Answer:
Shown below
Step-by-step explanation:
First allocate the power of three to every number
=
not sure what you mean by positive exponents, the exponents already are positive. Maybe you mean positive exponents and integers?
Jack is planning to attend a public university after he graduates from high school in 2 years. He is devising a plan to save mon
2 answers:
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Answer:
(x, y) = (-3, -6)
Step-by-step explanation:
The second equation can be used to write an expression for y:
... -5x -21 = y . . . . . . . add y-21 to both sides
This expression can be substituted for y in the first equation:
... 6 = -4x +(-5x -21)
... 27 = -9x . . . . . add 21, collect terms
... -3 = x . . . . . . . divide by -9
Using this value of x in the expression for y, we find ...
... -5(-3) -21 = y = -6
The solution is x = -3, y = -6.
Answer:
See explanation
Step-by-step explanation:
1. Given the expression
Note that
When dividing by
we have to subtract powers (we cannot subtract 4 from 7, because then we get another expression), so
and the result is
2. Given equation
Add 4:
Divide by 3:
Rewrite the equation as:
Hence,