Solve the following system of equations algebraically for all values of a, b, and c.

-3a - b - 3c = - 8

-5a + 3b + 6c = - 4

-6a - 4b + c = - 20

Prove this theorem indirectly. Assume you know that the sum of the angles of a triangle equals 180° and a right angle = 90°. Prove that a triangle cannot have two right angles.

How do I find the answer for this equation 20x+15y = 330, when x+y = 18

On the first Saturday of every month, a local amusement park allows children under the age of 12 to ride for free.

2,8, 14, 19, 20, 21, 26, 33, 36, 41 1. Find the median, mean, and range of the elephant ages. a) Median Median: years b) Mean: years old batang ___ E- c) Range DE ES

3. A scientist wants to test whether dogs are more attracted to the smell of chicken than the smell of beef. Which method, a controlled experiment, a scientific investigation or a scientific model would be most useful to set up? Why?

The rental car holds 22 gallons of gas and gets 20 miles per gallon. The trip to Ellis City is 1760 miles. How many times will the car need to be filled up to make the trip?

Maria said, the 4 in 400,00 has a a value of 400. Is maria correct? Explain

What are the converse, inverse, and contrapositive of the following true conditional? What are the truth values of each? If a statement is false, give a counterexample. If a figure is a rectangle, then it is a parallelogram.

One leg of a right triangle is five feet more than the other leg. If, the Hypotenuse of the right triangle is 15 feet, what is the length of each feet?

Graph the equation y = 0.5x