Answer:
100 seats aren't being used.
Step-By-Step-Explanation:
3/5 of 400 is 240
240 + 60 (teacher seats) = 300
300 seats are used
100 seats aren't
:)
Yes, because quadrilaterals have 4 sides and 4 vertices etc. so
a rhombus and rectangle etc. would be a quadrilateral.
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The value of b is one. You just have to use the standard equation y = a + bx^2 + c. Get a, b, then c and from the given equation above you can derive a formula which is x is equal to the - b over 2 multiplied by a. if you get the value of x then substitute it to the equation and you will now get the value of b.
Move 8x to the right
0=x^2-8x+15
Then factor
(x-5)(x-3)
Final answer: C
