In Still Water, Peters Boat Goes 4 Times as Fast as the Current of the River. He Took a Trip 15 Miles Up the River, Then Came Back. His Entire Trip Lasted 4 Hours. Find the Rate of the Rivers Current.

Answers

Answer 1

Answer:

2 km/h

Step-by-step explanation:

Let

Rate of river current = x km/h

Speed of Peter's boat = 4x km/h

He takes 15 km trip up (opposite direction)

His speed upstream = 4x - x

= 3x

His speed is 3x and distance is 15 km

Time = Distance / Speed

15/3x

= 5/x

And

Moving downstream (same direction)

Speed will be 4x + x = 5x

Distance = 15km,

speed = 5x

Time = Distance / Speed

= 15/5x

= 3/x

Total time take for trip = 4 hours

Total time take for trip = upstream + downstream

4 =5/x + 3/x

4 = 8/x

Cross product

4 * x = 8

x = 8/4

x = 2

Rate of river current = x km/h

= 2 km/h

Answer 2

Answer:

2mph

Step-by-step explanation:

acellus


Related Questions

Find the volume of a rectangular prism with a length of 5 cm, a width of 5 cm and a
height of 20 cm, to the nearest tenth of a cubic centimeter.

Answers

Answer:

500 cubic centimetres

Step-by-step explanation:

What’s the answer for this

Answers

Answer:

4) y + 3 = 6x

Step-by-step explanation:

The y-intercept of your graph is (0, -3)

Putting 4) in standard form:

y = 6x - 3 the y-intercept is also (0, -3)

The answer is 4 don’t ask me how. I just know.

Which function graph is shown

Answers

Answer:

A) y=3cos(-x)

Step-by-step explanation:

Because the amplitude of the graph is 3, this eliminates options C and D as their amplitudes are different. With the period of the graph being 2π, B cannot be correct because that would have a period of π/2. Therefore, A is correct.

The graph shows the absolute value parent function. Which statement best describes the function?
A. The function is positive when x > 0.
B. The function is always positive.
C. The function is positive when x< 0 and when x > 0
D. The function is positive when x< 0

PLEASE HELPPP!!!!

Answers

The function of the absolute value is always positive the correct answer would be option (B).

What is a graph?

A graph can be defined as a pictorial representation or a diagram that represents data or values.

What is absolute value?

Absolute value is defined as the magnitude or size of a number, no negatives are allowed. The distance a number is from 0 on the number line is known as the absolute value of the number.  

For example, |5| is 5 because it is 5 units away from 0.  Also, |-5| is also 5 because -5 is 5 units from 0.

We have to determine the statement best describes the function.

We have been given that the graph represents the absolute value parent function.

Since the parent function's graph with an absolute value that is always positive.

Therefore, the graph of the absolute value parent function would be always positive.

Hence, the correct answer would be option (B)

Learn more about the absolute value here:

brainly.com/question/1301718

#SPJ2

help me solve for m<4 and m<5 and x

Answers

Answer:

x = 18

Angle 4 = 31 degree

Angle 5 = 59 degree

Step-by-step explanation:

According to the question, angle 3 is 90 degree and the sum of angle 4 and 5 is equal to the angle 3 as they are vertically opposite angles.

Angle 4 + angle 5 = 90 degree

Angle 4 = 2 x - 5

angle 5 = 4 x - 13

So, according to the question,

2 x - 5 + 4 x - 13 = 90

6 x - 18 = 90

6 x = 108

x = 18

So, angle 4 = 2 (18) - 5 = 31 degree

So, angle 5 = 4 (18) - 13 = 59 degree

Put commas and write the following numbers in Indian system of
numeration
a) 2345678
b) 5678090
Put commas and write the following numbers in International system of
numeration
a) 234589
b) 9807062

Answers

1. Indian System:-

(a) 23,45,678

(b) 56,78,090

2. International System:-

(a) 234,589

(b) 9,807,062

Given the linear equation 5x+3y-9=0. Write another linear equation in two variables such that the geometrical representation of the pair so formed are parallel lines​

