1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marysya [2.9K]
3 years ago
14

A particle moves on a line away from its initial position so that after t hours it is s = 2t^2 +3t miles from its initial positi

on. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.
Mathematics
1 answer:
Vaselesa [24]3 years ago
4 0

Answer:

Average speed of the particle is 13 miles per hour.

Step-by-step explanation:

From the given question expression for distance traveled by the particle is

s=2t^{2}+3t

Then fro the time interval (1, 4) we have to calculate the average speed.

At t=1, s=2(1)²+3(1) =2+3 =5 miles

And at t = 4 s=2(4)²+3(4) = 2(16)+12 = 32+12 =44 miles

So displacement of the particle in the time span from 1 to hours.

s = (44-5) = 39 miles

And the times taken = (4-1) =3 hours

From the formula speed = displacement/(time taken for displacement)

V = 39/3 = 13 miles/hour



You might be interested in
How do I solve this question I’ve been stuck on this since last night
meriva

Observation one

From the markings on the diagram <1 = 60o The left triangle is at least isosceles. Therefore equal sides produce equal angles opposite them.

Now we have accounted for 2 angles that are equal (each is 60 degrees) and add up to 120 degrees. The third angle (angle 2) is found from this equation.

<1 + 60 + <2 = 180 degrees.  All triangles have 180 degrees.

60 + 60 + <2 = 180

Observation 2

<2 = 60 degrees.

120 + <2 = 180

m<2 = 180 - 120

m<2 = 60 degrees.

Observation 3

m<3 = 120

<2 and <3 are supplementary.

Any 2 angles on the same straight line are supplementary

60 + <3 = 180

<3 = 180 - 60

<3 = 120

Observation 4

m<4 = 40 degrees.

All triangles have 180 degrees. No exceptions.

m<4 + 20 +m<3 = 180

m<4 + 20 + 120 = 180

m<4 + 140 = 180          

m<4 = 180 - 140

m<4 = 40


8 0
3 years ago
please help im trying to get answers but people just putting silly comments on my questions please please give me a hand all in
ankoles [38]

Answer:

8 ================================================================ D

i might be incompetent but at least I'm not impotent

Step-by-step explanation:

3 0
2 years ago
PLEASE SOLVE IT <br>CORRECT ANSWER WILL BE BRAINLIST<br>ANSWER​
Yanka [14]

Answer:

(i) number of student passed in math is 60

(ii) number of student passed in science is 70

only math is 10

and only science is 20

6 0
2 years ago
Julie gives 7 pieces of candy to each of her friends. If Julie gives all of her candy away, which amount of candy could have bee
True [87]
To find the answer to this problem, you just need to figure out which total amount of candy is divisible by 7.

161/7=23
<span>162/7=23.1428571429
</span>145/7=<span>20.7142857143
128/7=</span><span>18.2857142857

Obviously, Julie cannot give a fraction of an amount of candy to someone.  So that rules out that she had 162, 145, or 128 pieces of candy.  

The only amount of candies that Julie could have that is divisible by 7 is 161 candies, which means that 161 is your answer.</span>
5 0
3 years ago
Read 2 more answers
What is the common ratio between successive terms in the sequence? 27,9,3,1, 1/3, ,1/9, 1/27
tigry1 [53]

Answer:

1/3

Step-by-step explanation:

Take the second term and divide by the first

9/27 = 1/3

Take the third term and divide by the second

3/9 = 1/3

Check each subsequent ratio, we can see the common ratio is 1/3

4 0
3 years ago
Other questions:
  • Help please and thanks!
    6·1 answer
  • How do you solve for x in the equation (2x +5)(6x - 1)=120
    8·1 answer
  • Show work please 100 points plus brainliest
    11·2 answers
  • Suzy's Sculpting gym charges a $10 application fee and $12 per month for membership. Tami's Toning does not charge an applicatio
    10·1 answer
  • Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two sides of this t
    9·2 answers
  • What is the difference between a rate and a unit rate? Show an example
    12·1 answer
  • Im give 15 points if you know this phm
    5·1 answer
  • Write a pair of integers whose sum is -1​
    8·2 answers
  • Need answer ASAP
    12·1 answer
  • In factored form please help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!