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2 years ago

For which set of probabilities would events A and B be independent?

Mathematics

2 answers:

SVETLANKA909090 [29]2 years ago

8 0

Answer:

Step-by-step explanation:

alukav5142 [94]2 years ago

7 0

Answer:

P(A) = 0.30; P(B) = 0.20; P(A and B) = 0.06

Two events (A and B) are independent if the probability of the intersection is the

same as the product of each individual probability: P(A and B) = P(A) · P(B).

Step-by-step explanation:

That's sad that the brainliest went to someone that didn't even answer.

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Game 1 gives you 200 points every time you score. Game 2 doubles your points every time you score (2, 4, 8, and so on). In which

nignag [31]

Its depends on how many times you score during the game

in second game the number of points increases as a geometric sequence
with common ratio 2

so for example if you score ten times in first game you get 2000 points

if you score 10 times in Game 2 you score 2 * (2^10) - 1 = 2046 points

so playing 10 or more games is best with Game 2. Any less plays favours gane 1.

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2 years ago

Trains A and B, 200 km apart on the same straight track, travel at speeds of 50 km/hr and 65 km/hr respectively. At the end of 1

Gwar [14]

Answer:

Ok, at the beginning the distance between the trains is 200km:

IPa(0s) - P(0s)I = 200km.

where Pa is the position of train A, and Pb is the position of train B.

Now, the speed of train A is:

Sa = 50km/h

Sb = 65km/h

Now, remember the relation:

Distance = Speed*time.

So, in one hour, the displacement of train A is:

Distance = 50km/h*1h = 50km

The displacement of train B is:

distance = 65km/h*1h = 65km.

Now, if at the beginning train A is 200km ahead of train B, then we have:

Pa - Pb = (Pa(0s) + 50km) - (Pb(0s) + 65km)

= (Pa(0s) - Pb(0s)) + (50km - 65km) = 200km - 15km = 185km.

Now, if train B was 200km ahead of train A, we have:

Pb - Pa = (Pb(0s) + 65km) - (Pa(0s) - 50km) =

(Pb(0s) - Pa(0s)) + (65km - 50km) = 200km + 15km = 215km

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2 years ago

A store charges 7% sales tax. Which expression can be used to find the total cost of an item with a price of p? 0.07p 0.93p 1.07

Zanzabum

If you have an item that costs 10 dollars and a sales tax of 7% you could do it this way

10 * 7/100 = 0.70 dollars.

The total cost is 10.70 dollars. or 10 dollars and 70 cents.

The best way to do the total however is to multiply the cost by 1.07. You will get the number the customer has to pay.

10 * 1.07 = 10.70

So for any price (p) it would be 1.07*p

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2 years ago

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Susan plans to use 120 feet of fencing to enclose a rectangular area for a garden. Which equation best models the area, y, of th

mina [271]

Well we set the perimeter to 120 feet.
This means that 2x+2y=120
Now we know the area of a rectangle is xy so we have to solve for both x and y in the perimeter equation.

2x=120-2y
x=60-y

2y=120-2x
y=60-x

Now we plug these values into our area equation A=xy to get:
A=(60-y)(60-x)

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2 years ago

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ΔMNO was dilated, then _____________, to create ΔYHQ.

lesya [120]

Rotated

<h2>Explanation:</h2>

Remember you have to write complete questions in order to find good and exact answer. So in this case I'll provide a general explanation and say that the blank can be filled with the word rotated. First of all, when dilating objects we reduce or enlarge the size of them. It's important to know the scale factor because this tells use whether the object will be larger or smaller, so if we call $k$ the scale factor, then:

If k > 0 then the object will be larger than the original.
If k < 0 then the object will be smaller than the original.

Moreover, the center of dilation is the point where all the lines that meet corresponding points of the original and dilated figure.

On the other hand, to rotate a shape we turn it about a fixed point that we call the center of rotation. So, in this case we'll have that ΔMNO is similar to ΔYHQ.

<h2>Learn more:</h2>

Dilation:

#LearnWithBrainly

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2 years ago

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