Well, 100cm divided by 2.5cm equals 40cm.
So, about 40 books.
Answer:
x
=
−
5
±
√
193
24
or in decimal form 0.37
Step-by-step explanation:
Answer:
I think the correct statement is of last one.
1) Average speed in the different intervals:
48.42 m/s
49.36 m/s
50.10 m/s
50.0 m/s
50.0 m/s
2) Instantaneous speed at t = 1 s is 50.28 m/s
Step-by-step explanation:
1)
The position of the arrow at time t is given by the equation
The average speed can be found by dividing the distance covered by the time taken:
(i) For this interval [1,2]:
So
Time interval is
So the average speed is
(II) For this interval [1,1.5]:
So
Time interval is
So the average speed is
(iii) For this interval [1,1.1]:
So
Time interval is
So the average speed is
(iv) For this interval [1,1.01]:
So
Time interval is
So the average speed is
(v) For this interval [1,1.001]:
So
Time interval is
So the average speed is
2)
In this part we want to estimate the instantaneous speed of the arrow. The instantaneous speed can be found by calculating the derivative of the position, therefore:
So the derivative is
And by substituting t = 1 s, we find the instantaneou speed at that time:
Learn more about speed:
brainly.com/question/8893949
#LearnwithBrainly
For 1- 4 all you have to do is multiply the numbers.
An easier way to write the same equation out would be to add multiplication signs. For example:
1. -2*3 is the same as (-2)(3)
When there are two parentheses next to each other without a sign in between, that means multiplication.
6-9 can also all be converted to be a whole number, which is what it want you to do.
11 and 12 is where you need to multiply and then add or subtract after you multiply.
Also, for 13 and 14, both the fractions can be converted to be a whole number, so you should turn them into whole numbers first and your life will be a lot easier.
And 15 is also the same thing as 11 and 12.
Extra Help: When you have two negative numbers, the answer will end being a positive and when there are two positive it will remain a positive, and a negative and positive number will be a negative.