Mathematics: What are the solutions for x when y is equal to 0 in the quadratic function y = x2 +9x?

What are the solutions for x when y is equal to

PatrickHB

04.02.2022

C) x = 0 or x = - 9

Step-by-step explanation:

$y = {x}^{2} + 9x \\ \\ plug \: y = 0 \\ 0 = {x}^{2} + 9x \\ \\ x(x + 9) = 0 \\ \\ x = 0 \: \: or \: \: x + 9 = 0 \\ \\ x = 0 \: \: or \: \: x = - 9$

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meramera50

04.02.2022

See picture for math work and answer.

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lexybellx3

29.03.2022

Ok, so since she walks 5 miles a day every single day, you have to multiply 5 with 365.
5*365 = 1825
So, Principal Watts walks 1825 miles a year.

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