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Marina86 [1]
2 years ago
9

A b c or d? help me ​

Mathematics
2 answers:
kotegsom [21]2 years ago
7 0

Answer:

B.) \frac{1}{2} +8

Step-by-step explanation:

\frac{1}{2}-(-8)

A negative and a negative equals a positive. Remove parentheses and simplify

\frac{1}{2}+8

Done.

Ivahew [28]2 years ago
3 0
B. 1/2+8
The equation, 1/2- (-8) has two negatives which makes it a positive outcome so the 1/2 stays the same but now the -8 is now a positive 8. 1/2+8
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An automobile manufacturer obtains the microprocessors used to regulate fuel consumption in its automobiles from three microelec
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Answer:

The probability that a randomly selected automobile manufactured by the company will have a defective microprocessor is 6.2 %.

Step-by-step explanation:

Given:

The probability of getting a microprocessor from firm A is, P(A)=45\%=0.45

The probability of getting a microprocessor from firm B is, P(B)=30\%=0.30

The probability of getting a microprocessor from firm C is, P(C)=25\%=0.25

Now, let event D be having a defective microprocessor at random.

So, as per the question,

Probability of producing a defective microprocessor from firm A is, P(D/A)=6\%=0.06

Probability of producing a defective microprocessor from firm B is, P(D/B)=7\%=0.07

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Now, probability of having a defective microprocessor when selected at random is given as:

P(D)=P(A)\cdot P(D/A)+P(B)\cdot P(D/B)+P(C)\cdot P(D/C)\\P(D)=(0.45\times 0.06)+(0.30\times 0.07)+(0.25\times 0.055)\\P(D)=0.027+0.021+0.01375\\P(D)=0.06175\ or\ P(D)=0.06175\times 100\approx 6.2\%

Therefore, the probability that a randomly selected automobile manufactured by the company will have a defective microprocessor is 6.2 %.

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Answer c: 2 and 3


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That’s how you do it ☺︎︎

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