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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 rectangular field is 27 meters long and 18 meters wide. If fencing costs $12 per yard how much will it cost to enclose the fie
KiRa [710]

Find the perimeter of the field:

The dimensions are given in meters.

Perimeter = 27 +27 +18 +18 = 90 meters.

The price is given in price per yards, so now convert meters to yards:

1 meter = 1.09361 yards

90 meters x 1.09361 = 98.4252 yards.

Now multiply total yards by price per yard:

98.4252 x 12 = $1,181.10

4 0
3 years ago
-9 X / -6 what is the solution to this problem
jenyasd209 [6]

Answer:

-3x/2

Step-by-step explanation:

-9x/6

=-3x/2

Hope it helps

5 0
3 years ago
(24 + 4) ÷ 2 = (24 ÷ 2) + ( __ ÷ 2)<br><br> i dont know this
tensa zangetsu [6.8K]

Answer:

4

Step-by-step explanation:

(24+4) ÷ 2 = (24 ÷ 2) + (4 ÷ 2)

28÷2 = 14

Check:

24÷2 = 12

4÷2 = 2

12+2=14

3 0
3 years ago
Read 2 more answers
Solve this system
madam [21]

Answer:

Its the first option

Step-by-step explanation:

4 0
3 years ago
4x + 3 = -5x -7 cual es el<br> Valor de x ?
yan [13]
4x + 3 = -5x - 7                        Add 5x to both sides.
4x + 3 + 5x = -5x - 7 + 5x
9x + 3 = -7                               Subtract 3 from both sides.
9x + 3 - 3 = -7 - 3
9x = -10                                    Divide both sides by 9
9x / 9 = -10 / 9
Your answer can either be 1.11111... or it would be x = -10/9
7 0
4 years ago
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