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thanks for the detailed explanation. its perfect!!

First figure out what 'x' equals..... (all of those angles add to 180)

When you find what 'x' is , substitute it into 3x+94 to find angle AOC value in degrees....

    CAN YOU DO IT?   Of course you can !

Again, all of them add to a straight lne    = 180 degrees

3x+94  + x+30  + 2x-4   = 180     solve for x   

    you'll find  x = 10 degrees

Since we have a line segment, this attains $a+2x+3x=80$. Now, plugging in the value of $a$, we get  ^{$45+5x=180, 5x=135$ . Solving for $x$, we get $\boxed{x=27^\circ}.$}

All three of those angles added together produce a straight line and thus are = to 180 degrees

3x + 2x + 4x = 180 degrees

9x = 180 degrees        Divide both sides by 9

x = 20 degrees

Help with this pls

12 / 3 = 4 m - side of each equilateral triangle on segment CD.

You have 2 of them shaded.

So, the shaded area =2 x [1/2 x sin(60) x 4 x 4] =16sqrt(3) /2 = 8sqrt(3)

y = 2 x 1.34^48

y = 2 x     1,261,916

y = 2,523,832 - number of bacteria after 48 hours.

Why are you confused? EP said that the angle at the vertex that they(the equilateral triangle and the square share)  is a right angle, or 90 degrees . Then the middle angle of the equilateral triangle is 60 degrees. Why? Because "equilateral" triangle has 3 "equal" sides and, therefore, 3 "equal" angles!!. Since the sum of the 3 angles of ANY triangle is 180 degrees, then 180/3 =60 degrees for each angle. Since the angle at the vertex is "splitting" a right angle, or 90 degrees which belongs to the square, then that leaves 2 smaller angles on each side of the 60-degree angle, or 90 - 60 =30/2 =15 degrees. That is the top angle of the triangle you are trying to solve.

Since that small triangle is a RIGHT triangle, then: 180 - 90 - 15 =75, which is the angle with a question mark?

Got it now?

It's a right triangle so 

$A = \dfrac{\ell_1 \ell_2}{2} = \dfrac{(2+2)(3+4)}{2}=\dfrac{28}{2}=14$

are you sure the question isn't what's the area of triangle ABD?

"why" is also a word:

why

adverb

You use why in questions when you ask about the reasons for something.

Why hasn't he brought the bill?

Why does CPhill always know the right answers?

Why can't I remember the exact year we married?

Because god said let there be a math forum where peaple can get top notch answeres in less than five minutes, that are always 100% correct.

life.

im confused  what is the answer

$2\times 10-7=20=13$

$4\times 10-6=40-6=34$

Therefore, it is $34-13=21$ and $\frac{21}{13}$ times smaller.

You are very welcome!

:P

Gonna take some time to do the things we never had

The wild dogs cry out in the night
As they grow restless, longing for some solitary company
I know that I must do what's right
As sure as Kilimanjaro rises like Olympus above the Serengeti
I seek to cure what's deep inside, frightened of this thing that I've become

It's gonna take a lot to drag me away from you
There's nothing that a hundred men or more could ever do
I bless the rains down in Africa
Gonna take some time to do the things we never had

Hurry boy, she's waiting there for you

It's gonna take a lot to drag me away from you
There's nothing that a hundred men or more could ever do
I bless the rains down in Africa
I bless the rains down in Africa
(I bless the rain)
I bless the rains down in Africa
(I bless the rain)
I bless the rains down in Africa
I bless the rains down in Africa
(Ah, gonna take the time)
Gonna take some time to do the things we never had

Linear means that the highest power of the variable is 1, like $x^1$ or simply $x$.

However, in this equation, we see an $x^3$ .

Therefore, the function is not linear.

You are very welcome!

:P 

See previous post...

The triangle with the ? in it has a 90 degree angle , a ? angle and a 15 degree angle in it (the upper 90 angle of the square has 60 degrees taken away from it, leaving the remainder split between two small angles on either side of the 60)..

    Does this help?

Heck yah !    ( but I got 44.803)

That is what I get!.

Thanks, CPhill! You can also label the radius of the circle, and find from that!

Please commit breathe to head

I am sure you know how to find the area of a triangle ....right? This figure is TWO triangles....add them together to find the total area.....c'mon.....don't make this more difficult than it really is....