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
yan [13]
2 years ago
6

After sailing 12 mi, a sailor changed direction and increased the boat's speed by 4 mph. an additional 18 mi was sailed at the i

ncreased speed. the total sailing time was 3 h. find the rate of the boat for the first 12 mi.
Mathematics
1 answer:
inessss [21]2 years ago
8 0
Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h
thus given that
time=distance/speed 
the average time will be:
3=(12+18)/(x+x+4)
3=30/(2x+4)
solving for x we get
3(2x+4)=30
6x+6=30
6x=24
x=4 mi/hr
Answer: 12 mi/hr
You might be interested in
Otse verharan's office maskiner weighed 550 grams on the second visit the kinen had gained 350 grams. On the two visit the
pantera1 [17]

Answer:

63.64%

Step-by-step explanation:

4 0
2 years ago
The box-and-whisker plot below represents some data set. What percentage of the data values are between 60 and 70?
Lady bird [3.3K]

Answer:

22u2uu2i2iu2ui

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Given the points (8,9) and (2,7) find the slope I need help
Debora [2.8K]

Answer:

1/3

Step-by-step explanation:

7-9=-2

2-8=-6

2/6 is 1/3 when simplified

6 0
3 years ago
Solve for a. 1/5(25−5a)=4−a
aalyn [17]
1/5(25-5a)=4-a
⇔5-a=4-a
<span>NO SOLUTION</span>
3 0
3 years ago
“a number greater than or to -3”
mars1129 [50]

Answer:

5

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • How do you solve this??
    10·2 answers
  • What do the following two equations represent -2x+2y=5 5x+y=2
    15·2 answers
  • The boat company makes 4 boats in 20 days. At that rate, how many boats could they make in 30 days?
    14·2 answers
  • What are the names of three collinear points
    13·1 answer
  • The formula for the area of a trapezoid is A = h(b1 + b2), where A = area, h = height, b1 = base 1, and b2 = base 2.
    9·1 answer
  • Find the value of x in the proportion 3/8= x/40
    14·1 answer
  • PLEASE HELP!!<br> Question:use the figure to solve for x
    7·2 answers
  • This is my last question I need help with.
    8·1 answer
  • 1) Hot dogs are sold in packs of 10 and hot dog buns are sold in packs of 8. Tommy wants
    7·1 answer
  • joe received $375 for his graduation He put $205 into his savings account About what Percent of his graduation money did joe put
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!