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4 years ago

6

Please help me in this, it’s important

1 answer:

aivan3 [116]4 years ago

6 0

Answer: $137.50

Step-by-step explanation:

$\frac{550}{4} =137.50$

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What is the length of side AB?

soldi70 [24.7K]

Answer:

6

Step-by-step explanation:

i have had this question before and got it right

4 0

4 years ago

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Police estimate that 25% of drivers drive without their seat belts. If they stop 6 drivers at random, find the probability tha

Furkat [3]

Answer:

17.80% probability that all of them are wearing their seat belts.

Step-by-step explanation:

For each driver stopped, there are only two possible outcomes. Either they are wearing their seatbelts, or they are not. The drivers are chosen at random, which mean that the probability of a driver wearing their seatbelts is independent from other drivers. So we use the normal probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Police estimate that 25% of drivers drive without their seat belts.

This means that 75% wear their seatbelts, so $p = 0.75$

If they stop 6 drivers at random, find the probability that all of them are wearing their seat belts.

This is $P(X = 6)$ .

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 6) = C_{6,6}.(0.75)^{6}.(0.25)^{0} = 0.1780$

17.80% probability that all of them are wearing their seat belts.

3 0

3 years ago

Read 2 more answers

ASAP!!!! 10 POINTS!!!!

S_A_V [24]

Completing the Square

2. Solve the equation by completing the square. Show your work.

x^2 – 30x = –125

Step 1: Add to both sides of the equation. (2 points)

Add 225 both sides of the equation

x^2 – 30x + 225 = –125 + 225

x^2 - 30x + 225 = 100

Step 2: Factor the left side of the equation. Show your work. (2 points)

Hint: It is a perfect square trinomial.

x^2 - 30x + 225 = 100

Factor the left side of the equation:

(x - 15)^2 = 100

Step 3: Take the square root of both sides of the equation from Step 2. (1 point)

√(x - 15)^2 = √100

Step 4: Simplify the radical and solve for x. Show your work. (1 point)

x - 15 = + - 10

x - 15 = 10

x = 25

x - 15 = -10

x = 5

Solutions x = 25, 5

3 0

4 years ago

HELP PLZ It is your turn to wash the dishes. When you are finished, you begin to drain the water from the sink. The water's drai

Georgia [21]

Answer:

The rate of change is -0.75

Step-by-step explanation:

For each unit of <em>t</em> the volume of water is decreasing by 0.75.

At <em>t</em>=13.333 the volume of water is 0. at <em>t</em>=0 the volume of water is 10

Hope this helps

5 0

3 years ago

Evaluate: 4!<br> Make sure to show your steps.

sergeinik [125]

Answer:

4! = 4 x 3 x 2 x 1

4! = 12 x 2 x 1

4! = 24 x 1

4! = 24

Let me know if this helps!

7 0

3 years ago

Read 2 more answers