Answer: I would say Side-Angle-Side
Step-by-step explanation:
3x+y=17
=> 3x=17-y
Again, x+3y=-1
=> 3y= -1-x
now, 3x+3y= (17-y)+(-1-x)
= 17-y-1-x
= 16-x-y
Answer:
= 10 - 3n
Step-by-step explanation:
the terms 7, 4, 1, - 2 form an arithmetic sequence with n th term
=
+ (n - 1)d
where d is the common difference and
the first term
here d = - 2 - 1 = 1 - 4 = 4 - 7 = - 3 and
= 7, hence
= 7 - 3(n - 1) = 7 - 3n + 3 = 10 - 3n
Answer:
Step-by-step explanation:
Answer: second option
Step-by-step explanation:
The standard form of a quadratic equation is:

Then, to write the quadratic equation given in the problem in standard form, you must substract 1 from both sides of the equation. Then you have:

Given the quadratic equation above, to find the value of
you must substitute:
a=2; b=5 and c=-1 into
Thenrefore, you obtain the following result:
