Multiply 1st equation by 5
-5x + 10y = -20
now you have
-5x + 10y = -20
5x - 10y = 20
---------------------add
0 + 0 = 0
0 = 0
answer
C. the system has infinitely many solutions
For the 1st hour the cost is $50 whatever is the duration (providing it's 1 hour max.
From one hour and onward the cost becomes an additional $25 per quater of an hour.
If y is the cost and x the number of hours, then the equation becomes :
y =50 + 0.25.x or y =1/4x + 50
Answer:
3x/5+23\5
Step-by-step explanation:
The explanation is in the picture
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Answer: The 31st term is 367
Step-by-step explanation: An arithmetic sequence is derived such that every term is calculated by adding a common difference to the previous term.
The first term has been given as 12. And the value of the nth term shall be defined by the formula
nth term = a(n - 1) + 7. So in order to calculate the unknown term, simply substitute the term for n.
To calculate the 31st term, we apply the formula as follows
nth = a(n - 1) + 7
31st = 12(31 - 1) + 7
31st = 12(30) + 7
31st = 360 + 7
31st = 367
Therefore, the 31st term is 367
Its the same as a square! you do base x height and for explaination just say if u split the parallelagram in half and put it together it makes a square!