A boy walks 5 ķm at vkm/hr. He then cycles 15 km at 2v km/hr. In terms of v, write down the time taken in hours
1. When walking
2. If the total time for journey is 2h 35min, find the boy's walking speed​

Answers

Answer 1

Answer:

The time when walking is 5/v hours

The walking speed is 4 26/31 km/hr

Step-by-step explanation:

Mathematically;

time = distance/speed

So the time taken when walking will be;

5/v

The time taken when cycling will be:

15/2v

The term 2h 35 minutes is same as 2 35/60

= 2 7/12

If we add the whole times together, we get 2 7/12

Thus;

5/v + 15/2v = 2 7/12

5/v + 15/2v = 31/12

(10 + 15)/2v = 31/12

25/2v = 31/12

12 * 25 = 2v * 31

31v = 6 * 25

v = 150/31

= 4 26/31


Related Questions

What is 2x2 plus 3 times y and it equals b?

Answers

Answer: The answer is 7-b=-y

Step-by-step explanation: You subtract b from one side to the other, and then do the same with y

HELP!! (20-30 points) and brainlist

Answers

Answer:

82.8

Step-by-step explanation:

Formula

multiply the length value by 36

(29-(-7):
= =a
Look at picture

Answers

Answer:

Four

Step-by-step explanation:

29 plus 7 = 36 divided by 4= 9

Does anyone know this? Please and ty! This is worth 15 points but please don’t take advantage :(

Answers

Answer:

A

Step-by-step explanation:

If you were to dilate a point by a scale factor of 2, then if you have the point (-4,0), both the x value and the y value would be multiplied by 2, giving a coordinate of (-8,0). If you do this to the other point, you get (0,4).

Now graph it out, and you get a parallel line that is not right on top, eliminating answer B. It's not C because it is parallel, not intersecting. And it's not D because they are related, they're parallel.

Hope this helps!

Find the unit rate
a. 5 movie tickets for $25.00
b. mowed 5 yards for $35.00
c. 6 calculators cost $240.00
d. 8 dollars for 2 cans of tuna ​

Answers

Answer:

A.  $5

B.  $7

C.  $40

D.  $4

Step-by-step explanation:

To find the unit rate, you need to divide the cost by the amount.

A.  $25/5 = $5 for a movie ticket

B.  $35/5 = $7 for one yard

C.  $240/6 = $40 for a calculator

D.  $8/2 = $4 for a can of tuna

what is 7/10 divided by 6 to the second power?

Answers

Answer:0.01944444444 if it is like that then there is going to be a line above 4 for repeating.

Step-by-step explanation:

please let me know if this helps I had questions like this but I don't know if that what they are asking for you to do too! have a great day and I dont mean to be greedy but may i please have BRAINLIEST?    

z=32+41.9i
What are the real and imaginary parts of z?
--------------------------------------------------------------
A. Re(z) = 32 and Im(z) = 41.9
B. Re(z) = 32 and Im(z) = 41.9i
C. Re(z) = 41.9i and Im(z) = 32
D. Re(z) = 41.9 and Im(z) = 32

Answers

A. Re(z)= 32 and Im(z)= 41.9

The real part of a complex number z=a+bi is ‘a’, and the imaginary part is ‘b’

Help please true or false?

Answers

False true I am really sry if a m wrong

I need help answering that I’m lost and it’s a 3 step problem

Answers

hi hi hi i believe 32

Who can answer my question in square LMNO find the length of LM

Answers

Answer:

10 units

Step-by-step explanation:

LMNO is a square.

All sides of square are equal

MN = LM

3x + 1 = x + 7

3x - x = 7 - 1

2x = 6

x = 6/2

x = 3

LM = x + 7 = 3 + 7 = 10

LM = 10 units

Please help me with this homework

Answers

Answer:

your x's will be -2, -1 , 0 , 1, 2

and your y's will be -5, -2, 1, 4, 7

Estimate by rounding the divisor to the nearest tens place and the dividend to the nearest
compatible number. Then find the quotient.
Enter the remainder, if any, as a fraction in simplest form.
59 ) 5,613
The estimate is?
The quotient is?

Answers

Answer:

lil mosey

Step-by-step explanation:

What is 5[cos(Pi/4) + I sin (pi/4)] raised to the 3rd power?

