Answer:
good question.... maybe by the way a person acts
Step-by-step explanation:
Slope = 18/6 = 3
Y-intercept = -6
Equation: y = 3x -6
Three main methods come to mind: Substitution method, Elimination method, Matrix row-reduction.The first two methods are taught in early grades in most high schools. Matrix row-reduction is taught in senior years in high school, or more likely, in the early years of a university math or science program.
Answer:
The number of wrapping paper sold was 32 and the number of magazines sold was 40
Step-by-step explanation:
Let
x ----> the number of wrapping paper sold
y ----> the number of magazines sold
we know that
The classes sold 72 items
so
----> equation A
The classes earned $222 for their school
so
----> equation B
Solve the system of equations by graphing
Remember that the solution of the system of equations is the intersection point both graphs
using a graphing tool
The solution is (32,40)
see the attached figure
therefore
The number of wrapping paper sold was 32 and the number of magazines sold was 40
If the number you are rounding is 5, 6, 7, 8, or 9, it goes to ten. If the numbers are 4, 3, 2, or 1, then round down. For example,, 37 is rounded to 40. 34 is rounded to 30.