All Answers 358115 Answers

$$\left({\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{100}}\right){\mathtt{\,\small\textbf+\,}}\left({\mathtt{50}}{\mathtt{\,\times\,}}{\mathtt{5}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{3}}$$

say you have 1/2 x 1/4.  you multiply the numerators by each other and the denominaters by each other.  the new numbers are your new fraction. 1/2 x 1/4 is 1/8.  I'm not sure if that helped but that's how I was taught.

Thanks for the help!

actually 9+10 is 19 not 21. I don't know who made that up but in my opinion, it's stupid. It annoys my teachers, some of my other classmates, and myself when people blurt that out just 'cause the teacher says 21 in her sentence.

Please use the calc on the home page and do it yourself !

Uh.....62 kg ??

16% "off" must mean it's just 84% (.84) of the normal price

So

.84 x 45  = $37.80

7.8 

78./10=7.8     I just moved the dec point over one place.

We can figure this, thusly

d = 1335 [ tan61 - tan48] = about 925.74 ft

Draw the triangle

Let the angle that you want be $$x$$

The supplementary angle inside the triangle is  $$\pi-x$$    radians

$$\\sin(\pi-x)=59/65\\\\
\pi-x=asin(59/65)$$

asin is short for arcsine which is the same as inverse sine

Set you calc to radians and solve :)

292/330 finish it on a calc

Draw a picture first.

Let the distance of the furthest boat be F  and the dist of  the closer one be C

You want F - C

--------

tan 42 = 1335/C

solve this for C

tan 29=1335 / F

Solve for F

do the subtraction.

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Try to work it out from what I have written but you are welcome to ask for more help if you need it :)

0.35 what ?

If you mean on the calc - you can't - you have to convert everything to degrees.  

If you mean on the forum you can go to 'insert' 'special character' the degrees sign is near the end of the second line.

29 / 5   =   5 + 4/5

We could have infinite answers for this.

Some possibilities

1 cm and 12 cm

2 cm and 6 cm

3 cm and 4 cm

3(2x-4) = 8         first ....distribute the 3 across the terms in the parentheses

6x - 12  = 8     we want the term with the "x" by itself... so... add 12 to both sides

6x   =  20         divide both sides by 6

x = 20 /6  =  14 / 3

7/15 x 10/1 x 15/17    we can "cancel" the "15s"  leaving

[7 X 10] / 17 =

70 / 17

x - 2y = 8 

-x + 3y = 6

adding these equations, we get

y = 14

substitute this value into one of the equations to find x

x - 2(14) = 8

x - 28 = 8       add 28 to both  sides

x = 36

So the solution is  ( 36, 14)

0.05 is the awnser

yup the awnser is 5

120 seconds

If you mean to dislpay on the forum, you can do it via the LaTex tab.

LaTex is fun to learn.  I think it is anyway.  There is a thread related to it down in the Sticky topics :)

You can get started just by copying or asking how to do things.  Most of the kids started with displaying a fraction.