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
VashaNatasha [74]
3 years ago
9

A motorboat moves across a lake. It begins at 50km from shore after 9 minutes it is 14 km from shore. What’s it’s distance from

shore in a function
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
7 0

Answer:

y = -4x + 50

Step-by-step explanation:

To write the function we'll use y = mx + b, where y is the distance the boat is away from shore, m is how many km/minute the boat moves at, x is how many minutes it's been, and b is how many km away from shore the boat was at the start. We already know the value of b is 50, so we can put that into the equation:

y = mx + 50

To find how many km the boat moves per minute, let's use the given amount of minutes and km (9, 14) and put them into the equation:

14 = m(9) + 50

Now let's solve for m:

14 = 9m + 50

Subtract 50 from both sides to isolate the 9m:

14 - 50 = 9m + 50 - 50

- 36 = 9m

divide both sides by 9 to isolate the m:

-36/9 = 9m/9

-4 = m

The boat moves at -4 km/minute, which is the same thing as saying that  after 1 minute passes, the boat gets 4km closer to the shore. Now we can input this value into the equation and we have our answer:

y = -4x + 50

agasfer [191]3 years ago
4 0

Answer:

List all of the solutions.

50 k m =

9 m i n u t e s =

14 k m =

Step-by-step explanation:

You might be interested in
(m-2)5 = m3<br> True or False
AleksAgata [21]
The answer is true trust just had this
8 0
2 years ago
Quick picture to find 3 x 2.7
Sav [38]
The answer is 8.1
.........................

8 0
3 years ago
How can you you tell when a pattern shows counting on by tens
astraxan [27]
You can ise repeated reasonings
6 0
3 years ago
,mcwencjkwdncdjcdevc
adelina 88 [10]
Not a sufficient enough question, pls elaborate.
6 0
3 years ago
I need some help please
igor_vitrenko [27]
The answer I got to this was 2.3 but I don't know if that's correct. 
8 0
3 years ago
Other questions:
  • Chelsea has 11 times as many art brushes as Monique. if they have 60 art brushes altogether how many brushes does Chelsea have?
    5·1 answer
  • Find the surface area of a sphere with a radius of 30 m. leave your answer in terms of pi @Directrix
    11·2 answers
  • An n × n matrix B has characteristic polynomial p(λ) = −λ(λ − 3) 3 (λ − 2) 2 (λ + 1). Which of the following statements is false
    7·1 answer
  • Write the sentence as an equation. 323 decreased by d equals 369
    14·1 answer
  • Can someone help me with the 2 highlighted questions?
    10·1 answer
  • Hi All,
    7·1 answer
  • The Blue Plane travels at a constant speed of 120 miles per hour. If it travels for 2 1/2 hours to get to Pennsylvania how far d
    14·2 answers
  • Square root of 3x^2y^3 times 2 square root of 72x^3y^4
    10·1 answer
  • Which angles appear to be congruent?<br> A 1 and 2<br> B 1 and 5<br> C 2 and 4<br> D 4 and 5
    7·2 answers
  • Find the LCM of 15 and 5​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!