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Alenkasestr [34]
3 years ago
6

In an experiment, a ball is drawn from an urn containing 12 purple balls and 13 green balls. If the ball is purple, two coins ar

e tossed. Otherwise three coins are tossed. How many elements of the sample space will have a purple ball? How many elements of the sample space are there altogether?
Mathematics
1 answer:
UNO [17]3 years ago
5 0

Answer:

4 elements of the sample space will have a purple ball

There are 10 elements altogether

Step-by-step explanation:

Probability is given by number of possible outcomes ÷ number of total outcomes

Number of purple balls = 12, number of green balls = 13, total number of balls = 12+13 = 25

Probability (a ball drawn is purple) = 12/25

If a purple ball is drawn, two coins are tossed

1 coin has 2 elements

2 coins have 2×2 = 4 elements

Probability (a ball drawn is not purple) = 1 - 12/25 = (25-12)/25 = 13/25

If a ball drawn is not purple, three coins are tossed

1 coin has 2 elements

3 coins have 3×2 = 6 elements

Total elements = 4 + 6= 10 elements

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9.) In a state with a sales tax of 7%, Hernando
alex41 [277]

Answer:

Final price = $79.16

Step-by-step explanation:

Given that:

Sales tax in the state  = 7%

Amount spent by Hernando = $73.98

Amount of sales tax = 7% of 73.98

Amount of sales tax = \frac{7}{100}*73.98

Amount of sales tax = 0.07 * 73.98

Amount of sales tax = $5.18

Final price = 73.98 + 5.18 = $79.16

Hence,

Final price = $79.16

5 0
3 years ago
Really need help<br> Hurryyyyyyy
hram777 [196]

Answer:

The Answer is B

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5 0
4 years ago
Mason is driving on a long road trip. He currently has 12 gallons of gas in his car. Each hour that he drives, his car uses up 1
egoroff_w [7]

After 2 hours it should have 9 gallons of gas left

6 0
3 years ago
If a polynomial function f(x) has roots 0, 3, and 2+ V5, what must also be a root of f(x)?
ddd [48]

Answer:

Option B.

Step-by-step explanation:

Note: Given roots are not in proper format.

Consider the polynomial function f(x) has roots 0, 3, and 2+\sqrt{15}.

According to irrational root theorem if a+\sqrt{b} is root of a polynomial P(x), then a-\sqrt{b} is also a root of polynomial P(x).

Since 2+\sqrt{15} is an irrational root of the function f(x). By irrational root theorem 2-\sqrt{15} is also a root of function f(x).

Therefore, the correct option is B.

6 0
3 years ago
Consider the situations in the table below ^^^
netineya [11]

Answer:

  ACBD

Step-by-step explanation:

Increases, gains, earnings, upward motion are all represented by positive numbers. Decreases, losses, spending, downward motion are all represented by negative numbers. Here are the sums:

A: -33.57 +14.98 = -18.59

B: 7 2/5 -3/5 = 7 +(2/5 -3/5) = 7 -1/5 = 6 4/5

C: 3 1/6 +2 1/2 = (3+2) +(1/6 +3/6) = 5 4/6 = 5 2/3

D: 23.66 -15.84 = 7.82

__

Least to greatest, their order is ...

  A (-18.59), C (5 2/3), B (6 4/5), D (7.82)

4 0
4 years ago
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