Answers

Answer:[tex]5x+3y+1=0[/tex]

Step-by-step explanation:

Given

The linear equation is [tex]5x+3y-9=0[/tex]

The other linear equation parallel to the given line can be represented by

[tex]5x+3y+c=0[/tex]

Here, c can take any value . for example c=1, line becomes

[tex]\Rightarrow 5x+3y+1=0[/tex]

Which of the following equations will be the graph of a parabola?


y = 5x + 12

y = x^2 - 2x + 3

3x^5 - 6x^3 + 4x + 12

y = 2 ⋅ 3^x

Answers

Answer:

Y=x^2 -2x + 3

Step-by-step explanation:

it's quadratic like:-)

can someone help me solve the inequality-2x+4>8 with the steps? Thanks

Answers

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

[tex]\rm{-2x + 4 > 8}[/tex]

[tex]\large\textsf{SUBTRACT 4 to BOTH SIDES}[/tex]

[tex]\rm{-2x + 4 - 4 > 8 - 4}[/tex]

[tex]\large\textsf{CANCEL puts 4 - 4 because that gives you 0}[/tex]

[tex]\large\textsf{KEEP: 8 - 4 because that helps solve for the x-value}[/tex]

[tex]\rm{8 - 4 = \boxed{\bf 4}}[/tex]

[tex]\rm{NEW\ EQUATION: -2x > 4}[/tex]

[tex]\large\textsf{DIVIDE -2 to BOTH SIDES}[/tex]

[tex]\mathsf{\dfrac{-2}{-2}>\dfrac{4}{-2}}[/tex]

[tex]\mathsf{CANCEL\ out: \dfrac{-2}{-2}\ because\ that\ gives\ you\ 1}[/tex]

[tex]\mathsf{KEEP: \dfrac{4}{-2} \ because \ it \ helps \you \ compare\ to \ the \ x-value }[/tex]

[tex]\mathsf{\dfrac{4}{-2} = \boxed{\bf -2}}[/tex]

[tex]\rm{\bold{x < -2 }}[/tex]

[tex]\rm{It\ is \ an\ O PENED \ circle \ shaded \ to \ the \ left \ side \ of \ the \ number \ line}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: } \mathsf{\bf x < -2}}}\huge\checkmark[/tex]

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

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

Help me to do exercise no 5​

Answers

Answer:

Step-by-step explanation:

a) x + 20  = 70                 Vertically opposite angles are congruent

b) 2x - 50 = x + 20           Vertically opposite angles are congruent

c) 3x - 10  + 140 = 180           Linear pair

 

Answer:

(a) 70= x+20 (vertical angles are equal)

70 - 20=x

50=x

(b) x +20 = 2x -50 (vertical angles are equal)

20 + 50 = 2x - x

70 = x

(c) 140 +3x -10=180 (angles on the straight line)

130 +3x = 180

3x = 180 - 130

3x = 50

x= 50/3

What is a solution of -8x+5>=11
A.-1/2
B.3
C.0.25
D.-1

Answers

Answer:

i got -2

Step-by-step explanation:

1 step; 8*x-5-(11)=0

2 step; 8x - 16  =   8 • (x - 2)

3 step;  Solve :    8   =  0

4 step; Solve  :    x-2 = 0

final part  Add  2  to both sides of the equation :  

                     x = 2

B.
If m ZACB = 180°, and mZACD = 55°, then
mZDCB = [?]
Enter

Answers

Answer:

125

Step-by-step explanation:

/_ ACB = 180

/_ ACD = 55

/_ ACB is made up of /_ACD and

/_ DCB

Hence, /_ ACB = /_ ACD + /_ DCB

*We then plug in the known values*

180 = 55 + /_ DCB

We now solve for the missing angle

Subtract 55 from both sides

125 = /_ DCB

✨Please help me :) ✨

Answers

Answer:

Jaden would have to save $25 each week for next 6 weeks to get the $290 bike.