Answers

Answer: The answer is C on edge

Step-by-step explanation:

write in slope-intercept form 3x-9=7y+8

Answers

Answer:

y = 3 /7 x − 17 /7

Step-by-step explanation:

HELP ME 50 POINTS RN.

Answers

Answer:

the last one. hope I help u

Answer:

S<30

need explain that?

Write the expanded form of the expression

r(−3−5t)

Answers

-3r -5tr, all you need to do is distribute the variable.

An athlete runs 8 miles in 50 minutes on a treadmill at this rate how long will it take the athlete to run 9 miles​

Answers

First you would find out how many minutes it took him to run one mile so it would be 50/8= 6.25 so add one more mile it would be 56 minutes and 15 seconds

Answer:

56.25 minutes

Step-by-step explanation:

1 mile is 6.25 minutes

9 miles is _____?

6.25 minutes x 9 miles =

56.25 minutes

Find Unit Rate to help solve

Hope this helps :)

Which ordered pair does NOT represent a point located in IV Quadrant ?

A (0.001, -0.001)
B (0, -5)
C (0.5, -8.75)
D (9, 999, -9, 999)

Answers

Answer:

B

Step-by-step explanation:

If a point is on the line of origin it doesn't count as being in any quadrant.

Please help and give details :)

Answers

7x+4y-28=0 is the answer

Which ratio is equivalent to 5:9?
9:45
25:81
27:15
30:54

Answers

sorry but none are correct

Answer:

The Answer is D 30:54

Step-by-step explanation:

5 times 6 is 30 and 6 times 9 is 54

A jar contains 42 red marbles numbered 1 to 42 and 36 blue marbles numbered 1 to 36. A marble is drawn at random from the jar. Find the probability of the given event. Please enter reduced fractions. (a) The marble is red. P(red)= Correct (b) The marble is odd-numbered. P(odd)= Correct (c) The marble is red or odd-numbered. P(red or odd) = Incorrect (d) The marble is blue or even-numbered. P(blue or even) =

Answers

Answer: See explanation

Step-by-step explanation:

Number of red marbles = 42

Number of blue marbles = 36

Total number of marbles = 42 + 36 = 78

There are 21 odd numbers between 1 - 42.

There are 18 odd numbers between 1 - 36.

(a) Probability that the marble is red will be:

P(red)= 42 / 78 = 7 / 13

(b) Probability that the marble is odd-numbered will be:

= 39 / 78 = 1/2

(c) Probability that the marble is red or odd-numbered will be:

P(red or odd) = P(red) + p(odd) - P(odd and red)

= (42/78) + (39/78) - (21/78)

= 60/78

= 10/13

(d) Probability that the marble is blue or even-numbered.

= P(blue) + P(even) - P(blue and even)

= 36/78 + 39/78 - 18/78

= 57/78

= 19/26

a fraction is shown 5/9 which number equivalent to the fraction

Answers

Answer:

10/18 or 25/45

Step-by-step explanation

What is the value of the expression below?

Answers

Answer:

-19

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define Expression

3² + (9 - 16)(4)

Step 2: Evaluate

Exponents:                              9 + (9 - 16)(4)(Parenthesis) Subtract:           9 + (-7)(4)Multiply:                                   9 - 28Subtract:                                  -19

Answer:

Step-by-step explanation:

BODMAS=bracket

O=of

D=division

M=multiplication

A=addition

S=subtraction

3*3=9

9+(9-16)(4)

9+(7)(4)

9-28

-19

write-2.16 as a fraction asap!!!!1m

Answers

Answer:

-2 wholes 4/25

Step-by-step explanation:

I used calculator. btw its -2 4/25

hope this helps! mark as brainliest!

Answer:

-2 4/25

Step-by-step explanation:

1. Sherrys age is nine less than six times Fred's age. Write an equation and find Sherrys age if Fred is ten years old.

2. A bicycle was originally priced at $102 and is on sale for 30% off. What is the discounted price?

Answers

Answer:

1. x= 10x6-9 Sherry is 51 apparently

2. $71.40

Step-by-step explanation:

Solve the equation.
–2x – 18 = 6
A. -12
B. -3
C. -2
D. 6

Answers

Answer:

-12

Step-by-step explanation:

Step 1: Add 18 to both sides.

−2x−18+18=6+18

−2x=24

Step 2: Divide both sides by -2.

