Answer:
What this is is factoring and these are both perfect squares.
(3x-5)(3x+5) is the answer.
Step-by-step explanation:
First we take the 9x^2-25 and split in in two statements
(3x-5) (3x+5)
then foil to check it
first side: 3x*3x=9x^2
outside: 3x*5=15x
inside: -5*3x=-15x
last: -5*5=-25
then put it together
9x^2+15x-15x-25
the 15x and -15x cancel each other out so you're left with 9x^2-25
Answer:
The diameter is 13cm and the radius is 6.5cm
Step-by-step explanation:
The diameter is the line that goes across the circle and the radius is half the diameter. So...
13cm is the diameter
divide by 2 to get the radius...
6.5 cm
hope this helps :)
Answer:
24 units²
Step-by-step explanation:
Step-by-step explanation:
who is ms white and which subject is this