Step-by-step explanation:

What do we know:

He has $140 to start withHe saves $25 each weekHis bike costs $290

What are we solving for;

We are solving for x (number of weeks it would take Jaden to buy a $290 bike), when y = 290

Equation would be:

y = 25x + 140

So for Jaden to buy a $290 bike, y would have to be replaced with 290, and solve for x;

y = 25x + 140

=> 290 = 25x + 140

=> 290 - 140 = 25x

=> 150 = 25x

=> 150 / 25 = x

=> 6 = x

Therefore, Jaden would have to save $25 each week for next 6 weeks to get the $290 bike.

Hope this help!

find hcf and LCM of 40 ,60 and 80​

Answers

hear here is your answer in attachment attach

Answer:

Step-by-step explanation:

40 = 2*2*2*5  

60 = 2 * 2 * 3 * 5

80= 2 * 2 * 2 * 2 * 5

LCM = 2 * 2 * 2 * 2 * 5 * 3 = 240

HCF = 2*2*5= 20

someone help me answer these two​

Answers

1. Domain (6, 3) to (11, 2)
Range (9,0) to (6,3)
Not a function because two inputs cannot share the same output

2. Domain (1, 50) to (5, 200)
Range (1,50) to (5, 200)
Yes it is a function

Stella earned $72 working 9 hours. How much will she earn in 23 hours?

Answers

Answer: Stella would earn $184 in 23 hours.

Step-by-step explanation: First we need to find the unit rate so start by dividing by 9

[tex]\frac{72}{9} =8\\\frac{9}{9}=1[/tex]

Now we know every hour Stella will earn $8. We can now multiply the amount for 1 hour by 23 to get the amount for 23 hours.

8x23=184

1*23=23

Now we can see that Stella would earn $184 for working 23 hours.

what is the slope that passes through the points : (-2,9) and (4,-7)

Answers

Use the slope formula below:

[tex] \large \boxed{m = \frac{y_2 - y_1}{x_2 - x_1} }[/tex]

The m-term represents the slope.

The formula is the changes of two y-points over the changes of two x-points. We are given two points. Substitute both points in the formula.

[tex] \large{m = \frac{9 - ( - 7)}{ - 2 - 4} } \\ \large{m = \frac{9 + 7}{ - 6} \longrightarrow \frac{16}{ - 6} } \\ \large{m = \frac{8}{ -3 } \longrightarrow - \frac{8}{3} }[/tex]

Therefore the slope is -8/3

Answer

the slope is -8/3

Hope this helps! Let me know if you have any doubts.

Answer:

y = -8 / 3x + 11/3

Step-by-step explanation:

Using the slope formula:

[tex]slope = y = \frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}[/tex]

1. Select one point to be [tex](x_{1} ,y_{1} )[/tex] and the other [tex](x_{2} ,y_{2} )[/tex]

I chose (-2, 9) to be [tex](x_{1} ,y_{1} )[/tex] and (4, -7) to be [tex](x_{2} ,y_{2} )[/tex]

2. Plug the values into the formula:

[tex]y = \frac{-7-9}{4-(-2)} \\\\y= \frac{-16}{6} \\\\y = \frac{-8}{3}[/tex]

3. Finding the c-value by plugging in one of the points into the equation

y = mx + c

9 = -8/3 (-2) + c

9 = 16/3 + c

c = 11/3

4. y = -8/3x + 11/3

Use the tangent ration to find the height of the tree. Round to next whole number.

Answers

Answer:

74.8925767 rounded to 75

Step-by-step explanation:

Please help me ASAP and i mean ASAP

Answers

Answer:

no

Step-by-step explanation:

no

I NEED HELP ASAP IM STRESSJNG OUT

Answers

Answer:

A

Step-by-step explanation:

Using the Sine rule in Δ ABC

∠ B = 180° - (30 + 50)° = 180° - 80° = 100° ( sum of angles in triangle ) , then

[tex]\frac{13}{sin100}[/tex] = [tex]\frac{BC}{sin30}[/tex] ( cross- multiply )

BC × sin100° = 13 × sin30° ( divide both sides by sin100° )

BC = [tex]\frac{13sin30}{sin100}[/tex] ≈ 6.6 ( to the nearest tenth )

10 points!
If you are going to answer, actually answer!

