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3 years ago

7

Juan is organizing textbooks on his bookshelf. He three textbooks. How many different ways can he line the textbooks up on his b

ookshelf?

1 answer:

Serga [27]3 years ago

3 0

Hw can line them up vertically, horizontally, or diagonally

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Rationalize the denominator of the fraction and enter the new denominator below.<br><br>8/2-√12

Studentka2010 [4]

$\frac{8}{2-\sqrt{12}}=\frac{8}{2-\sqrt{4\cdot3}}=\frac{8}{2-2\sqrt3}=\frac{8}{2(1-\sqrt3)}=\frac{4}{1-\sqrt3}\\\\\frac{4}{1-\sqrt3}\cdot\frac{1+\sqrt3}{1+\sqrt3}=\frac{4(1+\sqrt3)}{1^2-(\sqrt3)^2}=\frac{4(1+\sqrt3)}{1-3}=\frac{4(1+\sqrt3)}{-2}=-2(1+\sqrt3)}\\\\=-2-2\sqrt3$

$if\ \frac{8}{2}-\sqrt{12}=4-\sqrt{4\cdot3}=4-2\sqrt3$

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2 years ago

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What is the value of 2x3squared +x2squared when x = 3

irina [24]

I suspect this is what you mean, if let me know
2x(3)^2+x(2)^2
2(3)(9)+3(4)
54+12=66

6 0

3 years ago

What is a political machine

aleksandrvk [35]

A political machine is a political group in which an authoritative boss or small group commands the support of a corps of supporters and businesses (usually campaign workers), who receive rewards for their efforts. ... The term may have a pejorative sense referring to corrupt political machines.

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3 years ago

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Find the value for x

d1i1m1o1n [39]

Answer:

Value of x --> 15°

<u>Step-by-step explanation:</u>

(2x + 60°) and 6x lie on a straight line. So, they form a linear pair. Their sum gives 180°.

---> (2x + 60°) + 6x = 180°

2x + 60° + 6x = 180°

8x + 60° = 180°

8x = 180°- 60°

8x = 120

x = $\frac{120}{8}$

<h3><u>x equals 15°</u></h3>

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2 years ago

For the function f (x) = 8 - x2 evaluate f (-2)<br> 4<br> 12<br> -32<br> 0

professor190 [17]

The answer is 12

Explanation: as you replace -2 it will give 4 so when u add 4 to 8 it equals to 12

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2 years ago