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padilas [110]
2 years ago
12

6. (09.04 LC)

Mathematics
1 answer:
anzhelika [568]2 years ago
8 0

Given:

The quadratic equation is

y=6x^2-9x+22

To find:

The correct application of the quadratic formula.

Solution:

If a quadratic equation is ax^2+bx+c=0, then the quadratic formula is

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

We have,

y=6x^2-9x+22

Putting y=0, we get

6x^2-9x+22=0

Here, a=6,b=-9,c=22. Using the quadratic formula, we get

x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}

The correct application of the quadratic formula is x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}.

Note: The options are not in proper format.

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2 years ago
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Murljashka [212]

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katen-ka-za [31]

The total length of red and blue ribbons is 10.2 m.

Given that, the length of the red ribbon =2.4 m and the length of the blue ribbon =7.8 m.

<h3>How to add two decimals?</h3>

Adding decimals is similar to the usual addition of whole numbers. We know that a decimal number is a number with a whole number part and a fractional part which is separated by a decimal point.

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OleMash [197]
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there are red and white roses in a vase 30% are red .there are 21 white roses.how many are there in total
jarptica [38.1K]

Answer:

Step-by-step explanation:

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