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AfilCa [17]
3 years ago
6

Please answer and show the work! Will reward 100 points

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
8 0

\\ \tt\longmapsto \dfrac{(-1)^7-2(3^2-2(4))}{3(\sqrt[3]{-216}+2^3)}

\\ \tt\longmapsto \dfrac{-1-2(1)}{3(6i+8)}

\\ \tt\longmapsto \dfrac{-1-2}{18i+24}

\\ \tt\longmapsto \dfrac{-3}{18i+24}

\\ \tt\longmapsto \dfrac{-1}{6i+8}

ra1l [238]3 years ago
7 0

Answer:

  • - 1/6

Step-by-step explanation:

  • [(-1)⁷ - 2(3² - 2*4)] / [3(∛-216 + 2³)] =
  • [1 - 2(9 - 8)] / [3(-6 + 8)] =
  • (1 - 2*1) / (3*2) =
  • - 1/6
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What are the solutions of x2 +6x-6= 10?
Tasya [4]

Answer:

x = 1   ,or   x = -7

Obviously, the true answer is not in the options given.

Step-by-step explanation:

x² + 6x - 6 = 10

The above equation can not be factorized, hence the use of Almighty Formula.

x = [-b +- √b² - 4ac] / 2a

Where a = 1, b = 6, c = -6

x = [-6 +- √6² - (4*1*-6)] / 2*1

x = [-6 +- √36 - (-24)] / 2

x = [-6 +- √36 + 24] / 2

x = [-6 +- √60] / 2

x = [-6 +- 7.75] / 2

x = [-6 + 7.75] / 2   ,or   x = [-6 - 7.75] / 2

x = 1.75/2   ,or   x = -13.75/2

x = 0.875   ,or   x = -6.875

Approximately

x = 1   ,or   x = -7

8 0
4 years ago
What are the x and y-intercepts of the line described by the equation?
padilas [110]
I think the answer will be x= 4.4 and y= 2 .
8 0
3 years ago
Using a property of operations, what can you say about the sums of (-13.2) + 8.1 and 13.2 + (-8.1)
Wewaii [24]
They are opposites of each other.
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4 0
3 years ago
Radium-226 has a half life of 1622 years. If you start off with a 200
sweet [91]

Answer:

≈23.6 kg left.

Step-by-step explanation:

For determining this, we can simply use an exponential decay equation representing this scenario:

y= a(0.5)^{\frac{t}{h} }

a: the initial amount

t: the amount of time

h: the half life

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Now, solve this equation:

y=220(0.5)^{3.08}

Use a calculator to solve for y:

y= 200(0.118)

y≈23.6 kg left.

3 0
3 years ago
A clock shows a time of 3:20.what type of angle is this
fredd [130]
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\frac{35\pi}{18}-\frac{33\pi}{18}\\\frac{2\pi}{18}\\\frac{\pi}{9}

Acute angle
Right angle =\frac{\pi}{2}
Obtuse angle >\frac{\pi}{2}
Straight angle =\pi

0

Acute angle.
3 0
4 years ago
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