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3 years ago

A coin is flipped 8 times. Find the probability of the event exactly: 8 heads

Mathematics

2 answers:

PSYCHO15rus [73]3 years ago

4 0

8\16 because there are 2 possibilities each coin flip

kykrilka [37]3 years ago

3 0

(1/2)^8=0,0039 --> 0,39%

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Show two ways three peoples can share a 5 segment chewy worm

Elden [556K]

5/3 as a fraction or 1 2/3 segments per person.

5 0

3 years ago

URGENT NEED HELP WITH A MATH QUESTION

irakobra [83]

Answer:

The image of point P is (1 , -1)

Step-by-step explanation:

- If point (x , y) rotated about the origin by angle 90° anti-clock wise

∴ Its image is (-y , x)

- If point (x , y) rotated about the origin by angle 90° clock wise

∴ Its image is (y , -x)

- If point (x , y) rotated about the origin by angle 180°

∴ Its image is (-x , -y)

* There is no difference between rotating 180° clockwise or

anti-clockwise around the origin

* Lets solve the problem

∵ P = (-1 , -1)

∵ P is rotated about the origin 90° counterclockwise

- Lets use this rule:

If point (x , y) rotated about the origin by angle 90° counterclockwise

then Its image is (-y , x)

∵ x-coordinate of point P = -1

∴ y-coordinate of the image of point P is -1

∵ y-coordinate of point P is -1

∴ x-coordinate of the image of point P is 1

- Lets write the image of point P

∴ The image of point P is (1 , -1)

8 0

4 years ago

a middle school has a speech club with a total of 36 students. The ratio of girls to boys is 4:5. How many girls are in the spee

andrezito [222]

The ratio is 4:5 meaning out of 9 students 4 are girls and 5 are boys. If there are 36 students, 9 will go into 36 four times so if we multiply each number of the ratio by 4 it gives us the answer.

4:5
4x4 = 16
5x4 = 20

The ratio is 16:20

16 girls to 20 boys... 16 +20 = 36

5 0

3 years ago

What is the general form of the equation for the given circle centered at O(0, 0)?

eduard

The general form of such an equation is
x^2 + y^2 = r^2 where r = radius

In this case r^2 = 4^2 + 5^2 = 41

So the required equation is x^2 ^ y^2 = 41

B

4 0

3 years ago

Read 2 more answers

Tomb trees are standing side-by-side in the sunlight one is 50 feet tall and the other is 20 feet tall if the taller tree cast a

8090 [49]

Answer: Length of shorter tree = 7.2 feet .

Step-by-step explanation:

Given : Height of two trees as 50 feet and 20 feet.

At same time the angle made by sun rays would be same for both trees.

Both trees are vertical to the ground making right angle so triangles made by both triangles must be similar.

Corresponding sides of similar triangles are proportional.

So $\dfrac{\text{length of the shadow of the shorter tree}}{\text{height of shorter tree}}=\dfrac{\text{length of the shadow of the bigger tree}}{\text{height of bigger tree}}\\\\=\dfrac{\text{length of the shadow of the shorter tree}}{20}=\dfrac{18}{50}\\\\\Rightarrow\ \text{length of the shadow of the shorter tree}=\dfrac{18}{50}\times20\\\\\Rightarrow\ \text{length of the shadow of the shorter tree} = 7.2$

So, Length of shorter tree = 7.2 feet .

7 0

3 years ago