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
den301095 [7]
2 years ago
10

A man can take a same time to row 13km downstream and 7km upstream.His speed in still water is 5km/hr.The speed of stream is

Mathematics
1 answer:
vekshin12 years ago
8 0

Answer:

0.6 km/hr

Step-by-step explanation:

Speed downstream: 13/5= 2.6 km/hr

Speed upstream: 7/5= 1.4 km/hr

Therefore, Velocity of current is: 1/2 (2.6-1.4) km/hr = 1/2(1.2) km/hr

You might be interested in
Please answer this!
Talja [164]

We have been given that a graph that represents the amount of money in dollars that Tony expects to deposit in his account in terms of the number of years since opening the account.

We are asked to find the rate of change and initial value from our given graph.

We know that initial value is the point, where, graph intersects y-axis that is when x is equal to 0.

We can see that graph starts at 5000 on y-axis, therefore, initial value is $5000.

The rate of change will be equal to slope of line. Let us find slope of line using points (0,5000) and (1,7500).

m=\frac{7500-5000}{1-0}

m=\frac{2500}{1}

m=2500

Therefore, the rate of change is $2500 per year.

The equation y=2500x+5000 represents the amount of money in dollars that Tony expects to deposit in his account.

5 0
4 years ago
PLEASE HELP WILL BRAINLIST (20 POINTS)
Delvig [45]

Answer:

x=2/3+1/3\sqrt{10}

Step-by-step explanation:

Let's solve your equation step-by-step.

3x2−4x−2=0

For this equation: a=3, b=-4, c=-2

3x2+−4x+−2=0

Step 1: Use quadratic formula with a=3, b=-4, c=-2.

3 0
3 years ago
a rectangle has a perimeter of 76 cm. Its length is 5 more that twice its width. The system of equation below can be use to fine
Juliette [100K]

Answer:

l=27cm and w=11cm

Step-by-step explanation:

the perimeter of a rectangle is given by the following equation:

p=2(l+w)=2l+2w

if a rectangle has a perimeter of 76cm and its length  is 5 plus the double of its width we can use a system of equations to find the length l, and the width w.

For the perimeter of the rectangle

2l+2w=76 where l is its length, and  w is its width, 76 is the perimeter of the rectangle in cm.

We know that the lengh of the rectangle is 5 plus the double of its width, writing the equation:

l=5+2w

Substituting the equation above in 2l+2w=76

2(5+2w)+2w=76\\10+4w+2w=76\\6w=76-10\\w=66/6\\w=11

We got that the rectangle width is w=11cm

Substituting w in the equation 2l+2w=76

2l+2(11)=76\\2l+22=76\\l=(76-22)/2=54/2\\l=27

We got that the rectangle length is l=27cm

Verifying the values ​​obtained

2l+2w=76 with l=27 and w=11

2(27)+2(11)=76

54+22=76

Satisfying the equation

5 0
3 years ago
What is the solution to this equation x - 12 = - 4
Alexandra [31]

Answer:

<h2>x = 8</h2>

Step-by-step explanation:

x - 12 = -4            <em>add 12 to both sides</em>

x - 12 + 12 = -4 + 12

x = 8

3 0
4 years ago
Read 2 more answers
9
Rom4ik [11]
B)Huh estuve she she eub navegue.
4 0
3 years ago
Other questions:
  • Evaluate (33) / ( 33 1/3)
    6·1 answer
  • Cases Prudence has a special (cubic) die. The values on its face are the integers from 1 to 6, but they are not arranged ae in a
    12·1 answer
  • What is the area of the shaded region plzz help
    9·2 answers
  • a national monument had 160,747 visitors during the first week of september . a total of 759,656 people visited the monument in
    9·1 answer
  • What is 0.37 (7repeating) as a fraction
    12·1 answer
  • Lynn plotted a point on a number line at -12, and Tammy plotted a point at 25. The distance between
    10·1 answer
  • What is the unit rate of the number of miles driven per number of hours of driving?
    10·1 answer
  • 6n- 15 = 6(5)? – 15<br> =
    5·1 answer
  • 3. Alyssa has to make 70 pancakes, how many cups of flour will she have to use?
    6·1 answer
  • Whats the height of the rectangular prism
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!