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
amm1812
3 years ago
14

Rob runs at a constant speed of 3.8 meters per second for one half hour.​ Then, he walks at a rate of 1.6 meters per second for

one half hour. How far did Rob run and walk in 60 ​minutes?
Mathematics
1 answer:
Tju [1.3M]3 years ago
5 0

Answer:

9,720 meters, or 9.72 km

Step-by-step explanation:

Rob runs at a speed of V1 = 3.8 m/s for t1 = one half hour = 30 x 60 = 1,800 seconds.

=> the distance he runs S1 = V1 x t1 = 3.8 x 1,800 = 6,840 meters

He walks at V2 = 1.6 m/s for t2 = 1,800 seconds.

=> the distance he walks S2 = V2 x t2 = 1.6 x 1,800 = 2,880 meters

The total distance he runs and walks S = S 1 + S 2 = 6,840 + 2,880 = 9,720 meters

You might be interested in
Math help please im begging you help ASAP
Firdavs [7]
B and d
The answer is B
Hope it helped
5 0
3 years ago
Read 2 more answers
A quality control officer is randomly checking the weights of pumpkin seed bags being filled by an automatic
Anni [7]
<h2>Answer:</h2>

Option: D is the correct answer.

   D. x < 397.9 and x > 402.1

<h2>Step-by-step explanation:</h2>

It is given that:

Each bag is advertised as weighing 400 grams.

Also, a  bag must weigh within 2.1 grams in order to be accepted.

Hence, for the bag being accepted the weight must be no less than 2.1 gram from 400 gram and should be no more than 2.1 gram from 400 grams.

i.e. the weight of the bag must be such that:

              400-2.1≤ x ≤ 400+2.1

i.e.

             397.9 ≤ x ≤ 402.1

Hence, if the weight of the bag is less than 397.9 grams or is more than 402.1 grams then the bag will be rejected.

i.e. The range for the bag being rejected is: x<397.9 grams and x>402.1 grams.

7 0
2 years ago
What is 10/8 written as a decimal?
ale4655 [162]

Answer:

1.25

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find a 3 by 3 magic square using numbers 2,5,8,12,15,18,22,25,29
Oksi-84 [34.3K]
I could not get it to work with all of those numbers. The only number that caused an issue was 29. I used 28 instead and it worked. I'm not sure if 29 was a typo, but I couldn't get 29 to work. 

3 0
3 years ago
Solve for x. Enter the solutions from least to greatest. (x−1)^2−9=0
Leno4ka [110]

Step-by-step explanation:

(x−1)²−9=0

(x-1)²= 9

x-1 = ±√9

x-1 = ±3

x = 1-3=-2 or x=1+3=4

the solution = {-2,4}

6 0
3 years ago
Other questions:
  • What is 4001/4 worked out?
    9·2 answers
  • Which expression is equivalent to √128x^5y^6/2x^7y^5? Assume x&gt;0 and y&gt;0.
    6·2 answers
  • I really need help with this question!
    7·1 answer
  • The first term of a geometric sequence is -2 and the common ratio is -1/4. what are the next three terms of the sequence?
    9·1 answer
  • The quadratic function h(t) = -16.1t2 + 150 models a ball's height, in feet, over time, in seconds,
    8·2 answers
  • Admission to a movie theater is $10 for children and $11 for adults. On a certain day, 43 people bought tickets at the theater a
    8·1 answer
  • The following are prices of selected digital cameras. $158, $95 ,$175, $180 ,$95,$129, $228, $300 Find the standard deviation.
    15·1 answer
  • Find the area of this parallelogram.
    6·2 answers
  • WILL MAKE BRAINLIST<br> please help I'm stuck on this one problem.
    5·1 answer
  • A box is filled with five green card six green card and three blue cars. A card is chosen at random from the box. What is the Pr
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!