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Harrizon [31]
3 years ago
14

QUICK can anyone help me. Big points for right answers.

Mathematics
1 answer:
klemol [59]3 years ago
7 0
No13.
Answer:
Cos(x+x)=cosx*cosx-sinx*sinx
=cos2(x)-sin2(x)
=(cosx+sinx)(cosx-sinx)
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The last one is $30 which one ?
12345 [234]

Answer:

it may be 30

Step-by-step explanation:

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Four percent of the welds on an automobile assembly line are defective. The defective welds are found using an X-ray machine. Th
Helga [31]

Answer:

a ) See Annex

b) P₁  =  0,0464       or    P₁  =  4,64 %

c) P₄  = 0,92   or   P₄  = 92 %

Step-by-step explanation:

b) P₁ [ X being defective ]  =  P₂   +   P₃

Where P₂  is the probability of X rays machine detects a weld defective and the weld is really defective

And  P₃  is the probability of X rays machine detects a weld defective and the weld is not defective

Then

P₂  =  0,04 *  0,92  =  0,0368

P₃  =  0,96 * 0,01  = 0,0096

Then  P₁  =  0,0368  +  0,0096

P₁  =  0,0464       or    P₁  =  4,64 %

c) P₄ = 0,04 *0,92

P₄  = 0,92   or   P₄  = 92 %

7 0
3 years ago
estimate each sum or difference to the nearest whole numbers. then calculate the exact sum or difference....58.02-15.27-3.76
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Answer:

38.99

Step-by-step explanation:

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42.75 - 3.76 = 38.99

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55

Step-by-step explanation:

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