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nlexa [21]
3 years ago
8

PLEASE HELP!

Mathematics
2 answers:
Drupady [299]3 years ago
8 0
The last two methods listed are likely to be biased. 

The third one, sampling 30 boards in a row an hour after production starts, does not take a very large sample.  Additionally, if something in the machinery is defective only later in the day, the data will be misleading.  Similarly, if the machinery is only faulty until it "warms up," the data will be misleading.

The last method, the voluntary survey, is likely to only get responses from people that feel very strongly one way or the other about their product.  Choosing only 5 responses from this is also not the best choice, as that is an extremely small sample.
Serga [27]3 years ago
5 0

Answer:

C,D

Step-by-step explanation:

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A carpenter is building a rectangular shed with a fixed perimeter of 54 ft. What are the dimensions of the largest shed that can
lutik1710 [3]

Answer:

the Largest shed dimension is 13.5 ft by 13.5 ft

Largest Area is 182.25 ft²

Step-by-step explanation:

Given that;

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L + B = 54/2

L + B = 27 ft

B = 27 - L ------------Let this be equation 1

Area A = L × B

from equ 1, B = 27 - L

Area A = L × ( 27 - L)

A = 27L - L²

for Maxima or Minima

dA/dL = 0

27 - 2L = 0

27 = 2L

L = 13.5 ft

Now, d²A/dL² = -2 < 0

That is, area is maximum at L = 13.5 using second derivative test

B = 27 - L

we substitute vale of L

B = 27 - 13.5 = 13.5 ft

Therefore the Largest shed dimension = 13.5 ft by 13.5 ft

Largest Area = 13.5 × 13.5 = 182.25 ft²

7 0
2 years ago
Please help with this table
Lyrx [107]

Answer:

10

Step-by-step explanation:

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7 0
2 years ago
What is the general term equation, an, for the arithmetic sequence 5, 1, −3, −7, . . . , and what is the 21st term of this seque
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General term:

an = nth term = 5+(n-1)(-4)

Thus, the 21st term is 5+(21-1)(-4) = 5 + (20)(-4) = -75 (answer)
6 0
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lara [203]
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x = 0.1
4 0
3 years ago
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