Mathematics, 25.07.2019 23:10 livie225
17) a soccer ball is kicked into the air. its height above the ground can be approximated
by using the equation h = -3t2 + 15t, where h is the height above the ground in
meters and t is the time in seconds.
a) what are the zeros of this relation?
b) when does the ball hit the ground?
c) when does the ball reach its maximum height?
d) what is the maximum height of the ball?
18) pyranha kayaks models its profit, p in hundred thousands of dollars, using the
relation p=-2x2 + 28x – 90 where x is the number of kayaks sold in hundreds.
a) find the profit if the company sells 550 kayaks.
b) find the number of kayaks pyranha needs to sell in order to simply break-even.
c) how many kayaks do they need to sell to make their maximum profit?
d) what is the maximum profit?
Answers: 2
Mathematics, 21.06.2019 15:00, maraa013001
Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.
Answers: 3
17) a soccer ball is kicked into the air. its height above the ground can be approximated
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