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3 years ago

Is this right and how did u do it?

Mathematics

2 answers:

NARA [144]3 years ago

6 0

I think it is correct.

viktelen [127]3 years ago

6 0

Its 16a5b2 because you distribute the power of 2 to the power of 3 (adding it basically) getting power of 5 and the power of 2 to the b variable getting b2 and to -4 which is -4x-4 and that = 16

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Need help plz!!!!!!!!???????

rosijanka [135]

Answer:

x=16º

Step-by-step explanation:

The sum of angles in a triangle is 180º.

So,

39 + 125 + x = 180

Solve for x.

164 + x = 180

x = 180-164

x= 16

3 0

3 years ago

Read 2 more answers

HELPPPPPPPPPP PLEASE

777dan777 [17]

Answer:

P = (nRT)/V

Step-by-step explanation:

Step 1: Write formula

PV = nRT

Step 2: Divide both sides by V

P = (nRT)/V

5 0

3 years ago

Convert the following sum into a product. cosx + cos3x + cos5x + cos7x

kvv77 [185]

Answer:

$4\cos x\cos (4x)\cos (2x)$

Step-by-step explanation:

Given: $cosx + cos3x + cos5x + cos7x$

To convert: the given sum into product

Solution:

Use formula: $\cos A+\cos B=2\cos \left ( \frac{A+B}{2} \right )\cos \left ( \frac{A-B}{2} \right )$

$cosx + cos3x + cos5x + cos7x=2\cos \left ( \frac{x+3x}{2} \right )\cos \left ( \frac{x-3x}{2} \right )+2\cos \left ( \frac{5x+7x}{2} \right )\cos \left ( \frac{5x-7x}{2} \right )\\=2\cos (2x)\cos (-x)+2\cos (6x)\cos (-x)\\=2\cos (2x)\cos (x)+2\cos (6x)\cos (x)\\=2\cos x\left [ \cos (2x)+\cos (6x) \right ]$

$cosx + cos3x + cos5x + cos7x=2\cos \left ( \frac{x+3x}{2} \right )\cos \left ( \frac{x-3x}{2} \right )+2\cos \left ( \frac{5x+7x}{2} \right )\cos \left ( \frac{5x-7x}{2} \right )\\=2\cos x\left [ \cos (2x)+\cos (6x) \right ]\\=2\cos x\left [2 \cos \left ( \frac{2x+6x}{2} \right )\cos \left ( \frac{2x-6x}{2} \right ) \right ]\\=2\cos x\left [ 2\cos (4x) \cos (-2x) \right ]\\=4\cos x\cos (4x)\cos (2x)$

4 0

3 years ago

The numerator of the expression 3-x/x-3 can be written as

Ierofanga [76]

Answer:

The answer is -(x-3)

Step-by-step explanation:

It can be written as a negative number so it can be divided/cut :

3 - x = -x + 3

= -(x+3)

3 0

3 years ago

What is the quotient of (3x^4 – 4x^2 + 8x – 1) ÷ (x – 2)

cluponka [151]

Answer:

2 3 0 -4 8

+ 6 12 16

3 6 8 24

A：3x^3+6x^2+8x+24/x-2

7 0

3 years ago

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