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
Aleonysh [2.5K]
3 years ago
12

If right you get brainiest!

Mathematics
1 answer:
denis23 [38]3 years ago
6 0

Answer:

20 mph

Step-by-step explanation:

time = distance / speed

speed up stream = s - 4

speed down stream = s + 4

time up = time down

8 / (s - 4) = 12 / (s + 4)

cross multiply

8s + 32 = 12s - 48

subtract 8v from both sides

32 = 4s - 48

add 48 to both sides

80 = 4s

Divide both sides by 4

20 = s

20mph

You might be interested in
A binomial experiment consists of 17 trials. The probability of success on trial 10 is 0.4. What is the probability of success o
Ivenika [448]

Answer:

.4

Step-by-step explanation:

The probability of success from each event is always equal in a binomail distribtuion because the trails are independent of each other

7 0
3 years ago
NEED THIS ASAP Solve each absolute value by expression <br><br> 1) [x+8]=16
IgorLugansk [536]

x +  8= 16

\rightarrow \: x = 16 - 8

\rightarrow \: x = 8

5 0
3 years ago
D. 3h =
vfiekz [6]
Answer: e. 2h + 3 = 10; h = 3.5h

Explanation:

Jane can run 2 miles per hour. (2h)

He need to run 10 miles in total and has done 3 so far. (+ 3 = 10)

The equation can be written:

2h + 3 = 10
2h = 7
h = 7/2 = 3.5



8 0
3 years ago
a bag contains 14 red tiles, 20 blue tiles, and 16 green tiles, a tile is randomly drawn from the bag. if this is done 40 times
ololo11 [35]
Total=14+20+16=50
P(blue)=20/50=2/5

so, answer=(2/5)*40=16
7 0
3 years ago
Read 2 more answers
On Saturday, Mark sold 2 7/8 gallons of lemonade. On the same day, Regan sold 2/3 as much lemonade as Mark. How much lemonade, i
MAXImum [283]
2 7/8= 2/3L
Divide both sides by 2/3 and get 4.31 or 4 5/16
Hope this helps!!
6 0
4 years ago
Other questions:
  • 3 With 72 million bicycles, correct to the
    8·1 answer
  • I need helpppp with the answers
    8·1 answer
  • Solve for x...<br><br> Z = 8(x-h) <br><br> X = ????<br><br> Please state what X is...
    5·2 answers
  • 3x+15+10x+9=180 what angle is formed?
    10·2 answers
  • Question 3 and 5 please I rly need help
    14·1 answer
  • An online instructor sends updates to students via text. The probability model describes the number of text messages the instruc
    7·1 answer
  • Write the reciprocal of -8
    12·1 answer
  • 1. In 1990, the value of a home is $170,000. Since then, its value has increased 5% per year.
    5·2 answers
  • Brainliest if you pay for it
    7·2 answers
  • Generate a frequency table for the following data: 3, 12, 25, 2, 3, 6, 17, 17, 15, 13, 20, 12, 21, 18, 19.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!