Answer:
47 km
Explanation:
• Lucy's constant speed = 12 km/h.
,
• Time taken = 235 minutes
First, recall the formula below:
Next, note that the speed is given in km/hr, so we convert the given time to hours:
Therefore:
She can travel 47 km in 235 minutes.
Answer- 2: x-1
When there is a " - " in front of the parenthesis change the sign of each term in parentheses
We have been given graph of a sinusoidal function. We are asked to write function formula for our given graph.
We know that and . We can see that our given function is starting at origin, so our graph is sine function.
We know that general form of sine is , where,
A = Amplitude,
Period:
C = Horizontal shift,
D = Vertical shift.
We have been given that function has no horizontal shift, so the value of C is 0.
We can also see that midline of our function is x-axis, so there is no vertical shift as well that is .
We can see that function goes up to 1 from midline and goes down to from midline, so amplitude of function is 1 that is .
We can see that period of our given function is because it completes one cycle from to
We can see that our function is reflected about x-axis, so our function will be .
Therefore, our required function is .