Justin and Ari go on a 30 km run. They usually run together at a speed of 10 km/h. If they start together but Justin runs at 12 his usual speed and Ari runs at 112 times her usual speed, how many hours after Ari finishes will Justin finish?

Answers

Answer 1

Answer:

4 hours

Step-by-step explanation:

Distance covered = 30 km

Usual Speed of both = 10km/hr

Justin's speed = 1/2 * 10 = 5km/hr

Ari's speed = 3/2 * 10 = 15 km/hr

Time taken = distance / speed

Justin's time = 30 / 5 = 6 hours

Ari's time = 30 / 15 = 2 hours

Time difference = (6 - 2) = 4 hours


Related Questions

Which of the following is an equation of a line parallel to the equation y = 1x +1? 2 O A. y = -2x-5 O B. y = 2x-5 2. C. y=-1X-5 C. y=- O D. y = 12 x - 5​

Answers

Answer:  B. y = 2x-5  is your answer hope this helped

plz make brainly

Step-by-step explanation:

help me with this i only have 10 mis left

Answers

Answer:

It's definitely C

Step-by-step explanation:

Boston is 35 degrees as well but the lowest temperature of Seattle is 45

What is the volume of this rectangular prism below?




The volume of this rectangular prism is [a] cubic centimeters.


______________

Answers

Answer:

225 cm³

Step-by-step explanation:

Volume of a prism = base area × height

The volume of this prism

[tex] = 5 \times 5 \times 9[/tex]

[tex] = 225[/tex]

Answer:

225 cu cm ^3

Step-by-step explanation:

can i be brainliest?

the solution set of 4x-(x+7)=2(x+3)​

Answers

Step-by-step explanation:

To Solve:-

[tex]\\ \tt{:}\leadsto 4x-(x+7)=2(x+3)[/tex]

SOLUTION:-

[tex]\\ \tt{:}\leadsto 4x-(x+7)=2(x+3)[/tex]

[tex]\\ \tt{:}\leadsto 4x-x-7=2x+6[/tex]

[tex]\\ \tt{:}\leadsto 3x-7=2x+6[/tex]

[tex]\\ \tt{:}\leadsto 3x-2x=6+7[/tex]

[tex]\\ \tt{:}\leadsto x=13[/tex]

25 POINTS!!!!! REAL ANSWERS ONLY!!!!!!!! I WILL REPORT LINKS AND FAKE/WRONG ANSWERS!!!!!!!​

Answers

Answer:

7.

lateral surface area of traingular prism=perimeter of traingle ×length=[5+3+4]×6=72cm²

curved surface area=2[area oftraingle]=2×1/2×4×3

=12cm²

now

total surface area=72cm²+12cm²=84cm²

8.

volume of traingular prism=area of traingle ×length

=1/2×12×3.4×4=81.6cm³

find the surface area of the cylinder in terms of pi. a.350pi cm b.896pi cm c.602pi cm d.644pi cm

Answers

Answer:

the surface area of the cylinder in terms of pi=2πrh+2πr² =2×π×7×18+2π×7²=350πwhere

r=radius=7cm

h=height of the cylinder.=18cm

a.350πcm² is your answer

Hola q tal.............................​

Answers

Answer

tan linda <3 aww

Step-by-step explanation:

Answer:

ya la toque, que procede? JAJAJA

Step-by-step explanation:

hola, cómo anda

Is the following number rational or irrational? sqrt(50) Choose 1 answer ?

Answers

Answer:

its irrational

7.07106781187

look at how the decimals are all over the place

if it was rational it would've been something like this

7.070707070707 or 7.071071071071

hope that answers your question

Step-by-step explanation:

Which solid figure has the following net?

square prism
square pyramid
triangular pyramid
triangular prism

QUICK PLS!!

