y=15
5y-20=2y+25 move terms
5y-2y = 25+20 calculate like terms
3y=45 divide both sides by 3
The square root of 144= 12. 12 is an integer, integers are always rational since they can be written into a fraction.
Answer:
the answer is d
Step-by-step explanation:
-[-(7)]
-7= -(7)
-7= -7
Answer:
4x
Step-by-step explanation:
4x is going to be the answer because he bakes 4 cobblers and they need c cups of flour so c is going to be the variable x. :)
A neutral atom contains equal amount of proton and
electron.
A negative ion contains extra electrons hence there is
additional outer shell so it is expected that the radius is bigger than that of
a neutral atom.
While a positive ion contains less electron so there is
less outer shell so the radius is smaller than that of a neutral atom.
Arranging the radius in increasing order:
<span>positive ion, neutral atom, negative ion</span>