Write the quadratic equation whose roots are 3 and 1, and whose leading coefficient is 2. (Use the letter x to represent the variable.)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?