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For example I have these two equations: A: 3x - 2y = 50 B: x - 2y = 30 If I take A - B, align the equations' terms so the like terms are in one column: 3x - 2y = 50 x - 2y = 30 _________ , So I got (3x -x)= 2x; (-2y - -y) or (-2y + 2y) = 0 ; (50-30) = 20. 2x = 20 => x = 20/2 = 10
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How can equations and inequalities help a business maximize profit or minimize costs?
Equations and inequalities help maximize profit in a business by simultaneously optimizing the growth and profitability.
Why do businesses use simultaneous equations?
because they want too
Why has the goods and services balance sometimes shown a surplus while the merchandise trade balance shows a deficit?
The reason is that goods and services exports minus exports on merchandise trade plus services while merchandise trade is for only exports minus importsexcluding services. Goods and services is exports minus imports plus services. Merchandise trade is exports minus imports excluding services
A country's trade deficit is expressed as?
exports minus imports.
The cost of overhead minus selling price?
The cost of overhead minus the selling price is a loss. The selling price is typically large enough to include materials and profit.
What does decreased mean in equations?
It means subtract or minus or less
How can we tell if two lines are parallel perpendicular or neither just from their equations?
If the slope of the equations are the same then they are parallel If the slope of the equations are minus reciprocal then they are perpendicular If the slope of the equations are different then they are neither
What are 3 types of equations?
There are actually 4 multiply divide plus minus
What are standard operators for equations that Excel uses?
+ (plus) - (minus) / (divide) * (multiply) ^ (power) = (equals)
Can linear equations have minus signs instead of plus signs?
Yes, and it would be a negative slope.
3y equal minus 4x minus 16 and 8y equal 6x plus 13 what best describes the graphs of the equations shown below?
The lines are perpendicular.
Do the equations x equals 4y plus 1 and x eqauls 4y minus 1 have the same solution?
No.
What is the solution of the system of equations x 5y10 and 3x y1?
Without knowing the plus or minus values of the given terms and without any equality signs it can't be considered as a system of equations.
Does infinity minus infinity equal zero?
you would think it be would but infinity is not a number but a theory so not being a number is can not be used with equations symbols like plus, minus, times etc.
What are the order pairs to equation x minus 2x equals negative 4 and equation 2x minus y equals 1?
x = 4 and y = 7 which will satisfy both equations
Is there a formula for solving quadratic equations?
x is equal to negative b plus or minus the square root of b squared minus 4 times "a" times "c" all over 2 times "a"
Why are the equations w minus x plus x equals w and w plus x minus x equals w called Identities?
They are identities because they are true for ALL values of w and x.
