Answer:
Step-by-step explanation:
2x+y=1---------> y=-2x+1
x-2y=3
2) x-2(-2x+1)=3
x+4x-2=3
5x=5
x=1
3) 2x+y=1 when x=1
2(1)+y=1
2+y=1
y=1
the answer is (1,1)
I think you were given (sqrt(x))^5
sqrt(x) = x^(1/2) so
(x^(1/2) )^5 = x^(5/2)
The answer closest to the bottom of the page <<<<===== answer.
9514 1404 393
Answer:
255
Step-by-step explanation:
If the sum of digits is 12, the number is divisible by 3. If the number ends in 0 or 5, it is divisible by 5. So, we're looking for ...
2x0 . . . where x is a digit and 2+x+0 = 12 . . . . . . not possible
2x5 . . . where x is a digit and 2+x+5 = 12 . . . . true for x=5
The number is 255.
Answer:
x=7/5
Step-by-step explanation:
We can write it in exponential form
128= 2^2*2x * 2^x
2^4x+x=5x
2^5x=128
2^5x=2^7
5x=7
x=7/5
if a > 0, there are two possible solutions:
the square root of a square is the base in absolute value bars
if a = 0, that means x = 0. anything multiplied by 0 is 0
if a < 0, there are no solutions because anything squared has to be positive
