Answer: P = 3/10
Step-by-step explanation:
Given: The total number of marbles - 5 + 2 + 3 = 10
The number of black balls = 2
Then the number of balls which are not black 10 - 2 = 9
Then the probability of not drawing a black marble is given by
P(Not Black) = Not black = 8/10 = 4/5
-------------
Total
The number of red marbles = 3
Then the probability of drawing a red marble is given
P(Red) = Red = 3/10
------
Total
The surface area of the pyramid is 576.
<em>The square base is 144. It's just a square, so you multiply 12 (length) and 12 ( width) , which equals 144. </em>
<em>Then you find the area of one of the triangles. The equation to find triangles goes like this: 0.5 x B (base: 12) x H (height: 18). That would be 6 x 18 which is 108.</em>
<em>Since you got the area of 1 triangle and there are 4 triangles you have to multiply 108 by 4. That'll give you 432.</em>
<em>SO since you have the area of all the triangles and the square base the last thing you have to do is just add it all up. </em>
<em>The area of the triangles plus the area of the square base = the surface area.</em>
<u>432 cm + 144 cm =576 cm.</u>
Answer:
both
Step-by-step explanation:
angle ABC is an isoceles triangle since BC and AB are equal. If you look at the other two triangles they are also isoceles because they have 2 equal sides as well.
There are 26 letters in the alphabet and 10 numbers (0-9)
So it will be 26x26x10=6,760
Arcsin is the inverse function of sine, it switches the sine function (reverses it)
cosec is the reciprocal of sine