Answer:
Car A's speed is 75 miles per hour
Step-by-step explanation:
As the distance-time graph represents the straight line. Thus, the slope of any line would remain constant along the line.
We also know that in a distance-time graph, the slope of the line would be equal to the speed of the object.
Taking two points from the graph
Determining the slope
Slope = [y₂-y₁] / [x₂-x₁]
= [100 - 25] / [1 - 0]
= 75 / 1
= 75 miles per hour
Therefore, Car A's speed is 75 miles per hour
Answer:
Step-by-step explanation:
we know that
The area of a trapezoid is equal to
where
b1 and b2 are the parallel bases
h is the height of trapezoid (perpendicular distance between the two parallel bases)
In this problem the area is equal to
we have the coordinates
the formula to calculate the distance between two points is equal to
step 1
Find the distance AB
substitute in the formula
step 2
Find the distance BC
substitute in the formula
step 3
Find the distance AD
substitute in the formula
step 4
Find the area
substitute the values
The answer is A because 12.5 plus 0.75 is 13.25. Then muiltiply it with g to find total cost.
-------------------------
12x³+6x²+3x
GCF = 3x
3x(12x³/3x + 6x²/3x + 3x/3x)
3x(4x² + 2x + 1)
-------------------------
X + 3.2 = -3.5
x = -3.5 - 3.2 = -6.7