Mathematics: Victor draws one side of equilateral ∆PQR on the coordinate plane at points P (–9, –2) and Q (–2, –2). What are the two possible coordinates of vertex R? Round to the nearest tenth.

Victor draws one side of equilateral ∆PQR on the

montgomerykarloxc24x

12.07.2021

the vertices of point R could be (-2,5) or (-2,9)

each point is 7 units away from Q since there are 7 units between P and Q

Step-by-step explanation:

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LilCookies1

07.02.2023

After 7 hours, he breaks even.

Step-by-step explanation:

Break Even Point is when Revenue = Cost.

So we equate the revenue function and cost function, and figure out the value of to find his break even hours.

$R(h)=C(h)\\10+30h=5h^2-25\\0=5h^2-30h-25-10\\0=5h^2-30h-35\\0=h^2-6h-7\\0=(h-7)(h+1)\\h=7,-1$

The number of hours, h, cannot be negative, so h = 7 is the right answer.

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