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2 years ago

How do u do this step by step ? -8 ÷ 3.2

Mathematics

2 answers:

Ad libitum [116K]2 years ago

6 0

Answer:

the answer is -2.5

Step-by-step explanation:

kap26 [50]2 years ago

5 0

-2.5

Step-by-step explanation:

When dividing, if either the numerator or denominator is negative, the answer must be in negative form.

-8 ÷ 3.2 = -2.5.

There is no explanation for the solving, only that you'll use your calculator for that aspect.

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Solve using the quadratic formula 3x^2+11x+5=0

storchak [24]

Answer:

$3x^2 + 11x + 5 = 0 : x = \frac{-11 + \sqrt{61} }{6} , x = \frac{-11 - \sqrt{61} }{6}$

Decimal:

$(x = -0.53162..., x = -3.13504...)$

Step-by-step explanation:

$3x^2+11x+5=0$

Solve with the quadratic formula:

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are:

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

For $a=3,\:b=11,\:c=5:\quad x_{1,\:2}=\frac{-11\pm \sqrt{11^2-4\cdot \:3\cdot \:5}}{2\cdot \:3}$

$x=\frac{-11 + \sqrt{11^2-4\cdot \:3\cdot \:5}}{2\cdot \:3} : \frac{-11 + \sqrt{61} }{6}$

$x=\frac{-11 - \sqrt{11^2-4\cdot \:3\cdot \:5}}{2\cdot \:3} : \frac{-11 - \sqrt{61} }{6}$

The solutions to the quadratic equation are:

$x=\frac{-11+\sqrt{61}}{6},\:x=\frac{-11-\sqrt{61}}{6}$

Hope I helped. If so, may I get brainliest and a thanks?

Thank you, have a good day! =)

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Read 2 more answers

Which is the best buy?<br> Pack of 8 apples for £1.65<br> Pack of 6 apples for £1.25

Sliva [168]

Answer:

Pack of 6 apples for £1.65 is better because the price of 1 apple is less in this answer.

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2 years ago

Data Set 1: (2, 2, 3, 4, 4, 5) Data Set 2: (5, 5, 10, 15, 15, 20) The difference between the interquartile ranges of the data se

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3 years ago

How do u do this step by step ? -8 ÷ 3.2​

How do u do this step by step ? -8 ÷ 3.2