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Rudik [331]
4 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]4 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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(a) Although neither a linear nor an exponential function would model this data perfectly, justify why an
Alinara [238K]

Answer:

hello the table related to this question is missing attached below is the missing table

answer : An exponential function is much better fit because there is no fixed rate in the table

Step-by-step explanation:

An exponential function is much better fit because there is no fixed rate in the table attached but the values in the table keeps increasing exponentially, hence an Exponential function will be a better fit, But a linear function would be preferred only if there is a fixed rate

7 0
3 years ago
State the domain of 1b, then determine the equation of any vertical asymptotes and/or coordinates of any holes in the graph of t
Katena32 [7]

We have

f(x)=\frac{2x^2+x}{x^2-5x+6}

First we will factorize the function

f(x)=\frac{x(2x+1)}{\mleft(x-2\mright)(x-3)}

The domain is

\: \mleft(-\infty\: ,\: 2\mright)\cup\mleft(2,\: 3\mright)\cup\mleft(3,\: \infty\: \mright)

In this case, we have two vertical asymptotes

x-2=0

x=2

x-3=0

x=3

ANSWER

The domain is

\: \mleft(-\infty\: ,\: 2\mright)\cup\mleft(2,\: 3\mright)\cup\mleft(3,\: \infty\: \mright)

The vertical asymtotes

x-2=0

x=2

x-3=0

x=3

6 0
2 years ago
A glacier flows at a rate of 20 meters per day. What is the flow rate in kilometers per year?
Maurinko [17]
7.3 km/y
at least if i did this correctly but that's always a stretch.

because it takes 50 days to complete a km
so 365/50 = 7.3
4 0
4 years ago
How many solution does 6-3x=4-x-3-2x
-Dominant- [34]

Answer:

Step-by-step Simplifying

6 + -3x = 4 + -1x + -3 + -2x

Reorder the terms:

6 + -3x = 4 + -3 + -1x + -2x

Combine like terms: 4 + -3 = 1

6 + -3x = 1 + -1x + -2x

Combine like terms: -1x + -2x = -3x

6 + -3x = 1 + -3x

Add '3x' to each side of the equation.

6 + -3x + 3x = 1 + -3x + 3x

Combine like terms: -3x + 3x = 0

6 + 0 = 1 + -3x + 3x

6 = 1 + -3x + 3x

Combine like terms: -3x + 3x = 0

6 = 1 + 0

6 = 1

Solving

6 = 1

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

3 0
3 years ago
Missing fraction<br> blank + 1/16 = 3/2
skad [1K]

Answer: 1/2

Step-by-step explanation:

Let the missing fraction be x

x + 1/16 = 3/2

Make x the subject by subtracting both sides by 1/16

x = 3/2 - 1/16

x= 24 - 16/16

= 8/16; divide through by a common value of 8

x = 1/2

I hope this helps.

4 0
3 years ago
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