Solve the quadratic equation 3x^2 +x-5=0 Give your answer to 2 decimal places

Mathematics

1 answer:

Firdavs [7]3 years ago

5 0

This quadratic should be solved using the quadratic formula.

The quadratic formula is

(-b +/- sqrt(b2 - 4ac)) / (2a) (Side note: The +/- means that you use the plus sign once, then recalculate again using the minus sign. You should get two answers this way.)

The numbers that we plug into the letters can be found from the general form of a quadratic equation

ax2 + bx + c

In your quadratic a = 3, b = 1, and c = -5. I'll let you try and solve the rest on your own. Whatever your answer is, round it off to two decimal places.

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The perimeter of a rectangle is 44 inches. If the width of the rectangle is four more than half the length, find the length of t

Mars2501 [29]

Answer: the length of the rectangle is 12 inches

Step-by-step explanation:

Let the length of the rectangle is x inches

Hence, the width is (x/2)+4 inches

Thus,

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Divide both parts of the equation by 3:

$x=12\ inches$

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Answer:

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Step-by-step explanation:

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