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Tasya [4]
3 years ago
5

Which of these represent a function

Mathematics
1 answer:
tresset_1 [31]3 years ago
6 0

Answer:

Step-by-step explanation:

None of them

A has (5, 13) and (5,17) That's 2 y values for the same x. You can't have that. A fails the vertical line test.

B has two y values for x = - 3. The two values are (-3,-1) and (-3,1). Both values eliminate B as an answer.

C fails because -1 has 2 y values (-4,52) and (-4,?) We can't see the bottom, but it is another value. There is an x value we cannot see that has 45 as an answer along with -7 for x. That's fine.

If there is a D answer, you almost have to choose it. There isn't much choice.

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ryzh [129]

Answer:

false

Step-by-step explanation:

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3 years ago
What is the algebraic expression for "the difference between eleven times a number and four"?
marshall27 [118]

11n-4

I believe that is correct

7 0
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Read 2 more answers
Three years after paying $2800 in a startup company, you sell for $2200. The total percent return is what?​
masha68 [24]

Answer:

The total percentage return is 26.19

Step-by-step explanation:

Given as :

The amount paid for three years = $ 2800

So, Total amount paid for three years = $ 2800 × 3 = $ 8400

The return amount after three years = $ 2200

The time period = 3 years

Let the percentage return = x %

So, According to question

x % of $ 8400 = $ 2200

Or, x % = \frac{2200}{8400}

Or, \frac{x}{100} = \frac{11}{42}

∴  x = \frac{11}{42} × 100

I.e x = 26.19

Hence The total percentage return is 26.19 Answer

3 0
3 years ago
One over x+10 plus 20 over x squared - 100 =1
bagirrra123 [75]

Answer:

x=11

Step-by-step explanation:

3 0
2 years ago
You pick a card at random. Without putting the first card back, you
Inga [223]

First, we need the probability of picking an odd number.

There are 5 cards in total, and 3 odd cards (3, 5, and 7).

That means that the probability that we'll draw an odd card would be \frac{3}{5}.

Then, we have 4 cards left, and 2 even cards (4 and 6), meaning that the probability that we draw an even card will be \frac{2}{4} or \frac{1}{2}.

To find the probability that these would happen in consecutive draws, we just multiply the probabilities together.

\frac{3}{5}*\frac{1}{2}=\frac{3}{10} or 0.3.

To convert this into a percentage, we multiply the decimal by 100.

0.3*100=30.

So the probability of picking an odd number and then picking an even number is 30%.

Hope this helps!

8 0
3 years ago
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