jess.shen2024

I don't know which type of pyramid volume area you are asking for, but...

Right Rectangular pyramid: Volume= lwh/3

where l=length, w-width, and h= height

Right Square pyramid: Volume= a^2h/3

hope this helps

thanks Melody!

Question: On a Sunday I put two rabbits in a cage. If the number of rabbits in the cage doubles every day, on what day did the cage first have more than 100 rabbits in it?

Sunday: 2 rabbits in a cage

you are basically multiplying by a power of 2 each day because you are "doubling" the number of rabbits

2^6 = 64 and 2^7 = 128

Hence, you get Sunday, because 2^7 is the first day you have more than 100 rabbits, and 7 days is a week!

i also joined recently and i love this website! you can ask questions for help, and even reply and help others. If you go to the forum page, you can see and/or filter unanswered or answered questions.

People are very quick at answering problems, so don't be afraid to ask a math question/concept you don't understand!

the left corner one should be the answer because...

f(x)=x^2-x-2

f(0) = 0^2-0-2 which is -2      plug numbers in

the bottom left is the only one with points (0,-2)

(CPhill's  is much more mathematical lol)

3.

Similarly to question 2, you should simplify all the like terms first

x^2+12x+61=0

in ax^2+bx=c you get a=1 b=12 c=61

use the quadratic formula to find the roots of the equation

solve this and you should get the 2 roots

x= -6+5i , x= -6-5i

no problem!

you are much better at explaining than me!

2. 

move all the numbers on one side so that the right side is left with 1

x^2+6x-15=0

use the quadratic formula to find smallest x can be

you should get something like

x = -3-2sqrt(6)

there is a very simple solution to this:

2,000/25= 80

 so 25 can go into 2,000 80 times