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2 years ago

If the spinner lands on green 10 times out of 60 spins, which statement is true?

Mathematics

1 answer:

Elanso [62]2 years ago

7 0

Answer: The spinner lands on green 5 less times than expected.

Step-by-step explanation:

Assuming the spinner has 4 colors, the chance of it landing on green will be 25%.

If there are 60 spins, the expected number of times it should land on green is;

= 60 * 25%

= 15 times

It only landed on green 10 times which is 5 less times than expected.

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NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!! THIS IS NOT A TEST OR AN ASSESSMENT!! Please help me with these math questions

Art [367]

Answer:

See below

Step-by-step explanation:

3. What are two ways that a vector can be represented?

Considering a vector $\vec{v}$ in some vector space $\mathbb R^n$ we have

$\vec{v} = \langle a,b\rangle$

This is the component form. I don't like that way. It is probably used in high school, but

$\vec{v} = \begin{pmatrix} a\\ b\\ \end{pmatrix}$

is preferable because the inner product on $\mathbb R^n$ is defined to be

$\langle a,b\rangle := \sum_{i = 1}^n a_i b_i$

You can also write it using linear form such as $\vec{v} = 2i+2j$

For this question, I think you meant

vectors

$\vec{u_1} = (-8, 12)$

$\vec{u_2} = (13, 15)$

Once

$\cos(\theta)=\dfrac{\vec{u_1} \cdot\vec{u_2}}{||\vec{u_1}||||\vec{u_2}||}$

Considering that the dot product is

$\vec{u_1}\cdot \vec{u_2} = (-8)\cdot 13 + 12\cdot 15 = -104+180= 76$

and the norm of $\vec{u_1}$ is $||\vec{u_1}|| = \sqrt{(-8)^2 + 12^2} = \sqrt{64 + 144}= \sqrt{208}$

and the norm of $\vec{u_2}$ is $||\vec{u_2}|| = \sqrt{13^2 + 15^2} = \sqrt{169 + 225}= \sqrt{394}$

Thus,

$\cos(\theta)=\dfrac{76}{\sqrt{208} \sqrt{394}} = \dfrac{19}{\sqrt{13}\sqrt{394}}=\dfrac{19}{\sqrt{5122}}$

$\therefore \theta = \arccos \left(\dfrac{19}{\sqrt{5122}} \right)$

3 0

2 years ago

WILL MARK YOU BRAINLIEST HELP WITH BOTH IF YOU CAN

Anna71 [15]

Answer:

10) 51°

11) 152

Step-by-step explanation:

10) 42 + 9 = 51

11) 45(3.5) + 22(-.25) = 157.5 - 5.5 = 152

6 0

2 years ago

Read 2 more answers

List factors of 24 36 27 and 7

Helen [10]

Answer:

The factors of 7 are 1, and 7.

The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.

The factors of 27 are 1, 3, 9, and 27.

The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Step-by-step explanation: I hope this helps :).

8 0

1 year ago

suppose f(x)=33.3+1.4 log (x+1) models salinity of ocean water to depths of 1000 meters at a certain latitude. x is the depth in

larisa86 [58]

100.47 because: 33.3+1.4 =34.7
785+1=786
34.7log(786)=100.47

7 0

3 years ago

The graph below represents the price of sending video messages using the services of a phone company. What is the constant of pr

musickatia [10]

taylor is wrong the answer is 24

3 0

2 years ago