A.
PEMDAS
Parenthesis always comes first, then exponents, multiplication and division, adding and subtracting
Answer: Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
4*x+2*x+1-(2*x-x+21)=0
Step by step solution :
STEP
1
:
Pulling out like terms
1.1 Pull out like factors :
5x - 20 = 5 • (x - 4)
Equation at the end of step
1
:
STEP
2
:
Equations which are never true:
2.1 Solve : 5 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
2.2 Solve : x-4 = 0
Add 4 to both sides of the equation :
x = 4
One solution was found :
x = 4
The answer to this problem is 396cm
Answer and Step-by-step explanation:
The answer is 5 units.
This is because the slope of that line is 2.5, and diagonal 2.5 units twice.
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<span>m(x) = –7x has an inverse which is a function.</span>