Answers

The answer is Square pyramid

Answer:

square pyramid

Step-by-step explanation:

To save money for college, Manny puts $800 in his savings account for 18 years. During that time, it pays 6.75% simple Interest. How much money does Manny make in 18 years?
Find the principal, rate, time. Using the information, find the Simple Interest

Answers

Answer:

$972 interest made

Step-by-step explanation:

p x ir x t =interest

800x.0675x18=972

Mathematics Mathematics, 29.12.2020 18:30, lame3245 a grandfather is nine times older than his granddaughter. In 8 years the grandfather will be five times older than his granddaughter how old is each of them now?

Answers

Answer:

Granddaughter = 8

Grandfather = 72

Step-by-step explanation:

Let :

Granddaughter's age = x

Grandfather's age = y

y = 9x

Age in 8 years :

Granddaughter's age = x + 8

Grandfather's age :

y + 8 = 5(x + 8)

y = 9x

Then ;

9x + 8 = 5(x + 8)

9x + 8 = 5x + 40

9x - 5x = 40 - 8

4x = 32

x = 32 / 4

x = 8

y = 9x = 9*8 = 72

Brianna can text 75 words in 10 minutes. At this rate, how many words could she text in 8 minutes?

Answers

Answer:

60 words

Step-by-step explanation:

75/10 = 7.5 words per minute

7.5 * 8 = 60 words

60 words in 8 minutes simply divide then multiply

(3,5) and (9,10) find the slope that passes through the given points

Answers

Answer:

5/6

Step-by-step explanation:

slope = (difference in y)/(difference in x)

slope = (10 - 5)/(9 - 3) = 5/6

Answer: 5/6

Answer:

Hi! The answer to your question is [tex]m=5/6[/tex]

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☁Brainliest is greatly appreciated!☁

Hope this helps!!

- Brooklynn Deka

Consider the means of the samples shown in the table. Which value is least likely to be the mean of the population from which the samples were taken?

Sample Sample Mean
1 15.2
2 17.1
3 16.9
4 12.2
5 18.0
6 16.3
7 17.4

12.2
15.3
16.4
17.5

Answers

Answer:

the answer is 12.2 :)

Step-by-step explanation:

1
What is the radius of a circle with circumference 17 mm? Round to the nearest tenth. Use 3.14 for TT.

Answers

Answer: 2.7mm

Step-by-step explanation:

The formula for the circumference of a circle is given as 2πr. In thkw case, thw circumference is 17mm.

Therefore, 2πr = 17

2 × 3.14 × r = 17

6.28r = 17

r = 17/6.28

r = 2.7mm

Therefore the radius of the circle is 2.7mm

look at the screenshot.

Answers

Answer:

25

Step-by-step explanation:

ok. ...jsjsjsjsjsjankaOOoOoakjzjkzkzkzkzkz

Answer:

30 / 5 x 2 - 2 = 10

Step-by-step explanation:

A, B, C, D, E and F are points on a circle. put crosses on the ends of the line that is a diameter of the circle

Answers

9514 1404 393

Answer:

  AD is the diameter

Step-by-step explanation:

Angles in a triangle have a sum of 180°, so inscribed angle B is 80° and inscribed angle E is 90°.

An inscribed angle subtends an arc that is twice its measure, so arcs ABD and AED are both 180°. That makes chord AD a diameter.

Points A and D need your cross markings. AD is a diameter of the circle.

If a=0.3 and b =0.5, what is the value of a+b?

A .8/10
B. 8/9
C.80/99
D. 88/100

Answers

Answer:

it's the 1st one .......

Describe the possible correlations between the variables in a scatter plot. Select all that apply.

A. none
B. perfect
C. scattered
D. strong
E. weak

Answers

Answer:

Step-by-step explanation:

i need to see diagrams to help with this question

if a:b:c is equal to 5:2:3. what is a-2b:3b-c please it is assigment​

Answers

Answer:

1:3

Step-by-step explanation:

a:b:c

5:2:3

a-2b:3b-c

5-2.2:3.2-3

5-4:6-3

1:3

Write the slope-intercept form of the line of the equation below.

