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3-7=-4. so thev square root of -4........is square root -4.it cant be simplified!

signed,

Mathwizard91472

Hang on a moment, I don't think that the question was finished. Surely there was supposed to be an equal sign and another number at the end?????

Still, what you have both said is right of course.

Hi Mathwizzard91472  it is great to see you answering this question.  It was a really good answer too. 

8pi/2 is 2 complete revolutions so 11pi/2 is the same as 3pi/2 as far as the value of sine is concerned.

On the unit circle, 3pi/2 is the point (0,-1)  DRAW it do see what i mean.

sine is given by the y value on the unit circle so sin(3pi/2)= -1

So

sin(11pi/2)= -1

I can try and explain more, maybe with a diagram, if you need me too.  

No brakets are neccesary. 69-4+9+15..

Go on by one........

69-4+9+15.........69-4=65

65+9+15............65+9=74

74+15=89.

 there you go!

Signed,

Mathwizard91472

It is 2,or 1 16/16

okay?

What is 3-7?  

(x - 6)(x + 4) = 0.

window

draw two lines, put the + in between them and the first line of the = on top and the second on the bottom

yeah it is $100 000 000 000 but what is up with all the decimal points in Anonymous' anwer

ha ha ha but think its -85

if you are looking for the value of x then that is six because if you use Pedmas then 6^2 comes first and that is equal to 36 then your problem is equal to 36-2x-24=0 then you use 2*6 get 12 and your problem is equal to 36-12-24=0 so you probably no what to do on from there 36-12=24 and 24-24=0.

x = 93283.582089552238806

2 to the 14th power is 16,384

i dunno, but is seym pretti cemmplex queestiun

4+4 adds up to 8

 $10^11$ it's a syntax error.

The correct variant is   $10^11

$10^11   =   100.000.000.000

It just is but think of it like this

take 2 for example

2=2^1

and if we times 2 by 2  then it becomes  2^2

and again it becomes  2^3

this is ovious so when we multiply it by itself we add one on the power

so when we divide we take on off

2/2 = 2^0

and 2/2 = 1 and this is the same for every number

2^0 / 2 = 2^-1     and so on

hope this helps you understand

3.14 is equal to pi because whenever you divide a circle's circumfrence by it's diameter it is always equal to a number that is close to 3.14

Inner brackets first: 8-2x5.  Here do multiplication first: 8 - 10 = -2

The original expression now becomes 1-2(-3+ -2)

Do the remaining bracket first; -3 + -2 = -5

So we now have 1 - 2(-5) = 1 +10 = 11 

The volume of a cone is (1/3)pi.r²h where r is radius and h is height, so: volume = (1/3)*pi*9²*5 m³

or volume = 135*pi m³

what you do is take the two bottom numbers and find their lowest common multiplier in the case of 3 and 5 its 15 

so to turn 3 into 15 you multiply it by 5 and you have to do the same to the top number so multiply 1 by 5 and you get 5

and 1/3 turns to 5/15

you do the same for 2/5 to get to 15 multipy 5 by 3 and then do the same for 2

and you get 6/15

then its 5/15  +   6/15 and when the bottom numbers are the same just add the top numbers  so 5+6=11

and then you get   11/15

I'm going to assume you mean sin(a) = √3/2 and sin(b) = 1/2.  If so then these refer to a right angled triangle with sides 1, √3 and 2.  Angle a is 60° and b is 30° so a+b = 90°. 

sin(90°) = 1 and cos(90°) = 0

......For extra-virgin olive oil the density is about 0.8000g/cc (@ 20C) –(This comes from olives that don’t even think about “it”)........

LOL !!!!

Shame on that "regular" olive oil !!!!

If the liquid is water the density is 1.000g/cc (@ 4C)

If the liquid is regular olive oil the density is about 0.9150g/cc (@ 20C)

For virgin olive oil the density is about 0.8250g/cc (@ 20C)

For extra-virgin olive oil the density is about 0.8000g/cc (@ 20C) –(This comes from olives that don’t even think about “it”).

If identification of the liquid is known then look it up. This site www.engineeringtoolbox.com/liquids-densities-d_743.html lists several.

The density of most compounds (liquid or solid) are on the net “somewhere.”

~~D~~

where do you put the brackets for 69-4+9+15

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No brackets are necessary!!!........we perform addition and subtraction as we encounter them from left to right..............