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2 years ago

On a 20 sided dice what is the probability that a 11 was rolled?

Mathematics

1 answer:

Sedbober [7]2 years ago

3 0

Given:

A 20 sided dice is rolled.

To find:

The probability of getting 11.

Solution:

A 20 sided dice is rolled.

On a 20 sided dice, the possible outputs are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

Total number of outcomes = 20

Favorable outcomes or number of 11 = 1

Now,

$\text{Probability of getting 11}=\dfrac{\text{Favorable outcomes}}{\text{Total number of outcomes}}$

$\text{Probability of getting 11}=\dfrac{1}{20}$

$\text{Probability of getting 11}=0.05$

Therefore, the probability of getting 11 is 0.05.

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The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9

mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

The height $h(t)$ of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation $h(t) = 3 +90\cdot t -16\cdot t^{2}$ , where $t$ is time in seconds. After how many seconds will the ball be 84 feet above the ground.

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

$3+90\cdot t -16\cdot t^{2} = 84$

$16\cdot t^{2}-90\cdot t +81 = 0$ (1)

By Quadratic Formula:

$t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}$

$t_{1} = 4.5\,s$ , $t_{2} = 1.125\,s$

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0

2 years ago

Pls answer fast, i need to go to friends but parents wont let me.

Tanya [424]

Answer:

line C

Step-by-step explanation:

The equation would be

y= 1/2x

So that means the slope is 1/2

Starting at (0,0) we would go up 1 and over 2

That would be point (1,2)

That is the purple line, line C

4 0

3 years ago

Best has knitted 5/8 of the scarf she is making has she needed more than one half of the scarf can't find the equivalent fractio

BabaBlast [244]

To compare 5/8 and 1/2, you will need to create fractions that have the same denominator. 1/2 is the same as 4/8.

5/8 is greater than 4/8, so she had knitted more than 1/2.

4 0

2 years ago

Help me i think its add 24 to both sides

umka2103 [35]

It is given in the question that

Steven is solving the equation

$3(8-2x)+40=34$

He begins with the following two steps.

$Step 1: 3(8)+3(-2x)+40=34 Step 2: 24-6x+40=34$

And we have to find , what will be the next step in solving the equation.

First we combine the like terms. And the like terms are 24 and 40. So we have to add 24 and 40. And that will be the next step.

So the correct option is the last option.

8 0

2 years ago

I have 50 to spend at beach. A kayak cost 5 per hour to rent. I buy lunch for 8.50. I want to save 15 for food later. How many h

Gekata [30.6K]

Answer: you can rent the kayak for 5.3 hours

Step-by-step explanation:

Total amount of money that you have to spend at the beach is 50.

A kayak cost 5 per hour to rent. This means that if you rent the Kayak for X hours, the amount that you will spend would be 5×x = 5x. I buy lunch for 8.50. I want to save 15 for food later. This means that total amount of money spent is the sum of money spent in renting the kayak and buying of lunch.

Total amount spent = 5x + 8.50

Total amount spent + Total amount that you want to save = Total amount of money that you have to spend at the beach. Therefore

5x + 8.50 + 15 = 50 - 15 - 8.5 = 26.5

x = 26.5/5 = 5.3

8 0

2 years ago