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3 years ago

Calculate the surface area. Thank you for the help i will mark brainiest

Mathematics

1 answer:

Viktor [21]3 years ago

3 0

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Answer: 659.7 yd^2

I hope this helped!

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Which pair of coordinate points has a slope of -2?

ladessa [460]

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Solve each equation 3x^2=80

Lapatulllka [165]

Answer:

$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

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Step-by-step explanation:

Hello!

Use the quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

First, let's convert our equation to standard form of a Quadratic: ax² + bx + c = 0

3x² = 80

3x² - 80 = 0

Note, thats the value of b will be 0, as there is no "bx"

Now, solve:

$x = \frac{-(0) \pm \sqrt{(0)^2 - 4(3)(-80)}}{2(3)}$ Plug in values
$x = \frac{\pm\sqrt{960}}{6}$ Simplify the radical (Discriminant)
$x = \frac{\pm8\sqrt{15}}{6}$ Pull out perfect squares
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The solutions are $x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

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3 years ago

Solve the equation. 5x + 10 = 15 A. 3 B. 1 C. 5 D. 25

nikklg [1K]

Answer:

B. 1

Step-by-step explanation:

5x + 10 = 15

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5x = 5

÷ 5 ÷ 5

x = 1

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Answer:

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3 years ago