3 years ago

Help me plzzzz i need help

Mathematics

2 answers:

Simora [160]3 years ago

6 0

With what?????????????????

Pachacha [2.7K]3 years ago

5 0

Answer:

What's the question?

Step-by-step explanation:

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tiny-mole [99]

Answer:

Step-by-step explanation:

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3 years ago

Will give brainliest

Lunna [17]

Answer:

3/13(shade in 3 of the triangles

Step-by-step explanation:

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4 years ago

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If 2cos∅ = √3, find the value of 2cos∅+1/2cos∅-1.

Musya8 [376]

$2\cos\Theta=\sqrt3\to\cos\Theta=\dfrac{\sqrt3}{2}\\\\2\cos\Theta+\dfrac{1}{2}\cos\Theta-1=\sqrt3+\dfrac{1}{2}\cdot\dfrac{\sqrt3}{2}-1=\dfrac{4\sqrt3}{4}+\dfrac{\sqrt3}{4}-\dfrac{4}{4}\\\\=\boxed{\dfrac{5\sqrt3-4}{4}}$

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3 years ago

Choose the expression that represents a quadratic expression. 9x − 2 5x2 + 9x − 1 −2x3 + 8x2 − 7x + 1 x4 − 12x3 + 8x2 − 7x + 1

elena-s [515]

Answer:

$5 {x}^{2} + 9x - 1$

Step-by-step explanation:

A quadratic expresion is of the form

$a {x}^{2} + bx + c$

where

$a \ne0$

The give options are:

$9x-2$

$5{x}^{2}+9x - 1$

$-2x^3+8 {x}^{2} -7x +1$

$x^4-12x^3+8 {x}^{2} -7x +1$

From the given options, the only expression which is quadratic is

$5 {x}^{2} + 9x - 1$

where a =5, b=9 and c=-1

Therefore the correct choice is the second option.

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4 years ago

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Leokris [45]

Answer:

x = 109 degrees

Step-by-step explanation:

180-48-23

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4 years ago

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