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Sedaia [141]
3 years ago
13

Select the points that lie on function h (x) = 3x^2

Mathematics
1 answer:
Mariulka [41]3 years ago
6 0
The points that lie on function h (x) = 3x² is, " (1, 3) and (-1, 3)".


You can put the values in to the equation of the abscissas of the ordered pair and solve for h(x)
A. (1, 3)   ;    h(x) = 3(1²) = 3     Equal B. (-1, 3)  ;    h(x) = 3(-1)² = 3   EqualThus, these are the points that lie on function h(x ) = 3x²
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Answer:

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Step-by-step explanation:

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6 The area of a square is 32.5 square inches. Which best represents the length of one side of the square? F 32.5 -16 in. 16 . 5
laiz [17]

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A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company prod
tekilochka [14]

Answer:

C) 515 hours.

D) 500 hours

c) sample 3

Step-by-step explanation:

1. Sample 2 mean = x2`= ∑x2/n2= 2060/4= 515 hours

Sample Service Life (hours)

1                2              3

495      525            470

500         515           480

505        505            460

<u>500         515             470        </u>

<u>∑2000     2060         1880</u>

x1`= ∑x1/n1= 2000/4= 500 hours

x2`= ∑x2/n2= 2060/4= 515 hours

x3`= ∑x3/n3= 1880/4=  470 hours

2. The mean of the sampling distribution of sample means for whenever service life is in control is 500 hours . It is the given mean in the question and the limits are determined by using  μ ± σ , μ±2 σ  or μ ± 3 σ.

In this question the limits are determined by using  μ ± σ .

3. Upper control limit = UCL = 520 hours

Lower Control Limit= LCL = 480 Hours

Sample 1 mean = x1`= ∑x1/n1= 2000/4= 500 hours

Sample 2 mean = x2`= ∑x2/n2= 2060/4= 515 hours

Sample 3 mean = x3`= ∑x3/n3= 1880/4=  470 hours

This means that the sample mean must lie within the range 480-520 hours but sample 3 has a mean of 470 which is out of the given limit.

We see that the sample 3 mean is lower than the LCL. The other  two means are within the given UCL and LCL.

This can be shown by the diagram.

8 0
2 years ago
I need help with this ?
algol [13]

Answer:

[ - 2, - 7 ]

Step-by-step explanation:

8 0
2 years ago
Help please!!! Solve the inequality. Show your work.
Rashid [163]
| r + 3 | > 7

r + 3 > 7       r + 3 < -7
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so, r > 4 and r < -10
==========================
what percent of 60 is 12
percent formula : is/of = %/100
percent = x
is = 12
of = 60
now sub
12/60 = x/100
cross multiply
60x = 12 * 100
60x = 1200
x = 1200/60
x = 20%


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3 years ago
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