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2 years ago

Can someone help me with this page?

Mathematics

2 answers:

Roman55 [17]2 years ago

6 0

Sure
i will help with the page if i can do it…

statuscvo [17]2 years ago

4 0

B is the first one
D
C
And finally (most likely) A

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Simplify these expressions: 12x - 3x

kkurt [141]

Answer:

12x-3x

= 9x

Step-by-step explanation:

Hope it is helpful....

4 0

2 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

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

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

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

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

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

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

3 0

2 years ago

The Senior class held an election for class president. Pamela received three (3) votes for every two (2) votes Angela received.

likoan [24]

Answer:

Step-by-step explanation:

Divide 69 by 3

69 / 3 = 23

Take it times two.

23 x 2 = 46

Proportion

$\frac{3}{2} =\frac{69}{x}$

Cross multiply and solve for x.

6 0

2 years ago

PLEASE HELP ME SO I CAN MOVE ON FROM THIS TOPIC

ExtremeBDS [4]

Answer:

3rd option

Step-by-step explanation:

( $\frac{f}{g}$ )(x)

= $\frac{f(x)}{g(x)}$

= $\frac{2x^2-5x-3}{2x^2+5x+2}$ ← factorise numerator and denominator

= $\frac{(x-3)(2x+1)}{(x+2)(2x+1)}$ ← cancel (2x + 1) on numerator/ denominator

= $\frac{x-3}{x+2}$

4 0

2 years ago

Which number is greater than 7.23 and less than 7.55? 7.59;7.17;7.6;7.3

Step2247 [10]

7.3 also written as 7.30

5 0

2 years ago