4y=16
y is the variable. If you were to solve the equation you would write the equation as 4(4)=16.
First fold of a piece of paper produces two smaller pieces of paper
Second fold of the resulting pieces of paper produces 4 smaller pieces of paper.
Third fold of the resulting pieces of paper produces 8 smaller pieces of paper.
Thus, the five letter size pieces of paper folded three times produces 8 x 5 = 40 notes.
Thus, one notepad consists of 40 notes.
If someone wrote ten notes per day, then one notepad will last for 4 days.
The trick is to write appropriate equations and then solve the system of equations you've created.
"sum of two numbers is -5:" x + y = -5
"difference is -1:" x-y = -1
Add these two equations together. This will cause y to drop out, and you will be left with an equation in x alone:
2x = - 6, so x = -3. Subst. -3 for x in either equation, above, and find the corresponding y value.
Then write your solution as (-3, y ) (write in your value for y).
Answer:
x^2=12x-32
Step-by-step explanation:
try to factor by splitting the middle term example x^2-(12*x-32)=0
multiply the coefficient of the first term by the the constant 1 X 32=32
find two factors of 32 whose sum equals the coefficient of the middle term which is answer keys -32 +-1 =-33
-16+-2=-18
-8+4=-12.
The answer to the question is 96
