Answer:

Step-by-step explanation:
we know that
The volume of the square pyramid is equal to

we have
----> the length of the base of the square pyramid
---> the height of the pyramid
substitute the values in the formula


Answer: Diego, 4a + 9b is equivalent
Step-by-step explanation:
7a + 5b - 3a + 4b
= (7a - 3a) + (5b + 4b) We rerange the variables, and put them together with (), which make it more clear to solve.
= 4a + 9b
Answer:

Step-by-step explanation:
Total red haired students = 15+5 = 20
Boys = 15
<u><em>Fraction:</em></u>
=> 
<u><em>In simplest form:</em></u>
=> 
Answer:
she would need 7 ounces
Step-by-step explanation: