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vredina [299]
3 years ago
15

consider the equation a(4-x) =-3x + b What values of a and b make the solution of the equation x = -5

Mathematics
1 answer:
-BARSIC- [3]3 years ago
3 0

Answer:

Step-by-step explanation:

hello :

put x = -5 in this equation : a(4-x) =-3x + b

a(4+5) =15 + b

9a = 15 +b

b = 9a - 15

the values of a and b is all order  pair :   ( a  ; 9a-15)  a real number

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Mariana [72]
Hey there,

Your question states: <span>The coordinates of A, B, and C in the diagram are A(p, 4), B(6, 1), and C(9, q). Which equation correctly relates p and q? 

Your correct answer would be </span><span>D. p − q = 7 BECAUSE . . .we would have to back the number up because we would need to basically subtract </span>P-Q which would give you 7. So D.) would be your answer.

Hope this helps.

~Jurgen
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4 years ago
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4. Jenny works at a package delivery store.
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I think the answer is 525
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14. Suppose that 1 out of every 10,000 doctors in a certain region is infected with the SARS virus; in the same region, 20 out o
hram777 [196]

Answer:

The person in the at-risk population is much more likely to actually have the disease

Step-by-step explanation:

The probability of a randomly selected doctor having the disease is 1 in 1,000 (P(I)=0.0001).

The probability that a doctor is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.0001*0.99}{0.0001*0.99+(1-0.0001)*0.01}\\P(I|+)=9.9*10^{-3}

The probability of a randomly selected person from the at-risk population having the disease is 20 in 100 (P(I)=0.20).

The probability that a person in the at-risk population is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.2*0.99}{0.2*0.99+(1-0.2)*0.01}\\P(I|+)=0.962

Therefore, the person in the at-risk population is much more likely to actually have the disease

3 0
3 years ago
GEOMETRY
DiKsa [7]

The "if" part is the antecedent or hypothesis while the "then" part is the conclusion. The format is "if hypothesis, then conclusion". The given phrase can be translated to "If the number is even, then the number is divisible by 2"

Hypothesis: number is even

Conclusion: number is divisible by 2

That's why the answer is choice D

8 0
4 years ago
A bag has red, green, and blue marbles. The probability of selecting a red marble is 1/3 and the probability of selecting a gree
mr_godi [17]

Answer:

4/15

Step-by-step explanation:

There are red, green and blue marbles in the bag.  The total of all the probabilities of selecting red, green and blue marbles is 1.00, or just 1.

So, to find the probability of selecting a blue marble, we add together 1/3 and 2/5 and subtract the total from 1:

1 - (1/3 + 2/5)

or:

1 - (5/15 + 6/15)

or:

1 - 11/15, or 4/15 (answer)

4 0
3 years ago
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