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Aleonysh [2.5K]
2 years ago
6

what is 2 plus 2 what is 2 plus 2 what is 2 plus 2 what is 2 plus 2 what is 2 plus 2 what is 2 plus 2 what is 2 plus 2 what is 2

plus 2
Mathematics
2 answers:
snow_tiger [21]2 years ago
7 0

Answer:32  when you add them all together

Step-by-step explanation:

add them a

Taya2010 [7]2 years ago
6 0

Answer:

Step-by-step explanation:

2+2 = 4 :33

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Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the nu
Basile [38]

Answer:

a) 0.8841

b) 0.0435

Step-by-step explanation:

A : the set of joints deemed defective by inspector A.

B: the set of joints deemed defective by inspector B.

U: the set of all joints.

The problem says |A|=724, |B|=751, |A∪B|=1159, |U|=10000. Hence, with the help of Venn diagram we can answer the following:

Part a)

This asks for the number of joints that are ∉(A∪B).

hence,

P (∉(A∪B)) :

\frac{10000-1159}{10000} \\\\=0.8841

part b)

This asks for the number of joints that are in B but not in A, which Is represented as the set B−A

= \frac{|B| - |AandB| }{|U|}\\\\=  \frac{751-316 }{10000}\\\\= 0.0435

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miskamm [114]

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Find the sum of the even integers from 20 to 50.<br><br><br>with solutions please help​
alina1380 [7]

Answer: 560

Step-by-step explanation:

There are [20, 22, 24, 26, 28]: 5 even integers for each ten numbers.

The 20's set can be written as 5*20 + (2+4 + 6 + 8) = 5*20 + (20) = 120

The 30's can be written: 5*30 + 20 = 170

40's: 5*40+20 = 220

50's: 5*50+20 = 270

60's: 5*60+20 = 320

Each set is incremented by 50

We want the sets for 20, 30, and 40, plus the number 50.

(120+170+220+50) = 560

You can also do this in Excel (attached). Set the first cell to 20, the next cell below equal to the cell above plus 2. Then draw the second cell down until you've reached 50. Then sum the cells to arrive at 560.

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