Isolate/box 14x; use inverse operations to 12, which is to subtract 12 from both sides of the equation.
100
5n+2=20n-43, what should we cancel out is easier?
5n
100
What is "y+5<-6" called
An inequality
100
y>6 is what dot
What is open dot
200
When finding 50% of 189, what do you have to do first?
You have to change 50% into a decimal.
200
Solve for n: 13n+3=81.
n=6
200
Solve 24z-35=55-21z
Z=2
200
Define equivalent inequalities
What are inequalities that have the same solution
200
Solve y/17<=-2
y<=-34
300
"70% of 420" what formula would you set up?
Is/of=x/100
300
Solve 10-n/5=-3, check your solution.
n=65
300
Define when an equation have"no solutions"
When an equation have "no solutions", both sides of the equations' solutions are not equal.
300
Define the open dot and closed dot
An open dot does not include the number while a closed dot does
300
Solve -7z>-63
Z<9
400
What number is 40% of 145? Write the formula and set it up by filling in numbers.
Is/of=x/100; x/145=40/100
400
Solve -8(5-7c)=184, and explain the first step and why.
C=4; The first step is to change the subtraction into addition, because in that way, you can distribute.
400
Define when every number is a solution
When both sides of an equation are equal
400
Define the solution of an inequality
Set of all numbers that produces a true statement when substituted for the variable.
400
What should you do when solving inequalities with multiplication and division with a negative?
You switch the inequality and solve normally.
500
What number is 50% of 320? Explain the formula that says x/100 and fill it in then solve it.
Formula: x/100=percent; x/320=50/100; x=160
500
What should you do when you distributed part of an equation(which is the expression that contains the variable)13x-(x+7)=29? What would that be compared to the original equation?
You have to combine like terms; that would be equivalent variable expressions.
500
Explain why would people call an equation "every number is a solution" and what does that mean.
People means that every number can represent for the variable, the equation will still be equal. That means both sides of an equation were equal.
500
Why does a solution of an inequalities say"a set of all numbers"?
It says "a set of all number" because the solution contains all the numbers that was appropriate when substituted for the variable.(ex: greater than 1 will contain 2,3,4, etc.)
500
In 3x>-17, should you switch the inequality? Why or why not?
You shouldn't because the variable side is not negative, you do not switch signs.