The scale of his model to the actual car is 1:10 is model is 16 1/2 inches long how long is the actual car

165 inches, or 13 feet and 9 inches

Step-by-step explanation:

Because the ratio of the model to the actual car is 1:10, you know that the actual car is ten times bigger than the model. You can multiply the length of the model by ten to get the length of the actual car with this information.

16.5 x 10 = 165 inches

If you're being asked to convert to feet, do so by dividing by twelve and taking the remainder as your remaining inches.

165 / 12 = 13 r 9, meaning 13 feet and 9 inches

Let me know if you need more of an explanation for anything!

angle efh= angle egh

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.