Answer:
w = 7 cm
Step-by-step explanation:
Volume = 252 cm³
Height, h = 3cm
Let width = w
Length, l = w + 5
Volume of rectangular prism, V = l * w * h
252 = (w + 5) * w * 3
252 = (w + 5) * 3w
252 = 3w² + 15w
3w² + 15w - 252 = 0
w² + 5w - 84 = 0
w² + 12w - 7w - 84 = 0
w(w + 12) - 7(w + 12) = 0
(w + 12) = 0 or (w - 7) = 0
w = - 12 or w = 7
w cannot be negative
Hence, w = 7 cm
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Ray
(Hope this helps you)
Here is the answer in exact form or decimal form.
Answer
-14
Step-by-step explanation:
Step-by-step explanation:
P(X)=2x²-5x-3 is in the form ax²+bx+c
Using quadratic equation
x={-b±√(b²-4ac)}/2a
x=3,-1/2
