Mrs. smith bought pencils and spiral notebooks for her class. when she bought 60 pencils and 30 spiral notebooks, the cost was $33. when she bought 10 pencils and 20 spiral notebooks, the cost was $19. what is the price of 1 spiral notebook? what is the price of one pencil?

for future students the answer is b

hope i

-lavira: )

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )