Answer:
a) 
b) 
Step-by-step explanation:
a) We have the following equation:
(1)
Where 
is the time is seconds, 
is the distance in meters and 
is the acceleration due gravity
If we divide numerator and denominator inside the square root by 2:
We will have:
Hence:
b) Using the same equation (1) with thw following data:
We will have the reaction time:
Answer:
Chad is incorrect
Step-by-step explanation:
Since A is in quadrant 2, we know the x must be negative and y is positive. Therefore, if we add a negative sign in front of both x and y, x will become positive, and y will become negative. However, in the 3rd quadrant, both x and y must be negative, which is not the case here. Hence, Chad is wrong.
Answer:
32
Step-by-step explanation:
The unknown side of the shape is 4+6=10
so
3+4+6+9+10=32
Answer:
25%
Step-by-step explanation:
= (4000 - 3000)/4000 × 100%
= 1000/4000 × 100%
= 0.25 × 100%
= 25%
How can you determine the best method of solving a system of equations?
Elimination is best used when both equations are in standard form (Ax + By = C).
Elimination is also the best method to use if all of the variables have a coefficient other than 1.
Hope this helps
