Answer:
(a) √25 rational
(b) √30 irrational
Step-by-step explanation:
Note : only perfect squares have rational roots
25 = 5² then 25 is a perfect square
therefore √25 = 5 is a rational number
30 cannot be written in the form a² where ‘a’ I start a natural number then 30 is not a perfect square
Therefore √30 is irrational.
Answer:
Nina paid $2.89 per gallon.
Fred paid $2.93 per gallon.
Elanor paid $2.86 per gallon.
Elanor got the best deal.
Step-by-step explanation: Simple division, and if you don't know how to, just learn it or use a calculator.
It is the square root of 155^2-124^2 according to Pythagorean's theorem, which is equal to 97, so it is B.
A think it’s a
Because I’m right
Answer:
x=-3, y=-7. (-3, -7).
Step-by-step explanation:
4x+5=x-4
4x-x=-4-5
3x=-9
x=-9/3
x=-3
y=-3-4=-7
