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4 years ago

6

How do you tell wether a parabola graph has 2 solutions

1 answer:

mr_godi [17]4 years ago

8 0

If the parabola line crosses the x-axis twice, then it has two solutions, or the maximum/minimum of it is a point on the x-axis that means it has two solutions as a double root.

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An oil company fills 1/12 of a tank in 1/3 hour. At this rate, which expression can be used to determine how long will it take f

monitta

Selection B is appropriate.

_____
It takes 12 times as long to fill the whole tank as it does to fill 1/12 of the tank.
.. 12 * (1/3 hour) = (1/3)*12 hour

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3 years ago

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Which of the following is the product of the rational expressions shown below? 7x/x-4•x/x+7

Gre4nikov [31]

<h2>The product of the rational expressions $\dfrac{7x}{x-4}.\dfrac{x}{x+7} = \dfrac{7x^2}{x^2+3x-28}$ .</h2>

Step-by-step explanation:

We have,

$\dfrac{7x}{x-4}.\dfrac{x}{x+7}$

To find, the product of the rational expressions $\dfrac{7x}{x-4}.\dfrac{x}{x+7}$ = ?

∴ $\dfrac{7x}{x-4}.\dfrac{x}{x+7}$

= $\dfrac{7x.x}{(x-4)(x+7)}$

= $\dfrac{7x^2}{(x(x+7)-4(x+7)}$

= $\dfrac{7x^2}{x^2+7x-4x-28}$

= $\dfrac{7x^2}{x^2+3x-28}$

Thus, the product of the rational expressions $\dfrac{7x}{x-4}.\dfrac{x}{x+7} = \dfrac{7x^2}{x^2+3x-28}$ .

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3 years ago

Lincoln has a coin collection. He keeps 3 of the coins in his box, which is 5% of the collection. How many total coins are in hi

Lorico [155]

Answer:

3 times 20 equals 60

Step-by-step explanation:

7 0

3 years ago

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How Do I do this? What’s the Answer?

frez [133]

F(x) = 5x

for f(7) you replace x with 7 so it will be : f(7) = 5(7) = 35

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3 years ago

If one square yard costs 12 dollars how much is 180 square feet

Mumz [18]

12 x 180 is equal to 2160. It would cost $2160

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3 years ago

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