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
Alona [7]
2 years ago
13

The speed of the current in a creek is 5 mph. A person clan kayak 3 mi upstream in the same time that it takes him to kayak 13 m

i downstream. What is the speed
the person's kayak in still water?
The speed of the person's kayak in still water is
Mathematics
1 answer:
Brut [27]2 years ago
8 0

Answer:

8

Step-by-step explanation:

0) the basic formula is: L=v*t, where L - distance, v - speed/velocity; t - time;

1) if the person's speed in still water is 'v' and the speed of water is 5 (according to the condition), then the upstream speed is 'v-5' and the downstream speed is 'v+5';

2) according to the condition the upstream time and the downstream time are the same, it means t₁=t₂=t, where t₁=upstream time and t₂=downstream time;

3) according to the items above it is possible to make up the equation of the upstream travel: t(v-5)=3; ⇒ t=3/(v-5);

4) according to the items above it is possible to make up the equation of the downstream travel: t(v+5)=13; ⇒ t=13/(v+5);

5) if t=3/(v-5) and t=13/(v+5), then

\frac{3}{v-5} =\frac{13}{v+5}; \ => \ v=8.

You might be interested in
In the figure below ABCD is a rectangle and DA and CB are radii of circles tangent externally, AB = 4 cm. Provide the answer in
ad-work [718]

Answer:

a. Radius of DA - 2 cm.

b. Area of rectangle ABCD -

c. Area of shaded - 8-4π

d. Perimeter of shaded region - also 8-4π

<em><u>Hope this helps!  </u></em>

3 0
3 years ago
PLEASE HELP!! (50 POINTS)
Marrrta [24]

Answer:

Since pair of opposite sides are parallel and adjacent sides meets at right angles, the quadrilateral COAT is a rectangle.

Step-by-step explanation:

The vertices of the given quadrilateral is C(2,0),O(7,0),A(7,2),T(2,2)

It is sufficient to show that pair of opposite sides are parallel and adjacent sides are perpendicular.

The slope of each side can be found using the formula;


m=\frac{y_2-y_1}{x_2-x_1}


Slope of CO,

M_{CO}=\frac{0-0}{7-2}=\frac{0}{5} =0

A line with a zero slope is a horizontal line.


The slope of OA,

M_{OA}=\frac{2-0}{7-7} =\frac{2}{0}

This slope is undefined.

A line with an undefined slope is a vertical line.

This shows that,the side CO and OA of the quadrilateral meets at right angle.


The slope of AT,

M_{AT}=\frac{2-2}{7-0}=\frac{0}{5}=0


This is also a horizontal line.

The slope of TC,


M_{TC}=\frac{2-0}{2-2} =\frac{2}{0}


This also a vertical line.


This implies that, side TC and side AT meets at Tat right angles and TC is parallel to OA.

Also AT is parallel to TO.


This shows that COAT is a rectangle.

8 0
3 years ago
What is the answer to this I really need help it is due tomorrow and it's 9:00 in the night
snow_tiger [21]
Whats your problem I can help you, what type of problem is it?
7 0
3 years ago
The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is
Finger [1]

Using it's concept, it is found that there is a 0.183 = 18.3% probability that the person has completed a bachelor's degree and no more.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

Researching this problem on the internet, it is found that 529 + 1054 = 1583 out of 1911 + 6730 = 8641 people aged 40 or older have completed a bachelor's degree and no more, hence the probability is given by:

p = 1583/8641 = 0.183.

More can be learned about probabilities at brainly.com/question/14398287

#SPJ1

5 0
2 years ago
Oranges sell for $5.00 per bag. If there are 10 oranges in each bag, how much is the price per orange?
yulyashka [42]

Answer:

The answer is A

Step-by-step explanation:

10 divided by 5

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to the problem 5 + 6 (2+3) ^2
    7·1 answer
  • Mary puts 200 fish into a pond. If the fish are guaranteed to increase at an annual rate of 14%, how many fish will be in the po
    10·2 answers
  • Brian rides his bike 0.27 of a mile per minute. If it takes him 27 minutes to ride his bike to his friend's house, how far away
    10·1 answer
  • Several students in ashton's class were randomly selected and asked how many text messages they sent yesterday their answers wer
    5·1 answer
  • PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!!
    7·1 answer
  • I need help pls ? i really need it
    13·1 answer
  • AA I NEED HELP FAST PLEASE <br> 4(p – 6)
    12·1 answer
  • Change at least one number in the table so that it DOES represent a function.
    6·1 answer
  • Rearrange 3x - 6y = -2 to the form y=mx + c
    5·2 answers
  • Solve the equation by completing the square.<br><br> g^2+3g=340
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!