6x+1 / 2x +6 - 5/2
Factor 2 out of the denominator of the first fraction:
6x+1 / 2(x+3) - 5/2
Rewrite 5/2 to have a common denominator with the first fraction:
6x+1/2(x+3) - 5(x+3) / 2(x+3)
Simplify terms:
6x +1 - 5(x+3) / 2(x+3)
Use distributive property:
6x +1 - 5x -15 / 2(x+3)
Combine like terms for final answer:
(x-14) / 2(x+3)
6 d x 24<span> hr = 144 hr 144 hr </span>x 60 min<span> = 8640 </span>min<span> 16 hr </span>x 60 min<span> = 960 </span>min<span> 8640 </span>min<span> + 960 </span>min<span> + 34 </span>min<span>= 9634 </span>min<span>. In the first </span>conversion<span>, we used </span>24 hours<span> because there are </span>24 hours<span> in a ... </span>Convert<span> 4 gallon 3 quarts </span>1 pints<span> into </span>pints<span>. ... For example, larger to smaller units still </span>multiply<span> and smaller to larger units still </span>divide<span>.</span>
The answer for the question is 21
Too many questions to be typed out ... I did it on the paper instead.
Answer:
a) 0.2347, 0.0007
b) 1.30
c) 0.63
Step-by-step explanation:
Given –
Mean = 73.4
Sigma = 4.7
Probability that the speed is greater than 70 is
P (X>70) = P (z> (70-73.4)/4.7) = P (z>-0.72) = 0.7653
a) The probability that a car is not speeding = 1 - 0.7653 = 0.2347
The probability that all 5 cars are not speeding = (0.2347)5 = 0.0007
b) E (X) = 1/p = 1/0.7653 = 1.30
c) Standard deviation = Sqrt (1-p/p) = (1-0.7653)/0.7653 = 0.63