Does anyone know why x is normally used for an unknown number?

Mathematics

1 answer:

jeka943 years ago

7 0

Then you are able to substitute in X and it can have a infinite number of values catered to the question.

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What is the median of the data set given below? 26, 39, 18, 21, 24, 48, 21, 35

sergiy2304 [10]

To find the Median, place the numbers you are given in value order and find the middle number. <span>If there are two middle numbers, you average them.
</span><span>18, 21, 21, 24, 26, 35, 39, 48

The two middle number are 24 and 26
Average 24 + 26/2 = 25
The median is 25
</span>

6 0

2 years ago

Read 2 more answers

I NEED HELP ASAP:

olga55 [171]

First, you have to do some factorization

60 = {1,2,3,4,5,6,10,12,15,20,30,60}
72 = {1,2,3,4,6,8,9,12,18,24,36,72}

the GCF is 12

now we find the number that you multiply by 12 to get 60 and another number to get 72.

12 x 5 = 60
12 x 6 = 72

now we notice if you add 60 + 72, we can now tell that it also equals (12)(5)+(12)(6)= 12(5+6)

6 0

3 years ago

Question 1 x - 2.5 = -3

MAVERICK [17]

Answer:

x = -.5

Step-by-step explanation:

x - 2.5 = -3

Add 2.5 to each side

x - 2.5+2.5 = -3+2.5

x = -.5

8 0

2 years ago

A convex parabola is shown in a coordinate plane. The parabola connects the points left-parenthesis negative 4.5 comma 12 right-

spayn [35]

Since the parabola is connecting the points, it means that the points given are on the parabola or that the points are solutions of the parabola. Thus, when we substitute the points into the function, we should end up with the correct y-value.

To find the correct choice, let's test a point. An easy point to test I believe would be (-3, 0) because we should be getting 0 as a y-value. Let's test:

$A. (- 3 - 3)(3 + 4) = -42$

$B. (-3 + 3)(-3 - 4) = 0$

$C. (-3 + 2)(-3 - 4) = 7$

$D. (-3)(-3 + 12) = -27$

We can see that Choice B is the correct function, because it produces 0 when we substitute $x = - 3$ . Thus, Choice B, or (x + 3)(x - 4) is the answer.