Answer:
90 degree angled lines
Step-by-step explanation:
A. 8 books on each shelf
B. 4 shelves for mystery, 7 shelves for biography
Answer:


Step-by-step explanation:
The given system is:
4x-3y=8
5x-2y=-11
We make x the subject in the top equation to get:

Plug this expression for x in the bottom equation to get

We expand to obtain

Multiply through by 4

Group similar terms



This means


1/15 because you add all the blocks together and it gives you 15 and there is only 1 blue block so it will be a 1/15 chance of getting it
The elephant weighs 9,430 pounds more than the donkey.