First, remove the parentheses
-7+2x+7=-7
Cancel the equal terms.
2x+7=0
Subtract 7
2x= -7
Divide both sides by 2
Final answer is:
X= -3.5
Answer:

Step-by-step explanation:
Given


Required
Determine the mass of the vehicle
This question will be answered using Newton's second law

Substitute values for Force and Acceleration

Make Mass the subject


---- approximated
<em>Hence, the mass of the vehicle is 1867kg</em>
Answer to 1: 648
Answer to 2: 175
A^2+b^2=c^2
24^2=12^2+x^2
sqrt(576-144)=x
sqrt(432)=x
12sqrt(3)=x
the answer is c