Mark has 3 balls, 4 toy cars, and 5 g, i. joe action figures in his backpack. what is the probability of selecting a toy car from his backpack?

1/3

Step-by-step explanation:

There are 3 + 4 + 5, or 12, different items in the backpack.  Of these, 4 are toy cars.  Thus, the probability of selecting a toy car is 4/12, or 1/3.

3x + 4y -25 =0 represents the amount of change sianna should recieve

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.