3 years ago

Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula?

Mathematics

2 answers:

Serhud [2]3 years ago

7 0

X=[-(-1)+or-sqrt ((-1)^2-4x1x-2)]/(2x1)

Nookie1986 [14]3 years ago

4 0

the correct answer is D... on Ed....

just took the test

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$\boxed{d=v \times t}$
d stands for distance, v stands for speed, t stands for time

The car
d = 48 × t
d = 48t

The motorcycle
d = 20 × t
d = 20t

At the end of t hours, the car is 48t miles (east) from the start point and the motorcycle is 20t miles (north) from the start point.

Second, determine the distance between 48t miles at east and 20t miles at north using pythagoras
distance = $\sqrt{(48t)^{2}+(20t)^{2}}$
distance = $\sqrt{2304t^{2}+400t^{2}}$
distance = $\sqrt{2704t^{2}}$
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JulsSmile [24]

Answer:

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