−2x

−2

=

24

−2

x=-12

Answer:

-2x -18=6

+18. +18

-2x=24

÷-2. ÷-2

×= -12

13. A quadratic function passes through the points (0,5), (2,3), and (3,5). Which
function represents the same relationship?

A h(I) = x2 + 3x + 5

B h(x) = x2 – 3x + 5


C h(c) = -3x2++5

D h(c) = x2
= 2 + 5x - 3

Answers

Answer:

B

Step-by-step explanation:

Choose the graph below that correctly represents the equation 3x + 9y = −18. (5 points)

the line through the points negative 6 comma 0 and 0 comma 2
the line through the points negative 6 comma 0 and 0 comma negative 2
the line through the points negative 2 comma 0 and 0 comma 6
the line through the points negative 2 comma 0 and 0 comma negative 6

Answers

Answer:

the line through the points negative 6 comma 0 and 0 comma negative 2

Step-by-step explanation:

Rewrite the equation to something you are familiar with such as the slope intercept form; y = mx + b. This means you need to solve for y.

3x + 9y = -18 --- divide everything by 3.

x + 3y = -6

3y = -6 - x

y = -2 - 1/3x

your slope is -1/3 and your y intercept is - 2.

remember, y-intercept is when x = 0. therefore, when x = 0, y = -2.

write as an ordered pair (0, -2). the only option that has (0, -2) is the second one.

Therefore, the line through the points negative 6 comma 0 and 0 comma negative 2.

a contracter charges 1,200 for 1,100 square feet installed? It costs$ to have 1,100 feet

Answers

Answer:

$1,200

Step-by-step explanation:

A feather fell from a bird's nest in a tree from a height of 25 feet. The leaf fell at a speed of 3 feet per second. Choose all the equations below that correctly describes the relationship between t, the time in seconds, and h, the feathers height in feet?
A) h=25-3t
B) h=3t-25
C) h=-3t-25
D) h+3t=25

Answers

Answer:

A and C

Step-by-step explanation:

Other Questions
Seafoodgumbo,a traditional MardiGras dish, uses 12 cups of chicken broth for each 1 1/ 4 cups of flour. Mr. Clark used 8 3 /4 cups of flour for his gumbo.How many cups of chicken broth did he use? An automobile travels to the right, with the center Aof the wheel moving at a constant speed of 48 mi/h. If the diameter of a wheel is 22in.,determine the velocities of points B, C, D, and E on the rim of the wheelassuming there is no slipping. [Hint: at any given instant the velocity of point C, which is in contact with the ground must be zero]. Please introduce axes and give your answers in vector form. what does amiable mean Which diagram demonstrates the problem 3x 1/4 HELP MEEE PLEASE CORRECT PERSON GETS AWARDED Which equation has a graph that is a parabola with a vertex at (1,HI)?Oy=(-12+1O y--1-O y=(+ 1) +1O y=x+1)-1 someone has a heart tumor what do i do Write an equation of the line with a slope of 2/3and y-intercept of 8. y= The number of gallons of water in a tank, over a period of x hours is shown in the graph below. How many gallons of water will there be in 10 hours. which has the least result? A. 3/4-3/4 B. 3/4+3/4 C. -3/4 + 3/4 D. -3/4-3/4? What is the equation of the line that has a slope of -3 and passes through the point (-2, 4)?O y = -3x - 2y=-3xy=-3x - 4y = -3x + 4O y=-3x + 2 the passive transport of water molecules across a membrane is called ..... Jack earns $5 an hour delivering pizzas. He saved $300. He needs at least $1000 for a down payment for a car. Which equality best describes this situation, when n represents the number of hours he delivered pizza? Please select the word from the list that best fits the definition A phone call Raquel is at an arcade. She bought 8 tickets, and each game requires 2 tickets. -Write two equivalent expressions that gives the number of tickets Maddy has left in terms of x, the number of games she has already played. HELLLPPPP PLZ! Thank you! (5 screenshots included) PLEASE HURRY!!Look at the image below! 5,68080=WITH REMAINDERNO CALCULATOR IT WILL NOT WORK what dose the nucleus control All lights in the foodservice prep area should bea. Fluorescentb. A minimum pf 100 wattsc. A minimum 150 watts.d. Shatter-resistant