.

12 this was easy

10^2 is 100, so just do 6.745*100.

You click the 2nd button, then click cos. It's called inverse cos or arc cos.

Use the divide ;)

If  ..... (A)^2  + (B)^2  = (C)^2  .....where A, B < C  .....then we have right triangle

(CC')^2   + (AC)^2  = (AC')^2  ....  where CC'  = the side length, S       AC is S√2   and  AC' = S√3

Well.....from just the given information.......there are 5 red bricks........are you sure there isn't more to this question???

y=-16x²+28x+5   = 0

This won't factor.....using the on-site solver [and the quadratic formula] , we have

$${\mathtt{\,-\,}}{\mathtt{16}}{\mathtt{\,\times\,}}{{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{28}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}} = {\mathtt{0}} \Rightarrow \left\{ \begin{array}{l}{\mathtt{x}} = {\mathtt{\,-\,}}{\frac{\left({\sqrt{{\mathtt{69}}}}{\mathtt{\,-\,}}{\mathtt{7}}\right)}{{\mathtt{8}}}}\\
{\mathtt{x}} = {\frac{\left({\sqrt{{\mathtt{69}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right)}{{\mathtt{8}}}}\\
\end{array} \right\} \Rightarrow \left\{ \begin{array}{l}{\mathtt{x}} = -{\mathtt{0.163\: \!327\: \!982\: \!864\: \!759\: \!4}}\\
{\mathtt{x}} = {\mathtt{1.913\: \!327\: \!982\: \!864\: \!759\: \!4}}\\
\end{array} \right\}$$

(x^2-6)(x^2-6)

$${\mathtt{90}}{\mathtt{\,\small\textbf+\,}}\left({\mathtt{90}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{6}} = {\mathtt{186}}$$

density = mass / volume , therefore volume = mass / density

75 / 7.14 = 10.5042017 milliliters = 10.5042017 cm^3

The black rose carpet cheaper.

In this case the 4m wide is just enough (3.85 + 0.15 = 4) and you have to cut to the length of 2.35 + 0.15 = 2.50m. 2.5 * 4 = 10 m^2. The cost is 10 * 8 = £80.

In the second case you have to buy carpet with 4m length. After you bought it you have to cut the width to 2.50m. Hence you have to buy 3 * 4 = 12 m^2 carpet which costs 12 * 7 = £84

In conclusion the first choice is cheaper by £4.

= (x²-2x-8) (x-3) = (x³ -5x²-2x+24)

5^-2= 1/(5^2)= 1/25

(-3)^(-2)   = 1/(-3)^2   =  1/9

$${{\mathtt{5}}}^{-{\mathtt{2}}} = {\frac{{\mathtt{1}}}{{\mathtt{25}}}} = {\mathtt{0.04}}$$

$$199! = \Gamma(200)$$

39432893368239525177618160696
60925311475679888435866316473
71266622179724981701671460152
14200599231195208860606945981
94151288213951213185525309633
12476414965556731428635381658
61869849447196122281072583212
01270166459320656137141474266
38762121203786951620160628702
78978433011301595208516203117
58504293980894611113948118519
48687360000000000000000000000
0000000000000000000000000

y times y times y times y times y times y

1850 - 40 percent

1850 - 40% = ?

1850 - 0.4 = 1849.6

inverse is a opposite