If 3 =
, then we know 9 =
because 9 is 3 squared.
can be simplified to
So now we know
=
·
Since
and
have the same base, we can express it as a single term by adding the exponents together.
So the answer is C)
Answer:
4/7 or 0.
571428 repeated
Step-by-step explanation:
25+30x=5x²-10
5x²-30x-35=0
x²-6x-7=0 -7=-7*1, -6=-7+1
(x-7)(x+1)=0
x-7=0, x=7 hours.
x+1=0, x=-1 (we cannot take negative for hours)
So, answer is 7
Check
y=25+30*7=235
y=5x²-10= 5*7²-10=245-10 =235
Answer:
I am not sure on the first one but this is what I think:
False
False
True
Step-by-step explanation:
Sorry if it's wrong!!
We have to determine how many different 3 vegetable combinations can be made from a selection of 10 vegetables.
We use the formula
combinations = 10! / [3! * (7!)]
combinations = 10 * 9 * 8 * 7! / 3!
combinations = 720 / 6
combinations = 120
