Subtract the 2 equations
7x+2y=-19
- -x+2y = 21
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8x +0y=-2
x= -1/4
Answer:
He answered 20 questions correctly.
Step-by-step explanation:
25×.8(80%) = 20.
1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 177147, 531441, 1594323.
If this is the proper sequence pattern, we add up all the numbers to get a sum.
The total sum is 2391457.
Answer:
no, it does not
Step-by-step explanation:
if it was a function, all the x values would've been different, but since 5 is repeated, it is not a function.