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3 years ago

14

A theme park uses positive numbers to represent when a roller coaster is above ground and negative numbers to represent when a r

oller coaster is below ground. How would the theme park represent a roller coaster that is 3 meters below ground?

1 answer:

elixir [45]3 years ago

8 0

Answer:

-3 meters

Step-by-step explanation:

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Completează tabelul de mai jos:

KiRa [710]

I’ll what is this language

4 0

3 years ago

What is the value of 30-2(7+2)-1

Firdavs [7]

Answer: 11

Step-by-step explanation:

30 - 2(7+2)- 1 Distribute or solve parentheses

30 - 14 -4 - 1

30 - 19 = 11

6 0

3 years ago

The number of typing errors made by a typist has a Poisson distribution with an average of three errors per page. If more than t

damaskus [11]

Answer:

0.6472 = 64.72% probability that a randomly selected page does not need to be retyped.

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.

Poisson distribution with an average of three errors per page

This means that $\mu = 3$

What is the probability that a randomly selected page does not need to be retyped?

Probability of at most 3 errors, so:

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)$

In which

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

$P(X = 0) = \frac{e^{-3}*3^{0}}{(0)!} = 0.0498$

$P(X = 1) = \frac{e^{-3}*3^{1}}{(1)!} = 0.1494$

$P(X = 2) = \frac{e^{-3}*3^{2}}{(2)!} = 0.2240$

$P(X = 3) = \frac{e^{-3}*3^{3}}{(3)!} = 0.2240$

Then

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.0498 + 0.1494 + 0.2240 + 0.2240 = 0.6472$

0.6472 = 64.72% probability that a randomly selected page does not need to be retyped.

3 0

2 years ago

Matt had 5 library books. He checked out 1 additional book every week without retuening any books. Whats the matching equation

photoshop1234 [79]

Answer:

The equation would be y = x + 5, in which x is the number of weeks and y is the number of books he has.

Step-by-step explanation:

We know this because even at 0 weeks, he still has 5 books. Therefore we put this as the constant at the end. Then we can add the number of weeks since the rate is one book per week.

5 0

3 years ago

Hat is the value of the expression –5x4 when x = –2?

sleet_krkn [62]

$\bold{Hey\ there!}$

$\bold{Assuming,\ you\ meant: -5(-2)^4}$

$\bold{If\ so\ follow\ these\ steps\downarrow}$
$\bold{(-2)^4=16}$
$\bold{(-5)\times 16=-80}$
$\boxed{\boxed{\bold {Thus,\ your\ answer\ is: -80}}}\checkmark$

$\bold{Good\ luck\ on\ your\ assignment\ \& \ enjoy\ your\ day!}$

~ $\frak{LoveYourselfFirst:)}$

7 0

3 years ago