MATHEMATICS HIGH SCHOOL

An auction website charges $1 for a bid. The bidding starts at 1¢ and goes up 1¢ at a time. A television that is worth $2000 is won, on average, with a bid of $160. You make one bid at random.Find the expected value of the outcome of the bid. (Write as an exact decimal, with a negative sign, if necessary.)

Expected Value: $ _____

Answers

Answer 1
Answer:

Answer:

The answer is: expected value is -$0.88

Step-by-step explanation:

Given is, the he bidding starts at 1¢ and goes up 1¢ at a time. A television that is worth $2000 is won, on average, with a bid of $160. So, $160 in 1¢ steps means 16000 bids.

Therefore, a person invest $1 with a 1/16000 probability of a $2000 return.  

Noe, the expected value will be =  -1+((1)/(16000))*2000

= -1+0.125 = -0.875 ≈ -$0.88

Hence, the answer is -$0.88
Answer 2
Answer: $12.50/-$12.50, if I am wrong i am sorry

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Identify the range of the function. A) (2, 8) B) [2, 8] C) (−5, 9) D) [−5, 9]

Answers

Answer:

The answer is "Option A"

Step-by-step explanation:

The domain is the collection of the value, which belongs to the separate variable (horizontal axis). So, to find a region with a graph, it must search for the function, which starts and end. And at all these levels we are searching at x-values.  

Its starting point is (2,9) and the ending point is (8,3).  Therefore, x= 2 to x=8 is the domain.

A student playing a computer chess game gets 5 points every time he wins a round. The computer gets 3 points every time it wins a round. They play 64 rounds and end with a tied score. How many rounds did the computer win?

Answers

I am sorry but i don't know, But the student won 32 times. I did the math on paper and then on my calculator. I am really sorry i couldn't help you. 'ω' Hope you do good on this question and again sorry i could not help you.

Write an equation of a line that passes through the given point and has slope m
(-4,3) m=2

Answers

y - y₁ = m(x - x₁)
y - 3 = 2(x - (-4))
y - 3 = 2(x + 4)
y - 3 = 2x + 8
  + 3         + 3
     y = 2x + 11

HELP PLEASE 15 POINTS!!A student is attempting to simplify the exponent shown below. Which statement best applies to the sample mathematical work?
given (2x/y)^9* (x/3)^2
Step 1: I first apply the exponent in the left term, which gives the quantity 8x^3/y^3
Step 2: I next apply the exponent in the right term, which gives the quantity x^2/9
Step 3: I combine the two terms from Step 1 and Step 2 and simplify to get a final answer of 8x^6/9y^3

A.
The student incorrectly applies the exponent in Step 1.
B.
The student incorrectly applies the exponent in Step 2.
C.
The student incorrectly combines the results from Steps 1 and 2 in Step 3.
D.
The mathematical work shown is correct.

Answers

first step is wrong
y^9≠y^3


A is the answer

Answer:

I took the test. the answer is not A it is C. The student incorrectly combines the results from Steps 1 and 2 in Step 3

A pilot flew a jet from City A to City B, a distance of 1700 miles. On the return trip, the average speed was 20% faster than the outbound speed. The round-trip took 5h 40 min. What was the speed from City A to City B?________ mi/h

Answers

The answer is about 650 mi/h
I'm going to round it off so its going to be 650 mi/h

The price of a plane ticket has increased from $150 to $200. By what percent has the price increased? A) 15%
B) 25%
C) 33%
D) 50%

Answers

Answer:

The answer is the option C

33\%

Step-by-step explanation:

we know that

\$150 ------> represent the 100\%

so

by proportion

Find what percent has the price increased

(100)/(150)(\%)/(\$)=(x)/(200-150)(\%)/(\$) \n \nx=(200-150)*100/150\n \nx=50*100/150\n \nx=33.33\%
There is a formula to figure out questions like this:

The price difference/ the original price and times the whole equation by 100 (to get the percentage).

> ($50/$150) x 100 = 33% (rounded)
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