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
algol [13]
3 years ago
15

I'm stuck on b.please help me!!!!​

Mathematics
1 answer:
Sloan [31]3 years ago
5 0

The area under the speed curve tells you how much distance the vehicle covers.

The distance for first 30 s corresponds to the area of a rectangle with height <em>k</em> m/s and length 30 s, or

(<em>k</em> m/s) (30 s) = 30<em>k</em> m

The distance for the last 20 s corresponds to the area of triangle with height <em>k</em> m/s and length 20 s, or

1/2 (<em>k</em> m/s) (20 s) = 10<em>k</em> m

If the total distance traveled was 1.7 km = 1700 m, then

30<em>k</em> + 10<em>k</em> = 1700

40<em>k</em> = 1700

<em>k</em> = 42.5

You might be interested in
1. Which expression is equivalent to (7x -5) - (3x – 2)?
DIA [1.3K]

<em>The</em><em> </em><em>right</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>of</em><em> </em><em>option</em><em> </em><em>D</em><em>.</em>

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em>⤴</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>

4 0
3 years ago
Read 2 more answers
PLEASE HELP THIS QUESTION IS SO ANNOYING!!
nikklg [1K]
ANSWER- 23 , 76


Explanation- just did it :)
6 0
3 years ago
Read 2 more answers
I need hellppp on this oneeeee
PIT_PIT [208]

Answer:

tan H = 9 / 40

Step-by-step explanation:

yeah-ya...... right?

8 0
2 years ago
Read 2 more answers
Which expresses 2700 : 4000 as a decimal?
Naddik [55]
The answer is 0.675. 2700:4000 is a ratio that can be expressed as 2700/4000 = 27/40 = 0.675 
8 0
3 years ago
Benny made a scale drawing of his bedroom what is the area of his actual bedroom
Mama L [17]
40 inches srry if im wrong
7 0
3 years ago
Read 2 more answers
Other questions:
  • Is the power produced directly proportional to the wind speed, give reasons for your answer?
    12·1 answer
  • Original price of a cell phone is 154.99$ the discount is 20% what's the price off
    15·1 answer
  • Cirlce B is given the equation, (x-2)^2 + (y-9)^2 = 25. What are the coordinates of the center and the length of the radius?
    8·1 answer
  • On a sunny day, cindy notices that her shadow is 21 inches long. if it is 75 inches from the top of her head to the end of the s
    5·1 answer
  • You are working as a car salesperson at a motor shop. You earn a 2% commission on every car sale, in addition to your wage of $2
    12·2 answers
  • A student reads 3⁄5 of a book in 30 minutes. How much of the book will be read, if the student reads at the same speed for 40 mi
    14·2 answers
  • Idbuhefygbhjbjwsjnwsnfhbrf
    13·2 answers
  • Please help me please help me please help​
    15·2 answers
  • I need help i only have 5 min left
    13·1 answer
  • Greater than, less than, or equal to...<br> 400 mm 4m
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!