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2 years ago

The gates of an amusement park are closely monitored to determine whether the number of

Mathematics

1 answer:

fredd [130]2 years ago

3 0

Answer:

Maybe how many people are in the park

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The amount $0.8982 rounded to nearest cent is?

Butoxors [25]

Answer:

It would be rounded to $0.90

Step-by-step explanation:

The 9 would make the 8 go up to $0.90

4 0

3 years ago

If a line has a slope of 4 and contains the point (-2,5), what is its equation in slope form?

melomori [17]

Answer:

y-y1=m(x-x1)

y-5=4(x + 5)

y-5=4x+20

5. 5

y = 4x + 25

6 0

2 years ago

HURRY!! WILL MARK BRAINLIEST!!

Alisiya [41]

Answer:

2, the second number line.

Step-by-step explanation:

-1 x 1/2 = -0.5

6 0

3 years ago

How many times does she expect to draw a marble that isn’t red

otez555 [7]

There is a 50/50 chance she does or doesnt take a red marble out the back so its most likely 40 times because of how there are other 2 colors and she is putting back the marbles in the bag

4 0

2 years ago

I roll a fair die twice and obtain two numbers X1= result of the first roll and X2= result of the second roll. Given that I know

azamat

By definition of conditional probability,

$P(X_1=4\text{ or }X_2=4\mid X_1+X_2=7)=\dfrac{P((X_1=4\text{ or }X_2=4)\text{ and }X_1+X_2=7)}{P(X_1+X_2=7)}$

$=\dfrac{P((X_1=4\text{ and }X_1+X_2=7)\text{ or }(X_2=4\text{ and }X_1+X_2=7))}{P(X_1+X_2=7)}$

Assuming a standard 6-sided fair die,

if $X_1=4$ , then $X_1+X_2=7$ means $X_2=3$ ; otherwise,
if $X_2=4$ , then $X_1=3$ .

Both outcomes are mutually exclusive with probability $\frac1{36}$ each, hence total probability $\frac2{36}=\frac1{18}$ .

Of the 36 possible outcomes, there are 6 ways to sum the integers 1-6 to get 7:

(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), (6, 1)

and so a sum of 7 occurs $\frac6{36}=\frac16$ of the time.

Then the probability we want is

$P(X_1=4\text{ or }X_2=4\mid X_1+X_2=7)=\dfrac{\frac1{18}}{\frac16}=\frac13$

6 0

3 years ago