Answer:
The variable d models Rachel's distance from her exit (in meters) t seconds after the cameras began recording the stunt. d = - 38t
Step-by-step explanation:
From given, we have, The expression that represents the Rachel's distance is given by, d = - 38t + 220
where, d represents the distance in meters
t represents the time in seconds
We know that, speed = distance by time. Therefore, we need to differentiate the given equation w.r.t to time to find the speed.
we have, d/dt (d) = d/dt [- 38t + 220]
| d/dt (d) | = | - 38 + 0 |
s = d/dt (d) = 38 m/s
Therefore, the speed of Rachel is 38 m/s.
Answer:
10 13/21
Step-by-step explanation:
Convert mixed numbers into improper fractions
4 9/14 --> 65/14
2 6/7 --> 20/7
8 5/6 --> 53/6
Then calculate
65/14 - 20/7 + 53/6
Before that write it into a common denominator of 42
(195-120+371)/42
That would equal to 446/42
Divide it by 2
That would equal to 223/21
Then 223/21 = 10 13/21
P.S!!!
Don't blindly trust me, check before with others
And also hope it helped
Well this is pretty easy.
If there are 8 people, with 6 doughnuts in every box, then do 6*4 to give you 24.
If you know you multiplication (recommend practicing), then you would know that 8 is a multiple of 24. So the second step to this word problem is 24/8 to give you the final answer of:
3 doughnuts / person
Answer: 6/2x or 3/1x
Step-by-step explanation:
Step 1: Make sure the bottom numbers (the denominators) are the same.
Step 2: Add the top numbers (the numerators), put that answer over the denominator.
Step 3: Simplify the fraction (if needed)