Answers

Answer:

1/27

Explanation:-

(1/3)^3=(1x1x1)/(3x3x3)=1/27

Answer:

0.03703703703 or

                                                                                                                                 ²/27

sorry i am late but still hope I helped

Step-by-step explanation:

Identify the slope and y-intercept for the line y = -2x -3.

Answers

Answer:

The slope is -2 and the y intercept is -3

Step-by-step explanation:

y = -2x -3

This equation is written in slope intercept form

y = mx+b where m is the slope and b is the y intercept

The slope is -2 and the y intercept is -3


Helpppp meeeeeeeeeee

Answers

Answer:

1

[tex] = \frac{45}{100} \times 75 \\ = 33.75[/tex]

2.

[tex] \frac{150}{100} \times 36 \\ = 54[/tex]

3.

[tex] \frac{850}{100} \times 255 \\ = 21675[/tex]

On Saturday, the fruit and juice bar was selling 27 glasses of fruit punch an hour. By 7 p.m., they had sold 243 glasses. If their goal was to sell more than 324 glasses of fruit punch, find the number of hours, h, they must stay open past 7 p.m. to make their goal.

Answers

Answer: 3 hours

Step-by-step explanation:

the answer this can be solved by the function:

324 = 27x + 243

-243          -243

27x = 81

/27     /27

x = 3 hours past 7.

Share $150 among John, Mary, and Sarah so that each of the two girls receives twice as much as John. Calculate the amount of money Jon received.

Answers

They get 60 dollars each Sarah and Mary and John gets 30 dollars because 60+60=120 and add 30 and it is 150 and 30 is half of 60

How many solutions does the system have?

4x−6y=−24
2x−3y=−6

Answers

Answer:

none

Step-by-step explanation:

if we plot it, it's clear, but you might also spot that the plotted lines will be parallel in the equation

because x and y in line two are the same multiple of these in line one (both values are just the half)

plotted with desmoes

Each student gets a bag with 6 celery sticks in it. Dwayne eats 4 of his celery sticks. Write the fraction of celery sticks Dwayne eats. Dwayne thinks he ate 2 3 of his celery sticks. Is he correct?

Answers

He is correct 4/6 is equivalent to 2/3

If h(x) = 4x - 3, what is an equation for h-1(x)?

Answers

Answer:

h(x-1)=4x-7

Step-by-step explanation:

Given :

h(x)=4x-3

Now,

putting the value of x =x-1

h(x-1)=(4(x-1)-3)

h(x-1)=4x-4-3

h(x-1)=4x-7

Answer will be h(x-1)=4x-7

please answer and explain the link below

Answers

Answer:

2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Algebra I

Terms/CoefficientsFunctionsFunction Notation

Calculus

Limits

Limit Rule [Constant]:                                                                                                [tex]\displaystyle \lim_{x \to c} b = b[/tex]

Definition of a Derivative:                                                                                         [tex]\displaystyle f'(x) = \lim_{h \to 0} \frac{f(x + h) - f(x)}{h}[/tex]

Step-by-step explanation:

Step 1: Define

Identify

f(x) = 2x - 5

Step 2: Differentiate

[Limit] Substitute in x [Function f(x)]:                                                                [tex]\displaystyle \lim_{\triangle x \to 0} \frac{[2(x + \triangle x) + 5] - f(x)}{\triangle x}[/tex][Limit] Substitute in function:                                                                           [tex]\displaystyle \lim_{\triangle x \to 0} \frac{[2(x + \triangle x) + 5] - (2x + 5)}{\triangle x}[/tex][Distributive Property] Distribute 2:                                                                 [tex]\displaystyle \lim_{\triangle x \to 0} \frac{[2x + 2\triangle x + 5] - (2x + 5)}{\triangle x}[/tex][Distributive Property] Distribute negative:                                                     [tex]\displaystyle \lim_{\triangle x \to 0} \frac{2x + 2\triangle x + 5 - 2x - 5}{\triangle x}[/tex][Subtraction] Combine like terms:                                                                   [tex]\displaystyle \lim_{\triangle x \to 0} \frac{2\triangle x}{\triangle x}[/tex][Division] Simplify:                                                                                            [tex]\displaystyle \lim_{\triangle x \to 0} 2[/tex]Evaluate limit [Limit Rule - Constant]:                                                              [tex]\displaystyle 2[/tex]

