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The Least Common Multiple (LCM) is:   2 x 2 x 3 x 7 = 84

Curcumfrence is Radius times pi times two

Area is pi times radius squared

and Diameter is the radius doubled

okay thank you! i wasn't sure

Well, since side a=x√3 and a=10, you can create the equation: 10=x√3. Solving for x gives you x=10/√3. Since side b=x, and we have just solved for x, b must equal 10/√3.  To solve for c, we use the equation c=2x. Again, x=10/√3, so c=2*10/√3, which then simplifies to 20/√3.

Now, here's the final results:

a=10,

b=10/√3,

c=20/√3.

There we go! We just solved a 30-60-90 triangle problem!

0.33333333333...

To divide a fraction by a number is the same as to multiply the fraction by the multiplicative inverse of that number, i.e:

$$\frac{a}{b}/c = \frac{a}{b}*\frac{1}{c}$$

We get:

$$\frac{5}{3}/9 = \frac{5}{3}*\frac{1}{9}$$

We multiply (*) numerator (top) by numerator and denominator (bottom) by denominator:

$$\frac{5}{3}*\frac{1}{9} = \frac{5 * 1}{3*9}= \frac{5}{27}$$

42.7²

This formula might be helpful:

(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca = a² + b² + c² + 2(ab + bc + ca)

We get:

42.7² = (40 + 2 + .7)² =

40² + 2² + .7² + 2(40 * 2 + 2 * .7 + 40 * .7) = 

1600 + 4 + .49 + 2(80 + 1.4 + 28) = 

1604.49 + 2 * 109.4 = 1823.29 

$$\sqrt{x-5}+5=0$$

Subtract 5 from both sides

$$\sqrt{x-5}=-5$$

Square both sides

$$x-5=(-5)^2$$

or

$$x-5=25$$

Add 5 to both sides

$$x=30$$

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2. because one died, inside the boat, and one jumped off

Thanks!

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Pi is approximately 3.14. 

Pi is a mathematical constant. It's definition is the ration between a circles circumference and it's diameter:

Pi = C/d

Pi is an irrational number, i.e. it cannot be written as a fraction of two integer (An integer is a positive or negative whole number or zero). Since it is an irrational number, it follows that pi has infinitely many decimal digits, and that pi cannot be represented as terminating or repeating decimals. 

... 100 times as many.

100 * 6.022 * 10²³ = 6.022 * 10² * 10²³ = 6.022 * 10²⁵

Since the figures are similar with a scale factor of 4:3   --->   4/3  =  QR/KL   --->   4/3  =  8/KL

--->   Cross multiply:   4 · KL  =  3 · 8   --->   4 · KL  =  24   --->   KL  =  6

Percent means "per hundred". 5% = 5/100 = 1/20.

"7% of something" means "7% * something"

260% of 7 is :

260% * 7 = 7 * 260/100 = 18.2

If the figure has straight sides, divide it into triangles and find the areas of all the triangles.

20j² - 87 = -82      Add 87 to both sides:

20j² = 5      Divide both sides by 20:

j² = 1/4     Take the square root of both sides:

j = 1/2

3(3a - 1) + 2     Solve the paranthesis:

9a - 3 + 2     Do the subtraction:

9a - 1 

[18 – (10 – 6)] + 1  

First get rid of the unneccesary paranthesis:

18 – (10 – 6) + 1      

EITHER: Remember that -(a - b) = b - a

18 + 6 - 10 + 1 = 15

OR: Solve the usual way, be VERY carful so you avoid carless mistakes based on multiple minus signs:

18 – (10 – 6) + 1  = 18 - 4 + 1 = 15

128 mod 527 = 128

This just says, "What remainder do we get when we divide 128 by 527??"

But   ....  128/527  = 0(128) + 128/527    ... so  ......128 is the remainder

For  any ..  a mod b ...   where a and b are positive integers and a < b, the answer will be  "a"

This says

2^x  -(2^1)/(2^x) - 1 = 0

So ....multiply through by 2^x  =

2^(2x) -2 - 2^x = 0  rearrange

2^(2x) - 2^x  - 2 = 0 

This is a little hard to solve, but we can see that x = 1 is a solution  ... [2^(2*1) - 2*(1) - 2] = [4 - 2 - 2 = 0]

Here's the graph from Desmos.....it indicates that this is the only "real" solution.....

what do u need

degrees centigrade.