an examination ,60% of the candidates failed the number of candidates who passed was 500 .find the number that failed
1 answer:
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Answer:
(0 , 0) , (18 , 0) , (18 , -18) , (0 , -18) ⇒ the second answer
Step-by-step explanation:
∵ The vertices of the rectangles are:
(0 , 0) , (0 , 6) , (6 , 6) , (6 , 0)
∵ 3 × × R
∴ That is mean The rectangle rotate 270° around the origin
(270° anti-clockwise or 90° clockwise)
and enlargement by scale factor 3
The function
is a parabola concave up, whose solutions are
from here, you can use the quadratic formula
to find that the solutions of the parabola are
So, the parabola is positive if (which wouldn't make sense in our case) or
So, if Tanya caters 25 meals she breaks even, and starting with the 26th meal she will begin to profit.