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Rudik [331]
3 years ago
13

Why do we use variables, and what is the significance of using them in expressions and equations?

Mathematics
1 answer:
Olin [163]3 years ago
5 0
Variables are letters from the end of the alphabet
Economics always uses the firsts letter of whatever that letter is representing.

<span> An </span>expression<span> such as 4x</span>3<span> is a </span>variable<span>. It can assume different values because x can assume different values.</span>
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Ranjita types 1080 words in one hour. What is her gross words a minute rate? (a) 15 (b) 16 (c) 18 (d) none of these
Sauron [17]

Answer:

C 18

Step-by-step explanation:

1080/60 = 18

5 0
3 years ago
Select the statement that describes this expression: 5 x 3 − (2 x 4) + 5.
Mashcka [7]

Answer:

It would be subtract the product of 2 and 4 from the product of 5 and 3, then add 5 because it’s parenthesis then you would multiply/devide then add/subtract whatever comes first

Step-by-step explanation:

5x3 - (2x4) + 5

5x3 - 8 + 5

15 - 8 + 5

7 + 5

12

(Hice los cálculos aquí en caso de que lo necesitaras)

3 0
3 years ago
Suppose the function h(x)=2x-9 is translated up 5 united to become a new function, i(x). what the equation of the new function?
andreyandreev [35.5K]

Option B

i(x) = 2x - 4 is the equation of the new function

<em><u>Solution:</u></em>

Given that the function h(x) = 2x-9 is translated up 5 united to become a new function, i(x)

To find: Equation of new function

The graph of a function can be moved up, down, left, or right by adding to or subtracting from the output or the input.

Adding to the output of a function moves the graph up

Therefore,

Given function is:

h(x) = 2x - 9

Translated up by 5 units

<em><u>Therefore, new function is:</u></em>

i(x) = h(x) + 5

i(x) = 2x - 9 + 5

i(x) = 2x - 4

Thus Option B is correct

6 0
3 years ago
A. 17 <br> B. 12<br> C. 10 <br> D. 14
Sonbull [250]
It might be A i think
3 0
3 years ago
Read 2 more answers
In a recent 10 year period , the change in the number of visitors to an amusement park was about 15,000 visitors. What was the m
Andrej [43]
1,500 was the mean yearly change
7 0
3 years ago
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