1.9 * 0.4 = 0.76
1.9 + 0.76 = 2.66
2.66 + 1.9 = 4.56
You spend a total of $4.56.
Answer:
A linear equation can be written in many ways, so the way we can use to solve a system of linear equations depends on the form the system is written. There are several methods to do this, the more common are: Method of Equalization, Substitution Method, Elimination Method.
Answer:
all are the properties of square
Step-by-step explanation:
all are correct
Answer:
x= -7/5 y=8/5
Step-by-step explanation:
1. choose a variable to eliminate (i chose 6)
2. multiply the first equation by 2 and the second equation by 3
3. now you have
-6x+6y=18
6x-21y=-42
and the x's can now cancel out when you add the equations together
4. after adding the equations, you get
-15y=-24
5. solve for y (y= 8/5)
6. now plug in 8/5 for the y in one of the original equations to solve for x. (i chose the first one)
7. -3x+3(8/5)=9
-3x+24/5=9
-3x=21/5
x= -7/5
The square root rounded would be 4.9 if you want a whole number try 5. Since twenty four does not have a square root it is hard to tell.