Prove - 1 - cos^2 x = sin^2 x

Which equations are equivalent to y = 2/3x - 4 when written in slope-intercept form? Check all that apply

Find the area of the circle given the diameter. Round to the nearest hundredth when necessary. d = 14 cm a 134.86 cm b 153.86 cm C 99.47 cm d 112.47 cm

the unequal sides of an isoceles triangle is 3cm more than one of its equal sides. if the perimeter is 18 cm. find the length of the sides

A family spends 1/10 of its annual income for housing, 1/4 for food and clothing, 1/5 for general expenses, and 2/15 for entertainment. What fractional part of their income is spent on these items altogether?

How many different ways can you make $2.00 using half dollars, quarters and dollars?

Use elimination to solve the system of equations. 3x - 5y = - 9 x + 2y = 8

When constructing an angle bisector, why do the arcs intersect?

Clare estimates that her brother is 4 feet tall. When they get measured at the doctor's office, her brother's actual height is 4 feet, 2 inches. Should Clare's or the doctor's measurement be considered the actual height? Explain your reasoning.

What is 2 plus 2 in an equation

The sum of two numbers is 28. The first number is 7 more than twice the second number. Let a represent the first number. Let b represent the second number. What is the second number? Use the table to guess and check.