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3 years ago

Hey can someone help me with this ASAP this is really hard

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

3 0

U should come up with the equation 13+1.50x=35.50
the x representing the amount of rides and the one point five represents the cost of the rides
solve the equation and it should give u the answer which should be x=15.
the amount of rides is 15 rides after paying for the entrance( took this answer from someone )

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Add the opposite of 2 1/2 to the sum of 1.25 and (−1 3/4 ). PLS help right now.

Alja [10]

Answer:

i belive it is 13.25

Step-by-step explanation:

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4 years ago

The heights of women aged 20 to 29 follow approximately the N(64, 2.72) distribution. Men the same age have heights distributed

Softa [21]

The z-score for men at 64 inches is:
$z=\frac{64-69.3}{2.84}=-1.866$
Using a standard normal distribution table, we can see that the cumulative probability for a z-score of -1.866 is 0.031.
The answer is 3.1%.

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4 years ago

The probabilities that stock A will rise in price is 0.59 and that stock B will rise in price is 0.41. Further, if stock B rises

Reil [10]

Answer:

1) 0.75

2) No, the 2 events are not mutually exclusive because P(A&B) ≠ 0

3)The 2 events are not independent because P(A | B) ≠ P(A).

Step-by-step explanation:

1) P(A) = 0.59 and P(B) = 0.41

Thus; to find the probability that at least one of the stocks will rise in price;

P(A or B) = P(A) + P(B) - P(A&B)

Now, we know that if B rises in price, the probability that A will also rise is 0.61 i.e P(A|B) = 0.61

Hence;P(A & B) = P(A|B) x P(B) =0.61 x 0. 41 = 0.25

So P(A or B) = 0.59 + 0.41 - 0.25 = 0.75

B) we want to find out if events A and B are mutually exclusive ;

P(A|B) = P(A&B)/P(B), For the events to be mutually exclusive, P(A&B) has to be zero. Since P(A&B) ≠ 0,the 2 events are not mutually exclusive.

C) Since P(A|B) = 0.61 and P(A) is 0.59. Thus, P(A | B) ≠ P(A).

So, therefore the 2 events are not independent.

8 0

3 years ago

Two integers have a sum of -11 and a difference of 5. What are the two

Rudiy27

Answer:

x = -3

y = -6

Step-by-step explanation:

x+y = -11

x-y = 5

x+y+x-y= -6

2x= -6

x = -3

y = -6

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3 years ago

Bob's monthly bill is made up of a $10 fee plus $0.05 per minute. Write an expression that represents Bob's monthly phone if he

Salsk061 [2.6K]

Answer:

10 + 0.05m; m = 350 minutes

Bob's phone bill will be $27.50

Step-by-step explanation:

$10 + ($0.05 x 350 minutes) = $27.50

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3 years ago