Das is difference of 2 perfect squares
remember
a^2-b^2=(a-b)(a+b)
so
25x^4=(5x^2)^2
16y^2=(4y^2)
(5x^2)^2-(4y)^2=(5x^2-4y)(5x+4y)
cannot be factored further
Or means not both
if people study both then the number of people studying either french or spanish is 7 less than the total number of peple studig french and spanish because thoe 7 are common to both groups
9+14=total=23
23-7=16 people studing either
proabblity=desiredoutcmes/totalpossibe
desired=16
total=30
so 16/30=8/15 is the probablity
Answer:
4915.59
Step-by-step explanation:
It states that she earns 2.9% interest "compounded quarterly."
If you add 2.9% per quarter per year, you'll get the answer 4915.59.
