3 years ago

HELP HELP HELP HELP HELPPP MMEEEEEEEE

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

5 0

The correct answer is distance, in miles, between the cities

Hope this helped :)

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Identify Like terms : 3y2, 2/3x, -3/4y2, 5x, 12x2

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3y^2 and -3/4y^2
5x and 2/3x
12x^2

4 0

3 years ago

Find the vertex of the graph of f(x) = x2 + 4x - 5.

Fofino [41]

You can solve this in two ways.

1. Graphical. Plot the graph for x between -5 and 1 (see attachement).
The vertex of the graph is the peak of the curve, which has the coordinates x=-2, y=-9.

2. Analytical. Calculate the derivative of the function f(x)
$\frac{df}{dx}=2x+4$
Solve the equation:
$2x+4=0$
will give the solution x=-2.
Replace x=-2 in the f(x) function and you'll get the value of y:
$(-2)^2+4 \cdot (-2)-5=4-8-5=-9$

You get the same answer: x=-2, y=-9

So the answer is
<span>B. (-2, -9)</span>