Q: What three equations equals 99 without using 9?

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You can solve the system of equations with three variables using the substitute method, or using matrix operations.

4*4+4/4 = 17

the answer

When talking about a "system of equations", you would normally expect to have two or more equations. It is quite common to have as many equations as you have variables, so in this case you should have two equations.

Without a table or graph, you might forget what an equation represents. [APEX]

(2+3)(5)=(4)(6)+1 Is this what you mean?

a=5: c=4

that is supposes to be 18 to the 6x power

You need two equations to use the addition method.

Solving equations in two unknowns requires two independent equations. Since you have only one equation there is no solution.

No. Solving equations in two unknowns requires two independent equations. Since you have only one equation there is no solution.

Which of the following is a disadvantage to using equations?

It is a simultaneous equation and its solution is x = -1 and y = -5

Its harder to solve the equations with grande numbers

By elimination: x = 3 and y = 0

560 - without using a calculator !

equations have an = sign, inequalities do not

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You use algebra and solve the system(s) of equations using techniques such as elimination or substitution.

yes

Some curves are easier to describe and perform calculations on if using parametric equations

None - except that some people are, unreasonably, uncomfortable with equations.

3*33 ■

Solve this simultaneous equation using the elimination method after rearraging these equations in the form of: 3x-y = 5 -x+y = 3 Add both equations together: 2x = 8 => x = 4 Substitute the value of x into the original equations to find the value of y: So: x = 4 and y = 7

If: x+y = 8 and 2x-y = 5 Then by adding the equations together: 3x = 13 or x = 13/3 By substitution into the original equations: x = 13/3 and y = 11/3