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Degger [83]
3 years ago
8

What is the answer to this equation 1) 4(x + 5) = 40

Mathematics
1 answer:
Airida [17]3 years ago
5 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

4(x + 5) = 40

Divide sides by 4

\frac{4}{4}  \times (x + 5) =  \frac{40}{4}  \\

x + 5 = 10

Subtract sides 5

x + 5 - 5 = 10 - 5

x = 5

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

CHECK :

4(5 + 5) = 40

4 \times 10 = 40

40 = 40

Thus the solution is correct.

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Done...

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IrinaVladis [17]

Answer:

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Step-by-step explanation:

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2 years ago
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Events A1, A2 and A3 form a partiton of the sample space S with probabilities P(A1) = 0.3, P(A2) = 0.5, P(A3) = 0.2.
timurjin [86]

Answer:

Step-by-step explanation:

Given that events A1, A2 and A3 form a partiton of the sample space S with probabilities P(A1) = 0.3, P(A2) = 0.5, P(A3) = 0.2.

i.e. A1, A2, and A3 are mutually exclusive and exhaustive

E is an event such that

P(E|A1) = 0.1, P(E|A2) = 0.6, P(E|A3) = 0.8,

P(E) = P(A_1E)+P(A_2E)+P(A_3E)\\= \Sigma P(E/A_1) P(A_1) \\= 0.1(0.3)+0.5(0.6)+0.8(0.2)\\= 0.03+0.3+0.16\\= 0.49

P(A_1/E) = P(A_1E)/P(E) = \frac{0.3(0.1)}{0.49} \\=0.061224

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4 0
3 years ago
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