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andrey2020 [161]

3 years ago

12

Is 8.99 a rational number

1 answer:

Viefleur [7K]3 years ago

5 0

No it is undefined when the number reaches to zero.

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Please help!! 15 points!!

vampirchik [111]

$- 1 = - 3 - 4 \cos(4θ + \frac{2\pi}{3} ) \\ - 1 + 4 \cos(4θ + \frac{2\pi}{3} ) = - 3 \\ 4 \cos(4θ + \frac{2\pi}{3} ) = - 3 + 1 \\ 4 \cos(4θ + \frac{2\pi}{3} ) = - 2 \\ \cos(4θ + \frac{2\pi}{3} ) = - \frac{1}{2} \\ \cos(4θ + \frac{2\pi}{3} ) = - \frac{1}{2} \\ \cos(2\pi - (4θ + \frac{2\pi}{3} )) = - \frac{1}{2} \\ 4θ + \frac{2\pi}{3} = arccos( - \frac{1}{2} ) \\ \cos( \frac{4\pi}{3} - 4θ) = - \frac{1}{2}$

3 0

3 years ago

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What are the steps for solving, 7,542÷3

valina [46]

Answer:

2514

Step-by-step explanation:

Do the long division and you'll find the answer.

8 0

3 years ago

1/16^3x=64^2(x+8)<br> Solve for x.

SSSSS [86.1K]

Answer:

x = -4

Step-by-step explanation:

16 = 4*4 = 4²

64 = 4 * 4* 4 = 4³

$(\dfrac{1}{16})^{3x}=64^{2*(x+8)}\\\\\\(16^{-1})^{3x}=64^{2x + 16}\\\\\\16^{-3x}=64^{2x +16}\\\\(4^{2})^{-3x}=(4^{3})^{2x+16}\\\\4^{-6x}=4^{6x +48}$

As bases are same, compare exponents

6x + 48 = -6x

Subtract 48 from both sides

6x = -6x - 48

Add '6x' to both sides

6x + 6x = -48

12x = -48

Divide both sides by 12

x = -48/12

x = -4

3 0

2 years ago

What is the slope intercept form of the equation y+5= 4(x+8)

hram777 [196]

Answer:

$y=4x+27$

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

we have

$y+5=4(x+8)$ ----> equation of the line into point slope form

Convert to slope intercept form

Isolate the variable y

Distributed left side

$y+5=4x+32$

subtract 5 both sides

$y=4x+32-5\\ y=4x+27$

7 0

3 years ago

Nine friends share 12 pounds of pecans equally.

Arlecino [84]

12/9
every friend gets 1 1/3 pounds of pecans

6 0

3 years ago

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