Y = x - 7 ---------- (1)
5x + 2y = 7 ------ (2)
Sub (1) into (2):
5x + 2(x -7) = 7
5x + 2x - 14 = 7
7x - 14 = 7
7x = 7 + 14
7x = 21
x = 3 ----- -sub into (1)
y = x - 7
y = 3 - 7
y = -4
Ans: x = 3, y = -4
As you already written, you have to use Newton's law

where F is the force, m is the mass, and a is the acceleration.
You already know the mass and the force, so you have to solve the equality for the acceleration:

plug the given values:

Answer:
First page, first question the answer b, second question answer is a.
Step-by-step explanation:
When a function is positive, it moves towards the left, when it is negative it moves towards the right.
Answer:
So, equation for 7 more than a number is 10 is 
Step-by-step explanation:
We need to write equation for 7 more than a number is 10.
For writing the equation, we first consider a number. Let the number be x
7 More than a number in mathematical form is translated as : 
So, equation for 7 more than a number is 10 is 
The final answer would be -24