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lana [24]
3 years ago
5

I need to know how to do these!!

Mathematics
2 answers:
Oxana [17]3 years ago
8 0
This is rise or run, y is the y intercept and x is the slope. since only x is showing the y intercept is 0. -4/5 is the fraction for the slope, so basically the top number (-4) is rise or fall (fall because it is negative) you count 4 down, the number on the bottom is (-5) which is run so you either go right or left, so it is negative so left. so you will have a point at 0 and in (-5,-4). hope this helps!!!
Aloiza [94]3 years ago
6 0
The four would go under neith in the left hand side but I don’t know how to explain it
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Answer:

Step-by-step explanation:

a) Denote the event of commercially availability of f_uel cell technology as F_, commercial availability of solar power technology as S

Write the probability of energy supplied by these energy sources in the next 10 years  

P(energy supplied) = P(S ∪ F) -----(1)

Rewrite eqn (1)

P(energy supplied) = P(S) + P(F) - P(F) P(S) ----(2)

substitute 0.85 for P(S) and 0,7 for P(F) in eqn (2) to find the probability of energy supplied by these energy sources

P(energy supplied) = 0.85 + 0.7 - (0.7 * 0.85)

= 0.85 + 0.7 - (0.595)

= 1.55 - 0.595

= 0.955

Therefore, the probability that there will be energy supplied by these two alternative sources in the next 10 years is 0.955

B) write the probability of only one source of energy available

P(only one source of energy available) = P(\bar F S) ∪ P( \bar S F) ---(3)

Rewrite the equation (3)

P(only one source of energy available) =

=P(\bar F S)+P(\bar S F)\\\\=\{[1-P(F)]P(S)+[1-P(S)]P(F)\}---(4)

=\{[1-0.7]0.85+[1-0.85]0.7\}\\\\=0.255+0.105\\\\=0.36

Therefore,The probability that only one of the two alternative energy sources will be commercially viable in the next 10 years is 0.36

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Step-by-step explanation:

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