A person swims 11 miles downstream in the same time they can swim 7 miles up stream. The speed of the current is 4 miles per hour.
These situations can be represented by the equations
Downstream: t=11/s+4 Upstream:t=7/s-4,
where t stands for time and s is the speed of the swimmer. What is the speed of the swimmer swimming in still water?

Answers

Answer 1

Answer:

s = 18 mph

Step-by-step explanation:

At downstream, time is; t = 11/(s+ 4)

At upstream, time is; t = 7/(s - 4)

Since they both are passed in the same time, then ;

11/(s+ 4) = 7/(s - 4)

Cross Multiply to get;

11(s - 4) = 7(s + 4)

11s - 44 = 7s + 28

11s - 7s = 44 + 28

4s = 72

s = 72/4

s = 18


Related Questions

1. What is the experimental probability of not landing on a 6?

2. What is the theoretical probability of not landing on a 6?

Answers

Answer:

1. 6/6

2. 5/6

Step-by-step explanation

You did not give me the ex. Probability so I assumed that there were 6 equal parts. so the chance of not landing on a 6 is 5.

On Monday the high temperature was 80 degrees. the high for Tuesday was 60 degrees. what is the percent change in temperature from Monday or o Tuesday?
increase or decrease?
_____%

Answers

Answer: decrease of 25%

Step-by-step explanation:

Look at the picture to see question please help

Answers

I’m a little rusty but maybe c

Help me please and thank you x

Answers

hope this helps:

x is 10 degrees...

X is 30 degrees ........

Find the mean, median, and mode of the following data set

17, 18, 13, 15, 12, 11, 35, 18, 14

Answers

Answer: Mean- 17

Median- 15

Mode- 18

Step-by-step explanation: Your welcome. Branliest, please.

The U.S. Department of Labor reports that the average prices for a dozen eggs in the month of May for the past 11 years are as follows: $1.19, $1.21, $1.50, $1.93, $1.50, $1.52, $1.69, $1.69, $1.87, $2.00, $1.96 Round to the nearest hundredth (cent) if necessary. The mean price of eggs over this 11-year period is The median price of eggs over this 11 -year period is

Answers

Answer:

Mean price of eggs = $1.64

Median price of eggs = $1.69

Step-by-step explanation:

Mean is the average of the given data

Mean = sum of data/sample size

Sum of data = 1.19+1.21+1.50+1.93+1.50+1.52+1.69+1.69+1.87+2.00+1.96

Sum of data = $18.06

Sample size = 11

Mean price of eggs =18.06/11

Mean price of eggs = $1.64

Hence the mean price of eggs over this 11-year period is $1.64

Median is the price in the middle after rearrangement

Rearranging the data

1.19, 1.21, 1.50, 1.50, 1.52,) 1.69, (1.69, 1.87, 1.93, 1.96, 2.00

Since 1.69 falls in the middle after rearranging;

Hence the median price of eggs over this 11 -year period is $1.69

Naomi and Peter's teacher receives an order of 127 books.The books are delivered in 10 full cartons and a smaller package containing 7 books.Naomi and Peter determine how many books are in each cartoon using different methods PLEASE ANWSER QUESTIONS BELOW!!!!!!! 1. What is the answer 2.In both solutions the first step is to multiply or divide by 10? 3.The second step is to multiply or divide by 10?

Answers

Answer: 1. subtract 7

2.divide 10

Step-by-step explanation:

I took the quiz

I don’t know if this is correct !!!!!!!!!! Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answers

Answer:

ASA and it can be proven that the triangles are congruent

Step-by-step explanation:

If I have a right rectangular prism with a base area of 22 units and a height of 6 units, what is the volume of this prism?

Answers

Answer:

132 units cubed

Step-by-step explanation:

4)
Which set of numbers are equivalent?
A)
5
5%, 0.5,
100
B)
8
8%, 0.08,
10
C)
10.
10%, 0.1,
100
12
D)
12%, 0.012,
100

Answers

Answer:

12%,0,012,

100 ok this answer

This answer is the letter d

If a line AB is translated in a plane to form A'B', what is true about AB and A'B'?

AA' = BB'

A'A' = B'B'

AA = BB

AB = BB

Answers

Answer:

ab=bb

Step-by-step explanation:

Lou cuts 2 and 1 third yards of fabric from a 9-yard roll of fabric from the roll. How much fabric is left on the roll?

