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
pshichka [43]
3 years ago
11

If a boat goes down stream 72 milesind upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still wat

er respectively are
Mathematics
1 answer:
andre [41]3 years ago
3 0

Answer:

Speed of boat in still water = 11 miles per hour.

Step-by-step explanation:

Speed = distance / time

or

Distance= Speed * time

Let s be speed of the boat upstream and r be the speed of the river.

Then

Upstream speed=  s- r = 60/6= 10 miles per hour

Downstream speed= s+r= 72/6= 12 miles per hour

Therefore

s-r= 10--------- equation A

s+r= 12--------- equation B

Adding equation A and Eq. b

s-r= 10--------- equation A

<u>s+r= 12--------- equation B     </u>

<u>2s    = 22                             </u>

<u />

or

s= 22/2= 11 miles per hour.

Speed of boat in still water = 11 miles per hour.

You might be interested in
What is the median of the data set?<br><br><br><br> 9<br> 8.5<br> 8<br> 10
Allushta [10]

Answer:

8.5

Step-by-step explanation:

When you write out the data set, it looks like this:

5, 8, 8, 8, 8, 9, 9, 9, 10, 10

The median means the exact middle of the data set. In this case, it falls between the 8 and the 9, so the middle would be 8.5, so that's the median of the set. I hope this helps :)

6 0
3 years ago
Read 2 more answers
I need help once again so
lawyer [7]
Neither one will ever hit the axis I think? if its x=3.5 then its horizontal but its above the x axis. Same with the second one. its vertical and will never hit the y axis. Not sure how to write that into those boxes but I think there isn't an intercept.
7 0
3 years ago
P^2 - 17p + 72 factor the trinomial. enter smaller number first ? answer (p+?)(p+?)
klio [65]

Answer:

(p - 8)(p - 9)

Step-by-step explanation:

We need  2 numbers whose product is + 72 and whose sum = -17.

They are -8 and -9


3 0
3 years ago
Factor the following number and give the steps<br> 4a+12b-20
Reil [10]
Here, we can either factor:
1. The numbers
2. The variables
3. Both 1 and 2
In this instance, we factor 1 because the variables are different but the three numbers have a Greatest Common Factor.
4a+12b-20
4(a+3b-5)
8 0
3 years ago
Can someone please help me with these questions!
8_murik_8 [283]

1. Buddy is 1 out of 11 students in the classroom who are spreading Christmas Cheer. What percentage of the class is he?

He is 9% of the class that is spreading Christmas cheer.

2. Santa's sleigh has a Clausometer. The highest measure is 100%. If the Clausometer measured at 45. What would this number be represented as a decimal?

If the clausometer measured at 45 then this number as a decimal will be represented as 0.45.

3. The Jack-in-the-box toys had to be tested! The toys worked 0.985 of the time! What percentage of time did they work?

They worked 98.5% of the time

4. The guys handing out advertisement flyers have handed out 4/5 of their total flyers. What percentage of flyers has been handed out?

80% of flyers have been handed out.

5. When the lights go out in the store at night, there is a 15% off sign hanging up by the makeup counter. What is this number as a decimal and a fraction in simplest form?

This number as a decimal and a fraction in simplest form is 3/20 and 0.15.

7 0
3 years ago
Read 2 more answers
Other questions:
  • M&lt;KGH=x+161,m&lt;FGK=x+41,and m&lt;FGH=180° Find x
    8·1 answer
  • You have 22 digs for your current volleyball season. There are 5 games left in the season. You want to break your previous recor
    14·2 answers
  • Eight friends share 2 pizzas equally. How much pizza does each friend get
    15·2 answers
  • Please help with this
    12·1 answer
  • Please help me with this ASAP
    9·1 answer
  • Use the graph to find the possible value for X such that f(x) =10
    14·2 answers
  • Which function is represented by the graph?
    6·2 answers
  • Shape S below is exactly one quarter of a solid sphere, centre O.
    8·1 answer
  • A middle school took all of its 6th grade students on a field trip to see a play at a theater that has 2200 seats. The students
    14·1 answer
  • Solve for x.<br> Can someone please help me? :(
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!