5(n-4)=(4n-12)
First: Distribute 5 into n and -4.
5(n-4)=(5n)+(5*-4)= 5n-20.
Second: Subtract 4n from both sides to eliminate the variable from the right side of the equation.
(5n-20)=(4n-12)
n-20=-12
Next: Add 20 to both sides to eliminate the constant from the left side of the equation.
n-20=-12
n=8
The unknown number is 8.
Answer:
(a) = 13,500
(b) = 2,250
Step-by-step explanation:
Matching Step 3 with Step 2, we see that ...
(a) = 3x^2·y
(b) = 3x·y^2
Filling in the values given for x and y, we have ...
(a) = 3·30^2·5 = 13,500
(b) = 3·30·5^2 = 2,250
The area is 210 square millimeters
The answer is :F(6x)= -12x+5
