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3 years ago

PLEASE HELP ASAP!! ILL MARK BRAINLIEST!

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

7 0

I am 99% sure it is B. because all of the others work out correctly

allochka39001 [22]3 years ago

4 0

B is the correct answer. A,C, and D will all give you the correct slope.

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Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).

Ivenika [448]

Answer:
7x+5y +29= 0
Step-by-step explanation: first we have to find slop of the line that is.( Y2-Y1)/x2-x1
M = slope = 4+3)/-7+2
M= 7/-5
Equation of line y - y 1 = M (X - X1)
Y+3 = 7/-5 (x+2)
7x + 5y +29 =0 Ans .

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1 year ago

Please help with this problem!

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3 years ago

What is y-2=-3x(x-7) written in standard form?

Len [333]

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The equation in standard form is

−

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8 0

3 years ago

Express x3 + 4x2 – 45x in factored form.

kolbaska11 [484]

15 is the answer it is correct can

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3 years ago

The promising alternative energy sources currently under development are fuel cell technology and large-scale solar energy power

Mumz [18]

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

4 0

2 years ago