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
Rudik [331]
3 years ago
14

Samantha swam upstream for some distance in one hour. She then swam downstream the same river for the same distance in only 12 m

inutes. If the river flows at 4 mph, how fast can Samantha swim in still water? 3 mph 6 mph 7 mph 8 mph
Mathematics
1 answer:
Sever21 [200]3 years ago
4 0

Answer:

The option B is correct, i.e. 6 mph.

Step-by-step explanation:

Suppose Samantha swim in still water at speed of X mph.

If the river flows at 4 mph,

Then Upstream speed = (X-4) mph.

And Downstream speed = (X+4) mph.

Samantha swam upstream for some distance in one hour. She then swam downstream the same river for the same distance in only 12 minutes.

It means <u>Distance upstream = Distance downstream</u>.

Speed upstream x Time upstream = Speed downstream x Time downstream.

(x-4) * 1 = (x+4) * 12/60

x - 4 = 0.2x + 0.8

x - 0.2x = 0.8 + 4

0.8x = 4.8

x = 4.8/0.8 = 6 mph.

Hence, the option B is correct, i.e. 6 mph.

You might be interested in
Which list orders the number from least to greatest​
sineoko [7]

Answer:

Option C

-5, -2, 1, 3

Step-by-step explanation:

to get the list that orders the numbers from the least to the greatest, we need to, first of all, know the smallest and the largest numbers.

The largest number is easy to guess - it is undoubtedly 3.

However, the smallest number may be a bit tricky because we are dealing with negative numbers. When dealing with negative numbers, the numbers with greater magnitudes are actually smaller. This means that -5 is less than -3, which is less than -2, and so on.

Coming back to our question, we can now order the numbers as -5, -2, 1, 3 which is option C

3 0
3 years ago
Select equivalent or not equivalent for each pair of expressions
marissa [1.9K]

Answer:

1: equivalent

2: equivalent

3: not equivalent

Step-by-step explanation:

for 1 & 2, you just switch the terms, but for 3, the 6z is not negative in the first expression, but it is in the second.

3 0
3 years ago
Are these triangles similar?
Oxana [17]
Not similar is correct
5 0
3 years ago
Read 2 more answers
Which statement is true?
Allushta [10]
Im pretty sure it is the first one
5 0
3 years ago
Solve for t in scientific formula d=rt
yarga [219]
The problem is: d=rt
you are solving for r

d=rt
--  --
t    t


you divide both sides by r, so your answer is:

d/t=r or r=d/t

I hope this helped! :))
3 0
3 years ago
Other questions:
  • tony has 7/8 of a candy bar. he wants to split the bar into servings that are 3/10 of the bar. how many servings can he make?
    6·1 answer
  • I will give you the brainlessest if you awnser the following plz and thank you so much
    11·1 answer
  • What is the probability that Elissa selects two silver colored coins please help
    11·1 answer
  • Evaluate the expression without using a calculator.
    10·2 answers
  • (12) Which equation has irrational solutions?<br> Group of answer choices
    8·1 answer
  • Can somebody help me get 3 Brainliest but answer this question first 145%24
    13·1 answer
  • PLEASE HELP QUICK!! The following two triangles are similar. Solve for x, please show all your work!!​
    5·1 answer
  • Evaluate x² - y2 <br> if x = -4 and y = .5.
    12·2 answers
  • What is 7 times 7 + 93?
    14·2 answers
  • An insurance company charges Ted $1400 per year for insurance on his home. The company has predicted that there is a 10% chance
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!