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shtirl [24]
2 years ago
13

The coefficients of a, b, and c in the following quadratic equation are a = 4, b = 4, and c = -1:

Mathematics
1 answer:
iVinArrow [24]2 years ago
5 0

if c is -1 the equation should be

4x² + 4x -1 = 0

not plus 1

I assume you want the coordinates of the zeros.

if c is indeed -1, they are at (-1.207 , 0) and (0.207 , 0)

if c is +1, as in the equation the only zero point is at (-0.5 , 0)

see screenshot for illustration

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Answer:

$1.25

September

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Step-by-step explanation:

Let's take this a step a time.

First we need to find how much the price of the flowers were in September.

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The October price was a 20% increase of the September price.

To calculate for the price of the flowers on September, we can solve it like this:

Let x = Price during September

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Now we divide both sides by 1.2 to find x.

\dfrac{1.2x}{1.2}=\dfrac{1.5}{1.2}

x = 1.25

The price of the flowers during September was $1.25 each.

Now the 7th grade class earned 40% of the selling price of each flower.

40% = 0.40

To find how much they made on each month, we simply multiply the percentage to the price and the number of flowers sold.

September = 0.40 x 1.25 x 900

September = 0.5 x 900

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Now for October.

October = 0.40 x 1.50 x 700

October = 0.6 x 700

October = $420

The 7th Graders earned more on September.

They earned $30 more on September than October.

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Answer:

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Step-by-step explanation:

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3 years ago
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