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hram777 [196]
3 years ago
6

PLEASE HELP ME but only answer if you're gonna show work thank you!!

Mathematics
1 answer:
rosijanka [135]3 years ago
3 0
The factors of the given expression are x , x - 2 and x - 4

V(x)= x^{3}-  6x^{2}+8x \\  \\ 
V(x)=x( x^{2} -6x+8) \\  \\ 
V(x)=x( x^{2} -2x-4x+8) \\  \\ 
V(x)=x[x(x-2)-4(x-2)] \\  \\ 
V(x)=x(x-2)(x-4)

So the expression for height and length are x and x - 4
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A random sample of 25 statistics examinations was selected. The average score in the sample was 76 with a variance of 144. Assum
Mazyrski [523]

Answer:

99% confidence interval for the population average examination score is between a lower limit of 69.2872 and an upper limit of 82.7128.

Step-by-step explanation:

Confidence interval = mean +/- margin of error (E)

mean = 76

variance = 144

sd = sqrt(variance) = sqrt(144) = 12

n = 25

degree of freedom (df) = n - 1 = 25 - 1 = 24

confidence level (C) = 99% = 0.99

significance level = 1 - C = 1 - 0.99 = 0.01 = 1%

t-value corresponding to 24 df and 1% significance level is 2.797

E = t×sd/√n = 2.797×12/√25 = 6.7128

Lower limit = mean - E = 76 - 6.7128 = 69.2872

Upper limit = mean + E = 76 + 6.7128 = 82.7128

99% confidence interval is (69.2872, 82.7128)

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3 years ago
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7 0
3 years ago
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What is 7 times as much as the sum of 1/3 + 4/5
riadik2000 [5.3K]
Lets write the problem info into an equation and solve step by step:
7(1/3 + 4/5)
the minimum common multiple of 3 and 5 is 15, so we multiply and divide the fractions by a proper number to convert them to be divided by 15 so is easier to add them:
<span>(1/3)(5/5) = (1*5)/(3*5) = 5/15
(4/5)(3/3) = (4*3)/(5*3) = 12/15
</span>so we substitute in the original equation:
7(1/3 + 4/5<span>)
</span>= 7(5/15 + 12/15<span>)
= 7(17/15)
= (7*17)/15
= 119/15</span>
8 0
3 years ago
A fire is sighted Due West of Lookout A. The bearing of the fire from Lookout B, 6.5 miles due south of A, is North 35°34'W. How
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4 0
3 years ago
What is equivalent to ln(e^3)
malfutka [58]

Answer:

3

Step-by-step explanation:

The natural log is the inverse of the exponential (and vise versa), so ln(e^3) = 3.

(This is the also same as e^(ln3))

4 0
3 years ago
Read 2 more answers
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