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mahnoorkeen0
16.10.2020 •
Mathematics
The table shows the distance traveled in miles by a cab on a busy road.
t (hours) 0 1.1 2.3 3.4 4.1 5
s(t) (miles) 0 24.2 57.8 79.3 91.4 122.6
Estimate the instantaneous velocity of the cab after t = 1.1 hours.
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Ответ:
the equation is
4x^2 + 4x - 12
Step-by-step explanation:
A quadratic equation is an equation in which the highest power of the unknown is 2.
The general form of a quadratic equation is expressed as
ax^2 + bx + c
Where
a is the leading coefficient
c is a constant
Assuming we want to write the quadratic equation in x, from the information given, the roots which are given are -2 and 1 and the leading coefficient is 4.
Therefore, the linear factors of the quadratic equation will be (x+2) and (x-1)
the equation becomes
(x+2)(x-1)
= x^2 - x +2x - 3
= x^2 + x - 3
Given a leading coefficient of 4, we will multiply the quadratic expression by 4. It becomes
4(x^2 + x - 3)
= 4x^2 + 4x - 12