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
Anna007 [38]
3 years ago
9

a wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a

hippopotamus, she paddles 15 km across a lake. She paddles across the lake for one hour longer than she paddled up the river. find the speed of the boat as she paddles the lake if the river current is 2 km/h. Pls answer. You'll get 100 points.
Mathematics
2 answers:
natali 33 [55]3 years ago
5 0

Answer:

5km/hr or 6km/hr

Step-by-step explanation:

rusak2 [61]3 years ago
4 0

Answer:

  • 5 km/h or 6 km/h

Step-by-step explanation:

  • Let the speed of the boat be x
  • Speed against the current in the river is x - 2

<u>Time in the river:</u>

  • 6/(x - 2)

<u>Time in the lake:</u>

  • 15/x

<u>The difference:</u>

  • 6/(x - 2) = 15/x - 1

Solve for x to find the speed of the boat

<u>Multiply both sides by x(x - 2) to clear the fraction:</u>

  • 6x = 15(x - 2) - x(x - 2)
  • 6x = 15x - 30 - x² + 2x
  • x² - 11x + 30 = 0
  • (x - 5)(x - 6) =0
  • x -5 = 0, x - 6 = 0
  • x = 5 km/h, x = 6 km/h
You might be interested in
What does the expression (x+3)(9) represent
Dominik [7]

Answer:

evaluate 9(x+3)

expand 9x+27

Step-by-step explanation:

i think i am sorry if i am wrong

3 0
2 years ago
Name the three different types of proofs you saw in this lesson. Give a description of each.
Colt1911 [192]

You already have the answer. It is "One type of proof is a two-column proof. It contains statements and reasons in columns. Another type is a paragraph proof, in which statements and reasons are written in words. A third type is a flowchart proof, which uses a diagram to show the steps of a proof." which looks correct to me.

6 0
2 years ago
The sale price of a used car is $4,160 after a 35% discount. What is the original price of the car?
erik [133]

Answer: The original price was $6,400

Step-by-step explanation: To find the original price, divide the sale price by 1 minus the discount rate:  4160 / (1- 0.35) =  4160 / 0.65 = 6400

mark brainliest?? plz :)

3 0
3 years ago
Suzie Chambers sells cars for a living. She earns $450 per week plus a commission of 5% on
Greeley [361]

Answer:

$930

Step-by-step explanation:

450 + 9600(.05)

450 + 480

$930

6 0
2 years ago
Read 2 more answers
Find the slope of the line please help
Ne4ueva [31]

Answer:

0

Step-by-step explanation:

Plug 2 points into the equation y2-y1/x2-x1. In this case, I picked (0,-1) and (1,-1). This will make the equation -1--1/1-0. Simplify this to get 0/1 which is equal to 0. Therefore, the slope is 0.

If this has helped you please mark as brainliest

5 0
3 years ago
Other questions:
  • What is the slope of the line described by the equation below y-5=-3(x-17)
    15·2 answers
  • 2. CAN SOMEONE PLEASE HELP ME? I'M NOT GOOD IN MATH.<br>Explain your work​
    11·1 answer
  • Can u please help me with this u know who u are
    8·1 answer
  • What is wrong in the drawing? How can you make this work<br> Correct?
    15·1 answer
  • What is the slope of the line containing the ordered pairs (5,-3) and (-2,-3)
    5·1 answer
  • I need help with the following <br> 230 + 10x = 200 +20x<br> I need to solve for X
    5·1 answer
  • Ahh help plss!! thank u
    14·1 answer
  • Find the measure of the indicated angle
    14·1 answer
  • Do a and b have the same value in the equations 2(a-1.1)=5.8 and 5/2b-2 3/4=7 1/4
    13·1 answer
  • solve for the missing angles in this rectangle. int and ent is abbreviations for interior and exterior. start solving for nonago
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!