All Answers 358927 Answers

That is A=1/2 * base * perpendicular height

This is the short version of what CPhill is telling you

$$log_bA = \frac{logA}{logb}$$

You can use whatever base you want - I suggest base 10 or base e so that you can do it on your calculator 

Just go to the on-site calculator and evaluate it....we're not "solving" anything........

Don't forget the $ sign blindxD   

$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{3}}}{{\mathtt{4}}}}\right){\mathtt{\,\times\,}}\left({\mathtt{2}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right) = {\mathtt{14.95}}$$

In a survey of 700 voters, the ratio of men to women taking part was 17:18. How many women took part in the survey?

Think about it this way....we have 35 equal parts of 700 voters..........17/35 are men.........18/35 are women......do you see how to get the answer???    

$$49x=2^x\times2^4\\\\
49x=2^x\times16\\\\
\frac{49}{16}x=2^x\\\\$$

I don't know what to do now 

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OR maybe you meant

$$7^{2x}=2^{x+4}\\\\
49^x=2^x2^4\\\\
49^x=16\times 2^x\\\\
\frac{49^x}{2^x}=16\\\\
\left(\frac{49}{2}\right)^x=16\\\\
log\left(\frac{49}{2}\right)^x=log16\\\\
xlog\left(\frac{49}{2}\right)=log16\\\\
x=log16\div log\left(\frac{49}{2}\right)\\\\
x=0.86679 \mbox{ (correct to 5 decimal places)}$$

I think that is right but I would like someone else to check it.

Alan, you forgot 1 and 42

Ignore the minus sign for a moment

Think of a right angled triangle

cos(theta)=adjacent / hypotenuse

The hypotenuse is the longest side so cos(theta) must be between 0 and 1 (for a right triangle 0 and 1 are not included)

When you extend this idea to include all values of cos then it can be between -1 and 1

I doubt that you want part plates so it woud depend on the exact shape of the 30square metre plate.

For instance if it was 100 cm by 300m you would get none because it is not wide enough!

CPhill has worked out that the MAXIMUM number of full plates is 10 

I would have used calculus rather than physics formulas but i suppose the answer would have been the same.

You question doesn't make sense.

Angles are measured in degrees minutes and seconds!  Not in inches.

I work it out from scratch each time because I can't rememer forumulas very easily

I know that 180degrees = pi radians so that is where i start.

$$180^0=\pi^c\\\\
1^0 = \frac{\pi^c}{180}\\\\
\mbox{therefore}\\\\
x^0=x\times \frac{\pi}{180}\mbox{ radians }$$

1/3 are 25 and under, 2/3 is 25 or older.

Do 28/7 which is 4. Then you times that by 6, which is 4*6=24.

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Yes, yes I do|:

2...no no wait, you do 1times450 squared, then add 23 squared, then you divide that by 101514.5. Yeah it's 2.

Hahaha, made my day!^^^

No ^^^^ just no.

You could just do it on the calclulator

$${\mathtt{5.75}}{\mathtt{\,-\,}}\left({\mathtt{2}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{8}}}}\right) = {\mathtt{3.625}}$$

It depends on the radius of the circle. Please be more specific.

You do 12938439/2587687.8