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
Genrish500 [490]
3 years ago
7

A motorboat takes 40 minutes to travel 20 miles downstream. The return trip takes 60 minutes. What is the speed of the current?

Mathematics
1 answer:
FromTheMoon [43]3 years ago
5 0
Let b be the speed of the boat, and c be the speed of the current. Then:
20/b+c=2/3 hr
20/b-c=1 hr
2/3b+2/3c=20
b-c=20
Then:
b+c=30
b-c=20
2b=50
b=25 mph
c=5 mph
☺☺☺☺
You might be interested in
Reciprocal of 12 by 15 is​
romanna [79]

the reciprocal is 15 by 12

5 0
3 years ago
HELP PLEASE ASAP!!!!
Akimi4 [234]

Answer:

85°

Step-by-step explanation:

add 125+150=275

a circle is 360

so 275+85=360

4 0
2 years ago
David drove the first six hours of his journey at 65 km/ hour and the last 3 hours of his journey at 80 km/hour how far is the w
zzz [600]
630 kilometers for the whole journey
4 0
4 years ago
Read 2 more answers
When the shape of a bst approaches that of a perfectly balanced binary tree, what is the worst case performance characteristic o
irga5000 [103]

The shape of a bst approaches that of a perfectly balanced binary tree, (log2n) is the time complexity for a balanced binary search tree in case of insertions and search.

In computing, binary bushes are mainly used for looking and sorting as they offer a way to save statistics hierarchically. a few common operations that may be conducted on binary trees encompass insertion, deletion, and traversal.

A binary tree has a special situation that each node could have a most of two youngsters. A binary tree has the benefits of each an ordered array and a linked listing as search is as brief as in a taken care of array and insertion or deletion operation are as fast as in related listing.

In pc science, a binary tree is a tree information shape in which every node has at maximum two youngsters, that are known as the left baby and the proper toddler.

Learn  more about binary trees here brainly.com/question/16644287

#SPJ4

7 0
2 years ago
Ted bought 1 box of whistles(12 in the box), 1 box of streamers(48 in the box), and 1box of stickers(36 in the box). How many pa
sammy [17]
12+48+36=96, it only says that there are one in each box so that means you only have to add them once.
6 0
4 years ago
Read 2 more answers
Other questions:
  • What is the answer. 3 1/3+ 5 2/3+ 3 5/6
    13·2 answers
  • != Question Help
    9·1 answer
  • a school has 294 chairs.there are 14 chairs at each table. two chairs will be removed from each table.how many chairs will be le
    11·2 answers
  • Identify the shape from the points below. (-3,2), (-3,9), (10,9) and (10,2)
    13·1 answer
  • What is -5(2x + y - 4)
    12·1 answer
  • HELP ME PLEASE!!!!!!!!
    13·2 answers
  • E
    11·1 answer
  • Please help me! I’ve already asked this but nobody answered me so-
    13·1 answer
  • PLEASE HELP What challenge did Raleigh face after becoming the state capital at the turn of the 19th century?
    7·1 answer
  • What is the area of the regular polygon?<br> 6 m
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!