All the angles in a rectangle are right angles. abcd is a rectangle. using deductive reasoning, what can we conclude?
only a is a right angle.
a is not a right angle.
abcd are right angles.
not enough information given.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.