Answer:
=−75x2+81.5x−1147.75
Step-by-step explanation:
simplify step-by-step.
x(80−75x)−(500+2(80−0.75x))−250−3(80−0.75)
Distribute:
=(x)(80)+(x)(−75x)+−500+(−2)(80)+(−2)(−0.75x)+−250+−3(80−0.75)
=80x+−75x2+−500+−160+1.5x+−250+−237.75
Combine Like Terms:
=80x+−75x2+−500+−160+1.5x+−250+−237.75
=(−75x2)+(80x+1.5x)+(−500+−160+−250+−237.75)
=−75x2+81.5x+−1147.75
All you do is change the mix number to and improper fraction. Add that once the denominator is the same then d divide it. Make the quotient as a decimal then add both decimal.
Answer:
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Step-by-step explanation:
![\left(g+h\right)\left(p+q-r\right)](https://tex.z-dn.net/?f=%5Cleft%28g%2Bh%5Cright%29%5Cleft%28p%2Bq-r%5Cright%29)
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![gp+gq-gr+hp+hq-hr](https://tex.z-dn.net/?f=gp%2Bgq-gr%2Bhp%2Bhq-hr)
Hope it helps!
Given Information:
Population = n = 800
Probability = p = 68% = 0.68
Answer:
We can say with 68% confidence that 568 lies in the range of (518, 570) therefore, it would not be unusual to get 568 consumers who recognize the Dull Computer Company name.
Step-by-step explanation:
Let us first find out the mean and standard deviation.
mean = μ = np
μ = 800*0.68
μ = 544
standard deviation = σ = √np(1-p)
σ = √800*0.68(1-0.68)
σ = 13.2
we know that 68% of data fall within 2 standard deviations from the mean
μ ± 2σ = 544-2*13.2, 544+2*13.2
μ ± 2σ = 544-26.4
, 544+26.4
μ ± 2σ = 517.6, 570.4
μ ± 2σ = 518, 570
We can say with 68% confidence that 568 lies in the range of (518, 570) therefore, it would not be unusual to get 568 consumers who recognize the Dull Computer Company name.
Answer: A. 5040
Step-by-step explanation: 7*6*5*4*3*2*1