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Lostsunrise [7]

2 years ago

7

You have 12 coins of which you need to flip only 4 heads. If the probability of flipping heads is 35%, what is the probability t

hat you get only 4 heads? Please and thank you!

1 answer:

mel-nik [20]2 years ago

5 0

Answer:

33.3333333333

Step-by-step explanation:

One coin would equal over 11 more would be 8.3333333333 so time that by 4

GoodLuck

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See image for question.

kotegsom [21]

Answer:

<h3>#7</h3>

(a)

<u>Sample space:</u>

1*1, 1*2, 1*3, 1*4,
2*1, 2*2, 2*3, 2*4,
3*1, 3*2, 3*3, 3*4,
4*1, 4*2, 4*3, 4*4

Total 16 outcomes

(b)

(i) P(even) = 12/16 = 3/4
(ii) P(3x) = 7/16
(iii) P(perfect square) = 4/16 = 1/4

<h3>#8</h3>

(a) <u>Sample space:</u>

1T, 1H, 2T, 2H, 3T, 3H, 4T, 4H

Total 8 outcomes

(b)

(i) 1T, 3T

P(T and odd) = 2/8 = 1/4

(ii) 1H, 4H

P(H and square) = 2/8 = 1/4

(iii) 1H, 2H, 3H, 4H

P(H) = 4/8 = 1/2

6 0

3 years ago

Viefleur [7K]

Answer:

21 square units

Step-by-step explanation:

The sides of the rectangle are aligned with the coordinate grid, so we can easily find its dimensions.

AB lies on the line y = -2, so the horizontal extent is the difference in x-values:

6 - 3 = 3

BC lies on the line x = 6, so the vertical extent is the difference in y-values:

5 -(-2) = 7

The area is the product of these two dimensions:

A = LW = (7)(3) = 21 . . . . square units

The area of the rectangle is 21 square units.

3 0

2 years ago

Read 2 more answers

Have you ever been swimming in a pool, and your eyes were red when you get out this means the chemicals in the pool were not adj

kherson [118]

I like your words, Mr. Magicman

8 0

2 years ago

I need help.............

amid [387]

I didn’t know which problem you specifically needed help with, but I hope this helps.

7 0

2 years ago

The magnitude of vector a = (5,m) is 13 and the magnitude of vector b = (n, 24) is 25. What are m and n

Ulleksa [173]

Answer:

$m=12\,,n=7$

Step-by-step explanation:

The magnitude of vector $(x,y)$ is given by $\sqrt{x^2+y^2}$

The magnitude of vector $a=(5,m)$ is $13$ .

$\sqrt{5^2+m^2}=13\\5^2+m^2=13^2\\25+m^2=169\\m^2=169-25\\m^2=144\\m=12$

The magnitude of vector $b=(n,24)$ is $25$ .

$\sqrt{n^2+24^2}=25\\n^2+24^2=25^2\\n^2+576=625\\n^2=625-576\\n^2=49\\n=7$

Therefore,

$m=12\,,n=7$

5 0

3 years ago