75% of n is 45. n is what percent of 90?
2 answers:
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Answer:
The values of x and y to the given equations are x=-1 and
The solution is (-1,)
Step-by-step explanation:
Given equations are
and
to solve the given equations by elimination method :
Adding the given two equations (1) and (2) we get
_______________
4x=-4
Therefore x=-1
Now substitute the value x=-1 in equation(1) we get
(-1)+3y=9
3y=9+1
Therefore the values of x and y to the given equations are x=-1 and
The solution is (-1,)
Solution:
Let the cumulative costs of the plans will be equal after x months.
Then we can write
Hence after 10/29th Month cost will be equal.
and that cost $