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mina [271]
3 years ago
12

If the graph of a quadratic function opens down, the function has a minimum value. true or false?​

Mathematics
1 answer:
DanielleElmas [232]3 years ago
5 0
This is a false statement
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Loan
diamong [38]
B

Explanation: I guessed and it was right
5 0
3 years ago
What is the circumference of a circle whose area is 121 pi square meters?
Contact [7]
I hope this helps you

5 0
3 years ago
The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. What is the probability that,
professor190 [17]

Answer:

0.2103 = 21.03% probability that, in any seven-day week, the computer will crash less than 3 times.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Mean of 0.6 times a day

7 day week, so \mu = 7*0.6 = 4.2

What is the probability that, in any seven-day week, the computer will crash less than 3 times? Round your answer to four decimal places.

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

In which

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-4.2}*(4.2)^{0}}{(0)!} = 0.0150

P(X = 1) = \frac{e^{-4.2}*(4.2)^{1}}{(1)!} = 0.0630

P(X = 2) = \frac{e^{-4.2}*(4.2)^{2}}{(2)!} = 0.1323

So

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0150 + 0.0630 + 0.1323 = 0.2103

0.2103 = 21.03% probability that, in any seven-day week, the computer will crash less than 3 times.

3 0
3 years ago
HELP ME!! WITH TWO OF THESE!! ASAP
algol13

Answer: Question 26: 39.2

Question 27: store B

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Roger made 8 1/2 quarts of hot chocolate. Each mug holds 1/2 of a quart. How many mugs will Roger be able to fill?
blondinia [14]
Number of mugs = 8.5/0.5=17
7 0
3 years ago
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