Question

The speed of a river current is 5 mph. If a boat travels 30 miles downstream in the same time that it takes to travel 20 miles​ upstream, find the speed of the boat in still water.

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Algebra

Related Algebra Q&A

Find answers to questions asked by students like you.

Q: I need help with number 35

A: The left side is a line joining (-1,1) and (0,0).We will find the equation of the line. (used (y-y1)...

Q: Add rational expressions w a common denominator  9t/5+3/4

A: Consider the given expression.

Q: Find an equation of the circle that satisfies the given conditions. (Give your answer in terms of x ...

A: We know that equation of circle with center (h,k) and radius r is 

Q: Graph the solution set for the system of linear inequalities  x>3 y>-1

A: Auxiliary equations are x=3 and y=-1We graph those lines first.x=3 will be a vertical line passing t...

Q: Complete the table for a savings account in which interest is compounded continuously. (Round your a...

A: The given details of the investment account are,

Q: Farmer Ed has 900 meters of fencing, and wants to enclose a rectangular plot that borders on a river...

A: Area = length x widthArea=A= x(900-2x) 

Q: Remove a common monomial factor and factor the diffrence of two squares. 2x2-72

A: Given,             2x2-72Now, taking 2 common             = 2 (x2-36)         (a2-b2 = (a + b) (a - ...

Q: Sketch the graph    3x-6y=12

A: Given equation is

Q: Why is this wrong?

A: Given, time and simple interest rate

Q: Find the average rate of change of f from 3 to 8. f(x)=-2x^2+4x

A: Given function is

Q: Factor: ​f(x) = 2x^2 +​ (-5 - 2​i) x^2 +​ (-4 - i) x + (3 + i​) into linear factors if "3+i" is a ze...

A: We will use synthetic division to find the other factor. Quotient = 2x^2+x-1 and remainder = 0 

Q: [Consumers Mathematics: Accumulation Factor Method ]  Karen deposited P 12500 in savings bank on Jun...

A: Consider the given informationDeposit amount P = 12500Rate of change R = 6% compounded quarterlyTime...

Q: the first choice is growing or decaying.

A: Click to see the answer

Q: How do I solve these equations? And How do I determine the type of solutions they are?

A: given information.

Q: Solve the following system of equations by using matrices x+y-2z=9 x-y+z=-4 x+y-z=6

A: Given system of equation is

Q: Use a change-of-base formula to evaluate each logarithm. (Round your answers to four decimal places....

A: To compute the given logarithms by using base change

Q: What are the blanks?

A: Click to see the answer

Q: SU into th MATH 1314 Coll MATH 1316 МАTH Offi Solve the inequality. Write the solution set in interv...

A: Given inequality is 

Q: Quadratic equations are used for many applications. The formula to solve quadratic equations can be ...

A: The roots of a quadratic equation can be found using the following formula.

Q: Write equation slope intercept form identify the slope & the Y intercept number 50

A: We will try to express it in y=mx+b form.

Q: Represent the number you would have to add to an expression of the form x2+bx to make a complete squ...

A: A complete square would be of the form:Comparing this to the equation given:Hence the missing term f...

Q: If an investment company pays 6% compounded semiannually, how much should you deposit now to have $1...

A: Compound interest formula:

Q: 12-1/3u=2

A: Subtract 12 from both sides. 

Q: a. Which of the following equations would model an exponential quantity that begins at a level of 16...

A: Exponential growth formula:

Q: The weight a suspension bridge can support, B, in tons, is directly proportional to the square root ...

A: Given:

Q: Find the vertical asymptote(s), the horizontal asymptote(s), x-intercept(s), the y-intercept, and us...

A: To determine the vertical asymptote, horizontal asymptote, x-intercept, y-intercept.

Q: Reading Graphs and the Rectangular Coordinate System Complete a table of solutions to a linear equat...

A: Given

Q: solve for y: ln(3-y)-ln(y) = 2x + ln(5) without a calculator

A: Given equation is :Moving all the logarithm terms and using the property: ln(a) – ln(b) = ln(a/b)Con...

Q: What are the blanks?

A: To find the monthly growth facto r, given the yearly growth factor

Q: Solve the system of equations by either the addition method or the subtitution method. Express numbe...

A: Click to see the answer

Q: calories 139, sodium 386 mg calories 191, sodium 506 mg Use this to estimate the slope of this regre...

A: Using the two given points use slope formula for a line between two points to estimate the slope of ...

Q: How to find feasible region?

A: Given,

Q: Determine whether the ordered pair satisfies the equation. y=-2/5x-1; (5,-3)

A: The given equation is,

Q: What are the blanks?

A: Click to see the answer

Q: A rectangular piece of cardboard is a = 10 in. longer than it is wide. Squares 2 in. on a side are t...

A: Click to see the answer

Q: Determine if the function is even, odd or neither f(x) = x3 - x + 3

A: According to rules of even or odd functions, if f(-x) = f(x), it's an even function, if f(-x)= -f(x)...

Q: For the problem: f(x)=x^2+x-12/x+3 a. Find the x and y intercepts. b. Please test for symmetry: is t...

A: To find x intercept set y=0 and solve for x.Answer: x intercepts = -4 , 3

Q: Solve the following inequality by using a graphical method.   x2 - x - 2 < 0   What is the soluti...

A: The given inequality is x2-x-2<0.The graph is sketched as follows.

Q: What are the blanks?

A: Given: -

Q: A rectangle has an area of 98 cm2. The length of the rectangle is 2 times the width. Solve for the w...

A: Given,           A rectangle has an area of 98 cm2. The length of the rectangle is 2 times the width...

Q: Factor out a negative real number from the polynomial and then write the polynomial factor in standa...

A: GCF of -4x^2-8x+20 is -4.