The first thing you should know is that you have a system of two equations with two unknowns.
Clearing we have:
y-x = 9
2y + 2x = -10
Step1: multiply equation 1 by -2
-2y + 2x = -18
2y + 2x = -10
Step2: add both equations:
4x = -28
x = -28 / 4 = -7
answer
The x-coordinate of the solution for the system of equations is x = -7
Answer:
Option D: - 6;
;
.
Step-by-step explanation:
The sequence is defined by:

To find the first term of the sequence simply substitute n = 1.
First term of the sequence:


Fourth term of the sequence:






is the required answer.
Tenth term of the sequence:






is the required answer.
I believe that you would just multiply 2.35*5 and that would be your answer.
=11.75
Let me see the whole thing, theres no enough info
-16.8 * -10= 168 is the answer