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Feliz [49]
2 years ago
7

Could I get some help on this please and thank you!

Mathematics
1 answer:
motikmotik2 years ago
3 0

Answer:

60 students

Step-by-step explanation:

(See attached file below)

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Five thousand tickets are sold at​ $1 each for a charity raffle. Tickets are to be drawn at random and monetary prizes awarded a
Elis [28]

Answer:

The expected value of this raffle if you buy 1​ ticket is $0.41.

Step-by-step explanation:

The expected value of the raffle if we buy one ticket is the sum of the prizes multiplied by each of its probabilities.

This can be written as:

E(X)=\sum p_iX_i

For example, the first prize is $800 and we have only 1 prize, that divided by the number of tickets gives us a probability of 1/5000.

If we do this with all the prizes, we can calculate the expected value of a ticket.

E(X)=\sum p_iX_i\\\\\\E(X)=\dfrac{1\cdot800+3\cdot200+5\cdot50+20\cdot20}{5000}\\\\\\E(X)=\dfrac{800+600+250+400}{5000}=\dfrac{2050}{5000}=0.41

7 0
3 years ago
The total number of forks dropped by customers per day at a busy restaurant is multimodal with a mean of 24.5 and a standard dev
Misha Larkins [42]

Answer:

i got A   (0.088)   i haven't found out if i got it right but thats what i got

Step-by-step explanation:

6 0
3 years ago
Profit or loss question..please solve this​
Yuki888 [10]

<em>Answer:</em>

<em>I would say he makes 10.5%</em>

<em>Step-by-step explanation:</em>

<em />

<em>Let the price at which the shopkeeper bought the article be 100. </em>

<em>Since he has to make a profit of 30%, he would mark the price as 130. </em>

<em>Now, he allows a discount of 15% i.e. 15% of 130 = 19.5 </em>

<em>The actual discounted price= 130–19.5= 110.5 </em>

<em> </em>

<u><em>He gets 10.5 on 100. The profit percent he makes is 10.5%</em></u>

5 0
3 years ago
Simplify the radical expression.
GREYUIT [131]

Answer:

c

Step-by-step explanation:

160 = 16 * 10 =  4 * 4 * 2 * 5 = 2 * 2 * 2 * 2 * 2 *5

-4\sqrt{160} = -4\sqrt{2*2*2*2*2*5}\\\\= -4*2*2\sqrt{2*5}\\\\= -16\sqrt{10}

5 0
3 years ago
Read 2 more answers
What is the volume enclosed by the slanted prism in the diagram? A. 225 cm3 B. 270 cm3 C. 300 cm3 D. 540 cm3
Leokris [45]

Answer:

<h2>A. 225 cm3</h2>

Step-by-step explanation:

The volume of a slanted prism is defined as the product between the area of its base and its height.

Remember that height is the distance from the top to the bottom, reaching that bottom with a perpendicular angle.

So, in this case, the height is 9 cm, and the area of the base is 25 square centimeter.

This means the volume is

V=Bh=25cm^{2}(9cm)=225cm^{3}

Therefore, the right answer is A.

4 0
4 years ago
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