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
zimovet [89]
1 year ago
12

A motorboat maintained a constant speed of 15 miles per hour related to water going 44 miles upstream then returning the total t

ime for the trip was 7.5 hours use information to find the speed of the current
Mathematics
1 answer:
yanalaym [24]1 year ago
3 0

The speed of the current is 13 mph

<h3>What is speed?</h3>

speed refers to distance travelled per unit time. This is a vector quantity this implies that it has magnitude and direction.

The unit for speed as used here is miles per hour and can be written in short form as mph

<u>Given data</u>

speed of boat = 15 miles per hour = 15 mph

distance = 44 miles upstream

total time for the trip = 7.5 hours

<h3>solving for the speed of the current</h3>

let the water current be x

speed = distance / time

the total travel time upstream and downstream is known

for upstream

15 - x = 44 / time

time = 44 / 15 - x

for downstream

15 + x = 44 / time

time = 44 / 15 + x

total time = time for upstream + time for downstream = 7.5

7.5 = (44 / 15 - x ) + ( 44 / 15 + x )

7.5 = ( 44 ( 15 + x ) + 44 ( 15 - x ) ) / ( 15 + x  )( 15 - x )

7.5 ( 15 + x  )( 15 - x ) = 210 +44x + 210 - 44x

7.5 ( 225 - x ^ 2 ) = 420

( 225 - x ^ 2 ) = 56

169 = x ^ 2

x = sqrt ( 169 )

x = 13 miles per hour

hence speed of current is 13 miles per hour

Read more on speed here: brainly.com/question/4931057

#SPJ1

You might be interested in
Help meFind the product of (3W + 10) (-2W + 5)
Allisa [31]

Answer:

-6w^2-5w+50

Step-by-step explanation:

1)multiply 3W into-2W and 5

2)multiply 10 into -2W and 5

3) combine like terms then sort answer in order

3 0
2 years ago
Read 2 more answers
Heather works part time at a movie theater where she earns $7.00
Nastasia [14]

Answer:

d. 1 grid equals 1 hour

Step-by-step explanation:

When plotting research data,  X-axis(or horizontal axis) usually used for independent variable and Y-axis is used for the dependent variable. In this case, Heather wants to know how much earning on different numbers of hours. The dependent variable is the earning and the independent variable is the hours, so you put hours on the horizontal axis.

You want to make a 10x10 grid of data and the hours ranged between 1-10. If you plot them equally, approximate scale will be: (10h-1h)/(10)= 0.9h/grid

The closest option is 1 hour per grid. It will provide the best visualization since it won't stretch or minimize the data too much.

8 0
3 years ago
18 is the greatest common factor of two numbers. What are several things you know about the prime factorization of each number?
Aneli [31]

Answer:

uh

Step-by-step explanation:

I would use calculater math to help:))

5 0
3 years ago
Read 2 more answers
Please Help Thank You I will reward brainliest
Goryan [66]
The scale of a drawing is the RATIO that all parts of an object are reduced or magnified by
4 0
3 years ago
Read 2 more answers
Triangle ABC has perimeter 22 cm.
Vilka [71]

Answer: yes it is a right angle triangle

Step-by-step explanation:

a^2 + b^2 = c^2

8^2+ 5^2 = ?

64 + 25 = square root of 89

square root of 89 = 9.4

when we round 9.4 it is 9

so

22- (8+5) =

22 - 13 = 9

so our answer is correct

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is simplI find form of the expression-(4)-2
    13·1 answer
  • Ravi can type 6 words in 4 seconds. how many words can she type in 10 seconds.
    11·1 answer
  • In a research sample of high school students, the variable “number of Instagram followers” formed normal distribution with a mea
    5·1 answer
  • PLEASE HELP
    13·2 answers
  • Can someone help me please
    9·1 answer
  • Please help! I need help
    12·1 answer
  • Find it ! Find the perimeter
    8·2 answers
  • Help answer this cringy question
    10·2 answers
  • What information can you learn from reading a box plot graph? Be sure to explain each part of this type of graph and the informa
    7·1 answer
  • What is the square root of 0.49 <br><br> A.49/7<br> B.49/10<br> C.10/7<br> D.7/10
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!