3 years ago

PLS HELP!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Artemon [7]3 years ago

4 0

Answer:

second option, (u - 12 - 3b)/4

Step-by-step explanation:

isolate the "a" by bring each term to the other side, and finally div by 4

u = 12 + 4a + 3b

u - 12 = 4a + 3b

u - 12 - 3b = 4a

(u - 12 - 3b)/4 = a

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Answer:

P [ K > 3.95] = 0.5633

Step-by-step explanation:

The interpretation of the given question goes thus;

Suppose that K is a random variable

P[-3.95 ≤ K ≤ 3.95] = 0.725

where; P [ + 3.95 < K ] = P [K < - 3.95]

P[K< 3.95] - P [K > - 3.95] =0.725

P [K < 3.95] - [ 1- P[K < 3.95]] = 0.725

P[k < 3.95] - 1 + P [ K < 3.95] = 0.725

3.95 P [ K < 3.95] -1 = 0.725

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P [ K < 3.95] = 1.725/3.95

P [ K < 3.95] = 0.4367

P [ K > 3.95] = 1 - P[K< 3.95]

P [ K > 3.95] = 1 - 0.4367

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