the board's price of $6.50 will be 12 and the number of the boards for the price of $9.50 will be 8.
To know more about Expression follow
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