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3 years ago

The probability of NOT A. A) P(A) B)P(AnB) C)P(A) D)P(AUB)

Mathematics

2 answers:

Mariana [72]3 years ago

6 0

Answer:

Step-by-step explanation:

scoray [572]3 years ago

5 0

Answer: A or C

The probability of every event is at least zero.

(For every event A, P(A) >= 0. There is no such thing as a negative probability.)

The probability of the entire outcome space is 100%.

(P(S) = 100%. The chance that something in the outcome space occurs is 100%, because the outcome space contains every possible outcome.)

If two events are disjoint, the probability that either happens is the sum of the probabilities that each happens.

(If AB = {}, P(AUB) = P(A) + P(B).)

Step-by-step explanation:

the probability that an event A does not happen is 100% minus the probability that A happens:

My answer P(Ac) = 100% - P(A).

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Which equation represents a circle whose center is located at (- 6, 2) and whose radius is sqrt(10) units?

azamat

Answer:

${(x + 6)}^{2} + {(y - 2)}^{2}=10$

Step-by-step explanation:

The equation of a circle with center (a,b) and radius r, is

${(x - a)}^{2} + {(y - b)}^{2} = {r}^{2}$

From the question, the center of the circle is located at (-6,2) and the radius is

$r = \sqrt{10}$

We substitute the center and radius to get:

${(x - - 6)}^{2} + {(y - 2)}^{2} = {( \sqrt{10} })^{2}$

Simplify to obtain:

${(x + 6)}^{2} + {(y - 2)}^{2}=10$

7 0

3 years ago

A spherical exercise ball has a maximum diameter of 30 inches when filled with air. The ball was completely empty at the start,

Alex73 [517]

Answer:

A) A(t) = 4500*π - 1600*t

B) A(4) = 7730 in³

C) t = 8,8 sec

Step-by-step explanation:

The volume of the sphere is:

d max = 30 r max = 15 in

V(s) = (4/3)*π*r³ V(s) = (4/3)*π* (15)³

V(s) = 4500*π

A) Amount of air needed to fill the ball A(t)

A(t) = Total max. volume of the sphere - rate of flux of air * time

A(t) = 4500*π - 1600*t in³

B) After 4 minutes

A(4) = 4500*π - 6400

A(4) = 14130 - 6400

A(4) = 7730 in³

C) A(t) = 4500*π - 1600*t

when A(t) = 0 the ball got its maximum volume then:

4500*π - 1600*t = 0

t = 14130/1600

t = 8,8 sec

8 0

2 years ago

−2∣5w−7∣+9=−7 What is the 2 answers for this question

loris [4]

The two possible answers are w = 3 and w = -1/5

These answers can be obtained through solving to the absolute value symbols.

−2∣5w−7∣+9=−7 ---> subtract 9 from both sides
−2∣5w−7∣= -16 ---> divide both sides by -2
∣5w−7∣= 8

Now, because of the absolute value symbols, set the inside equal to 8 and -8 for the two answers.

5w - 7 = 8
5w = 15
w = 3

AND

5w - 7 = -8
5w = -1
w = -1/5

5 0

3 years ago

What is the solution to the equation 5 (x minus 6) = 2 (x + 3)?

Reika [66]

The answer is x=12 :))

8 0

3 years ago

Julie wanted to earn money to attend a basketball camp. She started with a gift of money from her grandparents and then saved $2

adoni [48]

The equation would be y = 25x + 50

In order to find this equation, we need to know how much the gift from her grandparents was. To do so, we have to find out how much she's saved from dog walking.

Since she saves $25 a month for 7 months, we can find the total amount as:

25*7 = 175

Then we can subtract that from the total she has saved to find the amount for the gift.

225 - 175 = 50

Finally, we put the amount per month in the equation with the gift as the y intercept to create the equation above.

6 0

3 years ago