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maxonik [38]
3 years ago
7

Suppose we went to choose 2 letters without replacement from 3 letters a b and c

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
3 0

Answer:

6 ways -  ab,ac, ba,bc and ca,cb

Step-by-step explanation:

We are given 3 letters a,b,c.

We can choose the first letter in 1 out of 3 ways.

Once the first letter has been chosen without replacement, we have two letters remaining. Another letter can be chosen from the 2 remaining letters in  2 ways. So the total number of ways of choosing the two letters is 3*2 = 6.

Listing out the possible set of choices:

Options include: ab,ac, ba,bc and ca, cb

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Mr. Hartman, the school librarian, is ordering new keyboards and mice for all of the school's computer labs. Each keyboard costs
mario62 [17]

Answer:

3 * 20s

Step-by-step explanation:

In order to find out how much Mr. Hartman will spend in total we first need to multiply the price of the keyboard and mouse by the number of computers in a single computer station. Once we have these products we add them together. Finally, we multiply this new value by 3 since there are a total of 3 computer stations. If we turn this into an expression it would be the following...

3 * (13.50s + 6.50s)

We can even simplify this by first adding the cost of the keyboard and mouse and then multiplying by s

3 * 20s

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3 years ago
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Pavlova-9 [17]

Answer:

-94%, -0.925, -9/10, -8/9

Step-by-step explanation:

-94% = -0.94

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Since the values are negative the order is opposite then if they were all positive.

8 0
3 years ago
solve quadratic by taking square roots. as=a,-a where a and -a the values you found when when solving. Round to nearest tenth. 2
attashe74 [19]

Answer:

8.1

Step-by-step explanation:

2x^2 -9 = 121

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2x^2 = 130

/2         /2

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x= sqrt (65)

x= 8.06225...

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6 0
3 years ago
The relationship between the number of $12 DVDs you buy and the total cost. I need to know if it is linear or solid.
11111nata11111 [884]

Answer:

I'm a bit confused with your question.

Maybe this guy Sayurki can help ! He said this - "Set of unconnected points because you can't buy a part of a DVD in a line there are infinite points and when buying something such as a DVD to reach that infinite u need to be able to buy part of a DVD which technically isn't possible so that why is unconnected points u buy a full DVD not part "

Step-by-step explanation:

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3 years ago
PLEASE HELP. THANK You SO MUCH. ANSWER IF YOU KNOW ONLY
Fudgin [204]

Answer:

irdk so ima say b

Step-by-step explanation:

6 0
3 years ago
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