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kiruha [24]
3 years ago
11

An amusement park reports that the probability of a visitor riding its largest roller coaster is 30 percent, the probability of

a
visitor riding its smallest roller coaster is 20 percent, and the probability of a visitor riding both roller coasters is 15 percent.
Which equation can be used to calculate the probability of a visitor riding the largest or the smallest roller coaster?
P(largest or smallest) = 0.30 - 0.20
P(largest or smallest) = 0.30 + 0.15-0.20
P(largest or smallest) = 0.30 +0.20 -0.15
P(largest or smallest) = 0.30 + 0.20
Mathematics
2 answers:
11111nata11111 [884]3 years ago
5 0

Answer:

P(largest or smallest) = 0.30 + 0.20 - 0.15

Step-by-step explanation

You combine the chances of doing the largest and smallest, without the chance of riding both.

inessss [21]3 years ago
5 0

Answer:

P(largest or smallest) = 0.30 + 0.20 - 0.15

Step-by-step explanation:

You might be interested in
the sum of the digits of a two digit number is 7 when the digits are reversed, the number is 9 less than the original number. fi
Svetllana [295]

The two digit number is 43.

If flipped around, the number is 34, which is 9 less than 43. 4 + 3 = 7.


Hope this helps!

6 0
3 years ago
The Ferris wheel has a radius of 70 feet. The distance between the wheel and the ground is 4 feet. The rectangular coordinate sy
Gemiola [76]

Answer:

x² + (y-74)² = 4900

Step-by-step explanation:

Circle equation: (x-h)² + (y-k)² = r²

"h" refers to horizontal shifts while "k" refers to vertical shifts. If the center of the wheel is directly above the origin of the rectangular plane and the entire wheel is 4 ft. from the ground then:

  • h = 0
  • k = 74 (the radius + 4 ft.)
  • r = 70

So plugging those into the equation of circles, we get the answer above.

7 0
3 years ago
The number of responses to a survey are shown in the Pareto chart. The survey asked 1052 adults how they would grade the quality
Goryan [66]

Answer: (a) P(no A) = 0.935

              (b) P(A and B and C) = 0.0005

              (c) P(D or F) = 0.379

              (d) P(A or B) = 0.31

Step-by-step explanation: <u>Pareto</u> <u>Chart</u> demonstrates a relationship between two quantities, in a way that a relative change in one results in a change in the other.

The Pareto chart below shows the number of people and which category they qualified each public school.

(a) The probability of a person not giving an A is the difference between total probability (1) and probability of giving an A:

P(no A) = 1-\frac{68}{1052}

P(no A) = 1 - 0.065

P(no A) = 0.935

b) Probability of a grade better than D, is the product of the probabilities of an A, an B and an C:

P(A and B and C) = (\frac{68}{1052})(\frac{258}{1052})(\frac{327}{1052})

P(A and B and C) = \frac{5736888}{1164252608}

P(A and B and C) = 0.0005

c) Probability of an D or an F is the sum of probabilities of an D and of an F:

P(D or F) = \frac{269}{1052} +\frac{130}{1052}

P(D or F) = \frac{399}{1052}

P(D or F) = 0.379

d) Probability of an A or B is also the sum of probabilities of an A and of an B:

P(A or B) = \frac{68}{1052} +\frac{258}{1052}

P(A or B) = \frac{326}{1052}

P(A or B) = 0.31

7 0
3 years ago
Which expressions go in which box?
almond37 [142]
To qualify as a polynomial, the expression in question:
* Consists of one or more terms 
* Variables are only with positive whole exponents
* No variables in the denominator of any term (the coefficients however, can be fractions.)

In that case the answer is most likely:

3 0
3 years ago
G=-4x-4, solve for x
Snowcat [4.5K]

Answer:

G = -4x - 4

x = -1

Step-by-step explanation:

step 1: flip your equation and turn G into zero

ex: -4x - 4 = 0

step 2: add 4 to both sides

ex: -4x - 4 + 4 = 0 + 4   (-4x = 4)

step 3: divide both sides by -4

ex: -4x/-4 = 4/-4   (x = -1)

step 4: plug -1 into x then solve to check your answer

ex: -4(-1) - 4 = 0

4 - 4 = 0

0 = 0 (when this says 0 = 0 then that means your answer is always true)

4 0
2 years ago
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