MATHEMATICS HIGH SCHOOL

Simplify the following expression: 35 + (–13) + (+8) – (–6). A. 36
B. 44
C. 50
D. 24

Answers

Answer 1
Answer: A. 36 is the correct answer

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The revenue, in dollars, of a company that produces jeans can be modeled by 2x2 + 17x – 175. The cost, in dollars, of producing the jeans can be modeled by 2x2 – 3x – 125. The number of pairs of jeans that have been sold is represented by x. The profit is the difference between the revenue and the cost, 20x – 50.If 75 pairs are sold, what's the company's profit? a)$500 b)$1,450 c)$1,500 d) $2,250

Spinner goes 1-4. Jose spins the spinner 8 times. In those 8 spins, the arrow never lands on 3. Based on this information, should Jose be concerned that the spinner is unfair? Explain.

Answers

If the spinner was fair, the probability of landing on 3 in a single spin is 1/4. The probability of never landing on 3 in 8 spins is (3/4)^8 = 0.1. The probability of landing on 3 at least once in 8 spins is 1 - 0.1 = 0.9.
Therefore Jose should be concerned that the spinner is unfair.
Well this is a more complicated question than it may seem. The laws of probability are based on observations whose number is very large or actually as the number of observations approaches infinity. So on the one hand, you should be concerned that you get 0/8 to land on 3. However, 42/500 land on 3 so your ratio has improved. It's not near 125 but it's also not 0. If it remained at 0, you would begin to be concerned and rightly so. Perhaps if you did 5000, you would be less concerned as the ratio improved and got closer to 1/4 of the observations. So at this point I don't think you have enough information to determine that the spinner is unfair.

Graph the Inequality.

Answers

Answer:

x ≤ -7

Step-by-step explanation:

There is a filled in circle which means that it is either ≤ or ≥.

The graph is going to the left, which means it is ≤

The starting number is -7.

x ≤ -7

Write 2350 million in standrard form

Answers

Step-by-step explanation:

2350 million

= 2350 000 000  =  2, 350, 000, 000.

What is the awnser to X/2=1/2x+5

Answers

Answer:x+10

Step-by-step explanation:

Is -2 or 4 a root of the equation x^2-2x=8?

Answers

I hope this helps you

How do you add degrees, minutes and seconds?

Answers

It isn't easy.  You just have to go slowly and keep your wits about you.

-- Add the seconds.  If the sum is more than 60, then take 60 off, write what's left
as seconds, and carry 1 minute next door to the minutes.

-- Add the minutes. If the sum is more than 60, then take 60 off, write what's left
as minutes, and carry 1 degree next door to the degrees.

-- Add the degrees.

You can use exactly the same procedure to add hours, minutes, and seconds
of time.
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