Answers

Answer:

6 2/3

Step-by-step explanation:

Fabric left on the roll = total fabric on the roll - fabric cut from the roll

9 - [tex]2\frac{1}{3}[/tex] = 6[tex]\frac{2}{3}[/tex]

The ratio of the length to the width to the height of an open rectangular tank is 10: 5: 8. The height is 18 feet longer than the width. What is the volume of the tank

Answers

Answer:

hi

Step-by-step explanation:

how are you

Answer:  A: L: W: H = 10: 5: 8

Step-by-step explanation:  The height of the tank is 18 feet longer than the width

H = 8 parts, W = 5 parts => 8 – 5 parts = 18 feet i.e. 3 parts = 18, 1 part = 6 feet

Hence, L = 10 * 6 = 60 feet

W = 5 * 6 = 30 feet

H = 8 * 6 = 48 feet

Volume = 60 * 30 * 48 = 86400 ft³

Surface Area = 2 * (30 * 60 + 48 * 60 + 30 * 48) =12240 ft²

please help me and explain the ones that are circled

Answers

Answer:

Step-by-step explanation:

it mean to figure out what number you had before the % took some of the number away

Three students, Evan, Angel, and Connor, line up one behind the other. How many different ways can they stand in line?

Answers

Answer:

They can line up 6 different ways in line

Step-by-step explanation:

Connor, Angel, Evan

Connor, Evan, Angel

Angel, Connor, Evan

Angel, Evan, Connor

Evan, Connor, Angel,

Evan, Angel, Connor

Hope this helps! Pls mark brainliest

(+12)-(-5)+(-3)+(+9)-(-25)-(-24) help me ​

Answers

Answer:

64

Step-by-step explanation:

12+5-3+9+25+24

23+25+24

48+24

64

64 is the answer your looking for

If Aliya can make 10 bracelets in 2 days, how long will it take her to make 35 bracelets?​

Answers

Answer:

about 6 1/2

Step-by-step explanation:

10x3=30

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please help this is confusing.

Answers

Answer:

The mashi e drilled down 45 feet. So -45

Step-by-step explanation:

72 = 24h

X = 15h

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Answers

Answer:

28

Step-by-step explanation:

Think of the shape being made up of a square on top that is 4 units by 4 units and a trapezoid on the bottom with bases 4 and 2 and height 4.

area = area of rectangle + area of trapezoid

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i say 28 also from my math

The base of a cone has a radius of 6 centimeters. The cone is 7 centimeters tall. What is the volume of the cone to the nearest tenth

Answers

Answer:264cm^3

Step-by-step explanation:

Volume of a cone= 1/3×A×h, where A is base area

Base area=πr^2

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0.21
to
0.56
as a fully simplified ratio.

Answers

Answer:

0.35

Step-by-step explanation:

Jaydin needs to know the volume of the cylinder shown. Which expression will give him the correct volume?

Answers

Answer:

2 or 3.14 (24^2) (2.5)

Step-by-step explanation:

48/2=(radius)24

(pi)r^2 x hight= volume

(pi)24^2 x 2.5

HELPPPPPP PLSSSS HELPPPPP PLLLLLSSS HELPPPPP

Answers

Answer:

5x+3=23.        Subtract.        -3

Step-by-step explanation:

5x+3=23

5x=23-3

5x=20

x=20÷5=4

x=4

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Answers

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

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Answers

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Answers

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Can someone please help me

Answers

Answer:

3x=9

3x*1/3=9*1/3 [reciprocal mean switching the fraction so 3/1--->1/3]

x=3

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{3x = 9}[/tex]

[tex]\large\text{DIVIDE 3 to BOTH SIDES}[/tex]

[tex]\mathsf{\dfrac{3x}{3}=\dfrac{9}{3}}[/tex]

[tex]\large\text{CANCEL out: } \mathsf{\dfrac{3}{3}} \large\text{ because that gives you 1}[/tex]

[tex]\large\text{KEEP: } \mathsf{\dfrac{9}{3}}\large\text{ because that helps us solve for x }[/tex]

[tex]\large\text{New equation: x = } \dfrac{9}{3}[/tex]

[tex]\mathsf{\dfrac{9}{3} = \bf 3}[/tex]

[tex]\boxed{\boxed{\large\textsf{Therefore, your \underline{answer} is: \huge \bf x = 3 }}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Write a word sentence for the equation y + 3 = 5.

Answers

Answer:

A number plus 3, sum is 5.

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