How can you write an equation in two variables to solve a problem?

Answers

Answer 1
Answer:

If a, b, and r are real numbers (and if a and b are not each equal to zero) then ax+with the aid of = r is called a linear equation in two variables. (The “ variables” are the x and the y.) The numbers a and b are called the coefficients of the equation ax+by means of = r. The range r is known as the regular of the equation ax + through = r.

What's an equation example?

An equation is a mathematical statement this is made up of expressions related with the aid of the same signal. for instance, 3x – five = 16 is an equation. Solving this equation, we get the price of the variable x as x = 7.

A one-step equation is an algebraic equation you may resolve in the most effective one step. You've got solved the equation when you get the variable through itself, and not using numbers in the front of it, on one side of the same signal.

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Answer 2
Answer:

With addition you can do something like...

x + x=100       x=50

       or

x+50=100

I'm not sure if I helped much but if you want you can explain more so I can help you with specific numbers or equations. :)


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Can you help me with this
Which these describes a coupon

Which product is negative? A.


–3 • 5 • (–6) • 4


B.


–7 • (–3) • (–9) • 0


C.


–4 • (–6) • (–3) • (–5)


D.


–3 • 4 • (–2) • (–7)

Answers

Negative times a Negative = Positive
Positive times a Positive = Positive
Negative times a Positive = Negative
Positive times a Negative = Negative

Option A:

Negative * Positive * Negative * Positive

Negative * Negative * Positive

Positive * Positive

Positive

Option B:

Anything times 0 is 0, this is incorrect.

Option C:

Negative * Negative * Negative * Negative

Positive * Negative * Negative

Negative * Negative

Positive

Option D:

Negative * Positive * Negative * Negative

Negative * Negative * Negative

Positive * Negative

Negative

Therefore your answer is D.
 the answer is d-( -168)

Help me out !!!!! Please

Answers

4x-t-4 is the final answer.

How is a table helpful when constructing equations

Answers

Its helpful because it gives you the number to put in and to find the unit rate

Final answer:

Tables aid in constructing equations by facilitating the organization and visualization of mathematical data. This makes it easier to apply given parameters to equations and to understand their behavior. For instance, an equilibrium state can be visually represented in a table.

Explanation:

A table is incredibly helpful when constructing equations because it aids in the organization and visualization of mathematical data. Through the usage of tables, one can clearly list and categorize known values that might be used in an equation, thereby making it easier to identify what needs to be solved. For instance, if you're given multiple variables and constants in a word problem, a table can be used to order these parameters systematically so they can be more easily applied into constructing equations.

Similarly, tables contribute to expressing equations visually as they can illustrate changes in variable values, which can further assist in understanding the behavior of the equation. An equilibrium state, for instance, can be clearly italicized in a table to visually represent the point where an equation balances, which would be harder to see in text form.

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a group of friends went to lunch. The bill before sales tax and tip was $37.50. A sales tax of 8% was added. The group then tips 18% of the amount after the sales tax was added. what was the amount in dollars of the sales tax?

Answers

Sales Tax amount: 3 dollars

Altogether they paid $47.50


If you would like an explanation, do not hesitate to ask me!

Solve: 90 is greater than or equal to -9(w+3)

Answers

I just solved this

another way
distributive propery
a(b+c)=ab+ac

90>-9(w+3)
distribute -9
-9(w+3)=-9w-27
now we have

90>-9w-27
add 27 to both sides
90+27>-9w+27-27
117>-9w
divide both sides by -9 and don't forget to flip relation symbol
-13<w
w>-13

any number from -13 and up is ossible

Your new cell phone plan costs $45 per month. You pay an extra $0.05 for every text message sent. If you send 60 texts this month, how much will your bill be?

Answers

   $0.05                     $45
x      60          =     +    $3
-----------              -------------
         $3                    $48 per month