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Tema [17]
3 years ago
7

What is the value of this expression when x = -6 and y =1/2? 4(x^2 + 3) − 2y

Mathematics
1 answer:
Anna007 [38]3 years ago
8 0
155
-6^2= 36+3=39
4(39) -2(1/2)
156-1
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Grayson bought a rectangular waste basket that is 1 ½ feet long, ¾ foot wide, and 2 feet high. Find the volume of the surface of
trapecia [35]
Technically, the volume of the surface would be the surface area, but assuming that's what you're referring to, and that the thickness of the waste basket doesn't add any extra volume/area, this is how you would solve that:
SA=2(wh+lw+lh)                                 
SA=2[3/4(2)+1 1/2(3/4)+1 1/2(2)]
SA=2(1 1/2+1 1/8+3)
SA=2(45/8)
SA=11 1/4 ft

If there is no lid, you would subtract the lw:
SA=2(wh+lh)
SA=2[3/4(2)+1 1/2(2)]
SA=2(1 1/2+3)
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3 years ago
Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation o
Ad libitum [116K]
The probability will be found as follows:
z-score is given by:
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where:
mean-μ=9.3
standard deviation-σ=1.1 
but
σ/√n=1.1/√70=0.1315
thus the z-score will be:
z=(9.1-9.3)/0.1315
z=-1.5209
thus:
P(x<9.1)=P(z<-1.5209)=0.0643
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3 years ago
What is the standard deviation of the data set? 7, 3, 4, 2, 5, 6, 9 Round the answer to the tenths place.
Ainat [17]
The standard deviation would be A. 2.4
3 0
3 years ago
Read 2 more answers
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bonufazy [111]

Answer:

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3 years ago
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What pair of points have a slope of -3/5
sergey [27]

Answer:

(5,0) and (0,3) have a slope of -3/5

Step-by-step explanation:

Here, we want to state a pair of points that have a slope of -3/5

Mathematically, we can have the slope of a straight line calculated as;

m = y2-y1/(x2-x1)

This could give points like (5,0) and (0,3)

3 0
2 years ago
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