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

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.

-y - 2 < -9 + y
-y < -9 + y + 2
-y - y < -9 + 2
-2y < -7
y < \( \frac{-7}{-2} \)
y < 3\(\frac{1}{2}\)

You need to find the value of b so solve the first equation in terms of x:

-6b + x = -6
x = -6 + 6b

then substitute the result (-6 - -6b) into the second equation:

b + 2(-6 + 6b) = -2
b + (2 x -6) + (2 x 6b) = -2
b - 12 + 12b = -2
b + 12b = -2 + 12
13b = 10
b = \( \frac{10}{13} \)
b = \(\frac{10}{13}\)

To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)

-8b(b - y)
-8(2)(2 - 7)
-8(2)(-5)
(-16)(-5)
80

An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.