Maaarjidn
Answered

Makakuha ng mga sagot mula sa komunidad at mga eksperto sa IDNStudy.com. Magtanong ng anumang bagay at makatanggap ng kumpleto at eksaktong sagot mula sa aming komunidad ng mga propesyonal.

Name 3 objects or cite situations in real life where quadratic equations are illustrated. Formulate quadratic equation out of these objects or situations that describe each.



Sagot :

I have a book that's width is greater than 8 than its length. So What is the area of the book?

Solution:
The width is greater than its length by 8 so
x+8 is the Width

And The Length is
x

if finding the area you will need this:
x(x+8)

and the answer is:
x²+8
ONE AND TWO. A company is going to make frames as part of a new product they are launching.The frame will be cut out of a piece of steel, and to keep the weight down, the final area should be 28 cm^2.The inside of the frame has to be 11 cm by 6 cm.

Area of steel before cutting:
= (11 + 2x) × (6 + 2x) cm^2
= 66 + 22x + 12x + 4x^2
Quadratic Equation = 4x^2 + 34x + 66

Area of steel after cutting out the 11 × 6 middle:
 = 4x^2 + 34x + 66 - 66
 Quadratic Equation = 4x^2 + 34x

THREEA ball is thrown straight up, from 3 m above the ground, with a velocity of 14 m/s.
Add them up and the height h at any time t is:
h = 3 + 14t - 5t^2
Quadratic Equation : -5t^2 + 14t + 3 = 0