Answer:
4a²-9
Step-by-step explanation:
(2a+3)(2a-3) = (2a)²-3² {<em>Difference</em><em> </em><em>of</em><em> </em><em>two</em><em> </em><em>squares</em><em>}</em>
= 4a²-9
Answer:
4 batches
Step-by-step explanation:
4.8/1.2 = 4
Answer: 3.4
The total number of lessons to teach is 6*8.5 = 51 lessons.
15x = 51
X=3.4
A unit fraction means that the fraction has 1 in the numerator. To make 3/8 a unit fraction, you have to make it 1/8 by dividing by 3.
So now you have 3 x 3 x 1/8. You can multiply the 3 and 3.
You are left with 9 x 1/8.