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Derivatives

Book: College Calculus 10e

henry who is 3 years younger than sandra is 14 write an equation to represent sandras age

Answers

s = 14-3 (s being sandras age)
Other Questions
scale on a map is 1:800000. motorway is 120 km long . what distance will it be on the map There are approximately ___types of federal grants.O A. 10B. 15O c. 3O D. 4 Match each quotation from Eleanor Roosevelts speech with the correct paraphrase. There are 8 girls and 12 boys in Miss Reading's homeroom. Five of the girls play sports and 3 do not play sports. Eight of the boys play sports and 4 do not play sports. If a student is selected at random, what is the probability that the student is a boy or plays sports? Express your answeras a fraction. Suppose you know a company's stock currently sells for $31 per share and the required return on the stock is 0.13. You also know that the required return is evenly divided between the capital gains yield (G) and the dividend yield (D1/P0) (this means that if the required retun is 9%, the capital gains yield is 4.5% and the dividend yield is 4.5%).If it's the company's policy to always maintain a constant growth rate in its dividends, what is the current dividend per share? Answer with 2 decimals (e.g. 1.23) 5(a^6+2a^5)-6a(5a^4-7a^3) Which of the following points is a solution to the system of inequalities below?y What is the price coke difference between a strong and weak acid? how do you tell the person you're dating that you're demisexual? bc I really like my bf, but I really don't experience attraction like that and I feel like I need to make it clear somehow without telling him, "yo, I don't think you're cute, but I don't think anyone" bc it seems mean. thanks :) and happy pride month A rectangle measures 8/3 inches by 9/4 inches. What is its area? The multiplier effect states that a manager's influence on the organization ________.A can have great and continual cost implicationsB can result in many types of company diversityC is felt repeatedly for many daysD also results in large consequences for employees' familiesE has implications far beyond the results that can be achieved by one person acting alone Which input value produces the same output value for the two functions on the graph?x = 1x = 0x = 3x = 4 A person is born a US citizen if he or she has parents who When we use stratigraphy to classify sediments, we use a. the orientation of the magnetic field at the time it was deposited b. all of these things and anything else we can find to establish a sequence of formation c. the nature (properties) of the sediment d. the fossil content (if any) an object is in set in ___ by using ___ to enact ___ upon the object. A. motion,force,energy B. energy,force,motion C. Force,motion,energy D. motion,energy, force functions of the liver The point (3, 18) is on the parabola y =ax2. Whatis the value of a?A. 9B. 2C. -9D. -2 Which of the following statements concerning common stock and the investment banking process is NOT CORRECT? Group of answer choicesIf a firm sells 1,000,000 new shares of Class B stock, the transaction occurs in the primary market. Listing a large firm's stock is often considered to be beneficial to stockholders because the increases in liquidity and reputation probably outweigh the additional costs to the firm. Stockholders have the right to elect the firm's directors, who in turn select the officers who manage the business. If stockholders are dissatisfied with management's performance, an outside group may ask the stockholders to vote for it in an effort to take control of the business. This action is called a tender offer. The announcement of a large issue of new stock could cause the stock price to fall. This loss is called "market pressure," and it is treated as a flotation cost because it is a cost to stockholders that is associated with the new issue. The preemptive right gives each existing common stockholder the right to purchase his or her proportionate share of a new stock issue. IM NOT SMART SO PLZ HELP :) BRAINLIEST WILL BE MARKED Future value. A speculator has purchased land along the southern Oregon coast. He has taken a loan with the end-of-year payments of $7 comma 000 for 8 years. The loan rate is 5 %. At the end of 8 years, he believes that he can sell the land for $50 comma 000 . If he is correct on the future price, did he make a wise investment?