Answer:
-22
Step-by-step explanation:
1) Substitute x and y into the equation:
-3(4) + 2(-5)
2) Simplify:
-12 + (-10)
= -22
Answer:
Volume of the mold is 
.
Step-by-step explanation:
The volume of the mold is 186 cubic feet concrete. It is to be sold by cubic yard. It means that we need to convert cubic feet to cubic yard.
1 feet = 0.334 yards
So, the volume of the mold is .
Answer:
x = 10
y = 6
Step-by-step explanation:
Multiply second equation with -1 and then add it up with first equation
(-1)*(6x - 7y) = 18
-6x + 7y = -18
6x - 6y - 6x + 7y = 24 - 18 add like terms
y = 6 to find the value of x use this information
6x - 6y = 24 replace y with 6
6x - 6*6 = 24
6x - 36 = 24 add 36 to both sides
6x = 60 divide both sides by 6
x = 10
Answer:
10 or 10/1
Step-by-step explanation:
1/1000 * 10= 0.01 = 1/100
