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Contact [7]
3 years ago
6

I. What is 42% of 18? need help fast!

Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

It is 7.56!

Other:

Brainliest? Thanks!

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If x / 5 = y, what is 2x?
tino4ka555 [31]
<u>x / 5  =  y</u>

Multiply each side by  5 :    x  =  5y

Multiply each side by  2 :   <em>2x  =  10y</em>
6 0
3 years ago
What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the num
forsale [732]
(-4)^2-4(1)(5)
16-4(1)(5)
16-4(5)
16-20
-4

The discriminant is negative so there are no real number solutions.
3 0
3 years ago
Read 2 more answers
NEED HELP ASAP!! don’t wanna fail my math quiz
tatyana61 [14]

Answer:

\frac{2}{3}

Step-by-step explanation:

8 0
3 years ago
Service calls arriving at an electric company follow a Poisson distribution with an average arrival rate of 5656 per hour. Find
liberstina [14]

Answer:

The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.

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. The variance is the same as the mean.

Average rate of 56 calls per hour:

This means that \mu = 56n, in which n is the number of hours.

Find the average and standard deviation of the number of service calls in a 15-minute period.

15 minute is one fourth of a hour, which means that n = \frac{1}{4}. So

\mu = 56n = \frac{56}{4} = 14

The variance is also 14, which means that the standard deviation is \sqrt{14} = 3.74

The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.

4 0
3 years ago
A function is created to represent the costs of living per person in the family. What restrictions would be made to the domain?
olganol [36]

Answer:

2) The domain would only include positive integers

Step-by-step explanation:

y cost for x person

x can't be negative or fraction.

5 0
3 years ago
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