The width of the rectangular pen is equal to 14 feet.
Answer:
x+3
Step-by-step explanation:
21=7x3. Hence answer is 3
Answer:
No graph so we'll use the quadratic formula
x^2+x-4=0
a = 1
b = 1
c = -4
x = -1 +- sqr root (1^2 - 4 * 1 * -4) / 2
x = (-1 +- sqr root (1 +16) ) / 2
x1 = (-1 + sqr root (17)) / 2
x2 = (-1 - sqr root (17)) / 2
Step-by-step explanation:
Answer:
Very similar to solving an equation.
Step-by-step explanation:
You have to use the properties of equality to "undo" each number and isolate the letter to one side.
How ever, if you are multiplying or dividing by a negative number, then the inequality must be reversed.
(This picture from onlinemathlearning.com might help if you're still confused.)