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There aren't any.  Type in abs(n) instead (where n is the number you want the absolute value of).

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Thx guys😋

The first two terms have 5x² in common and the last two terms have 2 in common, so:

10x³ + 15x² + 4x + 6 → 5x²(2x + 3) + 2(2x + 3)

Now 2x + 3 appears twice so we can go further and write 

10x³ + 15x² + 4x + 6 → 5x²(2x + 3) + 2(2x + 3) → (2x + 3)(5x² + 2)

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slope = (y_B - y_A)/(x_B - x_A)

slope = (5 - 0)/(6 - -5)  = 5/11

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Think of a right-angled triangle.  If the cosine of an angle is 2/3, the side adjacent to the angle is proportional to 2 and the hypotenuse is proportional to 3, so the opposite side is proportional to √(3² - 2²) = √5.

Since tan of the angle is opposite/adjacent then tan(cos^-1(2/3)) = (√5)/2

See if you can do something similar with the other one (remembering that in the fourth quadrant sin is negative but cos is positive).

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They are separating at (50 + 60) = 110 miles per hour relative to each other, so they will take (300miles/110miles per hour) = 300/110 hours to be 300 miles apart.

$${\frac{{\mathtt{300}}}{{\mathtt{110}}}} = {\frac{{\mathtt{30}}}{{\mathtt{11}}}} = {\mathtt{2.727\: \!272\: \!727\: \!272\: \!727\: \!3}}$$ 

This is 2.727.... hours or 2hours and 0.727*60 minutes or 2 hours and 44 minutes to the nearest minute.

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@heureka:/  Thanks for correcting me.  That's the right one!!!

30 x 2 = 60

Anonymous has given the formula for the area of a regular polygon.  If you know the area you can use that formula to find the perimeter.

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Thanks guys!

Is the answer 28

x - 23 = 5x

Subtract x from both sides

-23 = 4x

x = -23/4

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It is $${\frac{{\mathtt{1}}}{{\mathtt{2}}}}{\mathtt{\,\times\,}}\left({\mathtt{apothem}}{\mathtt{\,\times\,}}{\mathtt{perimeter}}\right)$$

area = pi*r²  so  r = √(area/pi)

$${\mathtt{r}} = {\sqrt{{\frac{{\mathtt{58}}}{{\mathtt{\pi}}}}}} \Rightarrow {\mathtt{r}} = {\mathtt{4.296\: \!739\: \!856\: \!991\: \!561}}$$  square inches

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The answer is 10.

.25 x 4 = 1.00

1.00 x 184 = $184.00

1 USD = 1.33 Singapore

184 x 1.33 = $244.72

The answer is 4.2978294032706596485 rounded to the nearest tenth is 4.3.

0.248 in fraction form is 31/125

uh no. have you even met Mother Nature?

I haven't but I've met Father David

and no, according to Titanium Rome, it is "fictional"

yea, even though I believe perhaps Nauseated can give the better intro, but I guess mine was alright

okay, I am thinking here ....

if 

7K mod 26=1

I know that k=15 is the smallest integer solution

so

(7*15) mod 26 =1

so

(7*15+26N) mod 26 =1

so

$$[7(15+\frac{26N}{7})]= 1$$         where N is an integer.

So          $$K=15+\frac{26N}{7}$$        is a general solutions

NOW Wolfram|Alpha gave the general solution as   K=15+26N     where K is an integer.

But why did Wolfram|Alpha care about K being an integer?

I can see that N must be an integer, but why does K have to be an integer

Would any other mathematician care to comment?