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Mamont248 [21]
2 years ago
14

Mapping diagram: Is it a function? (yes / no ) Why or why not?

Mathematics
1 answer:
sashaice [31]2 years ago
5 0
<h3>It is a function</h3>

Why? Because each input maps to <u>exactly one</u> output. The input oval represents the domain (set of all possible inputs). The output oval is the range, which is the set of all possible outputs. If we had something like the input 0 mapping to the outputs 2 and 4 at the same time, then we wouldn't have a function.

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Solve for x 3x+3/x-4 = 3x+2/x+4
Lerok [7]

Answer:

here you go! with step by step so you can do it next time

5 0
3 years ago
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X + 4 is prime x2 – 9 can be factored using the formula.
Anna71 [15]

We are given two binomials: x+4 , x^2-9.

x+4 can't be factored. Therefore,  it is a prime.

Let us work on x^2-9.

9 could be written as 3^2.

Therefore, x^2-9 = x^2 - 3^2.

Now, we can apply difference of the squares formula to factor it.

We know a^2 -b^2 = (a-b) (a+b).

Therefore,  x^2 - 3^2 can be factored as (x-3) (x+3).

So, x^2-9 is not a prime binomial because it can be factored as (x-3) (x+3).

3 0
3 years ago
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Can someone please solve this by graphing​
balu736 [363]

XY - X + 2Y -2 =X(Y-1) + 2(Y-1) = 2X(Y-1)

4 0
2 years ago
Lucy rolls 2 fair dice and adds the results from each.
stellarik [79]

Answer:

The probability is 7/36

Step-by-step explanation:

In this question, we are tasked with calculating the probability that when we roll two fair dice, the sum of two numbers on both dies equal to 5.

Before we go on answering the question, we need to know the number of elements in our sample space. What this means is that we need to know the number of results we can have. The total number of results we can have is 6 * 6 = 36

Now, the next thing to know is how many of our results would yield a multiple of 5 each. Now let’s look at the attachment for the tabular representation we have.

Now, looking at our table, we can see that we have 7 circled results where we have a possibility of a multiple of 5.

The probability is thus the number of these additions divided by the total number of outputs= 7/36

7 0
3 years ago
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Samantha can complete her homework in 3/5 of an hour her brother can complete it in 5/6 of that time what part of an hour does i
s2008m [1.1K]
I think it takes her brother 30 minutes to complete his homework.

Because 3/5 of an hour is 36/60

5/6 = 30/36

Hope this helps! :)
4 0
2 years ago
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