Is this a true statement X^2=1 if and only if x=1 or x=-1

Use the substitution method to solve the system of equations. Choose the correct ordered pair. 2y + 5x = 13 2y - 3x = 5

sage has a hot dog stand. Last week he spent $13 for hot dogs and supplies. He earned $25 what was his profit

How could the work hours/schedule affect how attractive a job is?

Parallel lines j and k are cut by transversal t. Which statement is true about Z2 and Z6? They are alternate interior angles, so m2 + m26 = 180° They are vertical angles, so Z2 26. They are alternate exterior angles, so m2 + m26 = 180º.

How do you eliminate the parameter theta to find a Cartesian equation of the curve: x=sin (1/2 theta), y=cos (1/2 theta), 0 is less than or equal to theta and theta is less than or equal to 4pi

What division sentence means the same as the following subtract sentences? 12-4=8 8-4=4 4-4=0

The ratio of boys to girls in a group is 7:1. If there are 54 more boys than girls, work out how many boys there are.

At the city museum, child admission is 6.50 and adult admission is 9.60. On Friday, 134 tickets were sold for a total sales of 1128.30. How many child tickets were sold that day?

Daniel works at a nearby electronics store. He makes a commission of 15% on everything he sells. If he sells a laptop for 293.00 how many money does Daniel make in commission

The label on the car's antifreeze container claims to protect the car between - 30C and 130C. To convert Celsius temperature to Fahrenheit temperature, the formula is C = 5/9 (F-32).