To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.

7x + 1 > \( \frac{x}{-1} \)
-1 x (7x + 1) > x
(-1 x 7x) + (-1 x 1) > x
-7x - 1 > x
-7x - 1 - x > 0
-7x - x > 1
-8x > 1
x > \( \frac{1}{-8} \)
x > -\(\frac{1}{8}\)

An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.

A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s²).

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(3a)(4ab) - (5a²)(9b)
(3 x 4)(a x a x b) - (5 x 9)(a² x b)
(12)(a¹⁺¹ x b) - (45)(a²b)
12a²b - 45a²b
-33a²b

The formula for area is πr². Radius is circle \( \frac{diameter}{2} \):

r = \( \frac{d}{2} \)
r = \( \frac{10}{2} \)
r = 5
a = πr²
a = π(5²)
a = 25π