In this unit, you solved two-step equations. A two-step equation is an equation of the form px + q = r. It takes two steps to so
2 answers:
Answer:
Step-by-step explanation:
Solve:
The additional step was to add 10+9.
Solving a three-step equation is not more difficult than solving a two-step equation, it only require one more step.
There is a limit to the number of steps it takes to solve an equation, because at some point the equation is simplified and you get to the answer.
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Answer:
The length of one side of the cube is 1.4 m
Step-by-step explanation:
we know that
In a cube the length, the width and the height is the same
so
The volume of a cube is
where
b is the length side of the cube
In this problem we have
substitute and solve for b
therefore
The length of one side of the cube is 1.4 m
Answer:
x=y=z=90.
Step-by-step explanation:
let the 3 numbers be x,y,z.
let s be sum
s=x+y+z
we need to maximize xy+yz+zx
or , xy + y(270-(x+y))+x(270-(x+y)) = P(x)
Use Lagrange's Multipliers
⇒ΔP= λΔS
⇒
⇒y=x
⇒\frac{x+z}{x+y} =1
⇒z=y
⇒x=y=z
⇒3x = 270
⇒x= 90
hence, x=y=z=90.