5x+6y=−18

Answers

Y=mx+ b and turn the equatin to that form is gonna be gimme a minute ima solve it on paper rq i promise ill answer


Madison earned $80 last month pet sitting in her
neighborhood. She spent $54 and put the remainder of the
money in her piggy bank. What percent of her allowance did
Madison put in her piggy bank?

Answers

Answer:

32.5%

Step-by-step explanation:

80 - 54 =  $26 in the piggy bank

80/100% = 26/x%

x = 32.5%

The money put in the piggy bank in percent is 32.25%.

What is percentage?

A percentage is a value that indicates 100th part of any quantity.

A percentage can be converted into a fraction or a decimal by dividing it by 100.

The given problem can be solved as follows,

The remaining money put in piggy bank is $80 -$54 = $26

In order to calculate the percentage, take the ratio of the remaining money to the total earning as follows,

Percent of money in piggy bank = 26/80 × 100

                                                      = 26 × 5/4

                                                      = 32.25%

Hence, the percentage of money put in piggy bank by Madison is 32.25%.

To know more about percentage click on,

brainly.com/question/29306119

#SPJ2

Below is the number of years that each of the nine Omar's Omelette Operation locations have been open.
\begin{aligned} &5.2, 7.0, 10.5, 2.6, 2.9, \\ &4.5, 1.0, 1.5, 2.6 \end{aligned}


5.2,7.0,10.5,2.6,2.9,
4.5,1.0,1.5,2.6


Using the data, create a histogram. i Got no clue

Answers

Answer:

Step-by-step explanation:

hope this helps!

As the answer is an histogram, you can see it in the image added.

What is histogram?

A histogram is an approximate representation of the distribution of numerical data. A histogram is a graph that shows the frequency of numerical data using rectangles. The height of a rectangle (the vertical axis) represents the distribution frequency of a variable (the amount, or how often that variable appears).

here, we have,

An histogram is a graphical representation of data vs frequency.

On the x-axis we have de data. In this case the data are the number of hours that Trey worked during each of his eight shifts last pay period, 2.0,1.8, 4.6,1.1, 7.5,1.5,4.0,1.8. We need this data in order, so:

1.1

1.5

1.8

1.8

2.0

4.0

4.6

7.5

The data 1.8 is the only one that happened 2 times during his eight shifts.

So the frequency is 2. The frecuency of the other shifts is 1.

Now we have the elements to create the histogram.

On the x-axis we place the different hours of the shifts.

On the y-axis we place the frequency each hour occurred during the last pay period.

y(Frequency)

3|

2|

1|

--------------------------------------------------------------------------------> x (Hours)

    1.1    1.5   1.8    2.0 4.0 4.6                  7.5  

The histogram is added below.

To learn more on histogram click:

brainly.com/question/17145899

#SPJ3

Complete question:

Below is the number of hours that Trey worked during each of his eight shifts last pay period. \begin{aligned} &2.0, 1.8, 4.6, 1.1, \\ &7.5, 1.5, 4.0, 1.8 \end{aligned} ​ 2.0,1.8,4.6,1.1, 7.5,1.5,4.0,1.8 ​ Using the data, create a histogram..

Help me with this and I’ll give 5 stars!

Answers

Answer:

both are 32 degrees

Step-by-step explanation:

90-32 = a = 58

180-58 = b = 32

Acellus
D
13
5
A
B
С
CD = [?]
Enter the number that belongs in
the green box.
Enter
Copyright © 2003 - 2021 Acellus Corporation. All Rights Reserved.

Answers

Answer:

[tex]CD = 13[/tex]

Step-by-step explanation:

Given

The attached triangle

Required

Find [tex]CD[/tex]

From the question, we have:

[tex]\angle CDB = \angle ADB[/tex]

[tex]\angle ABD = \angle CBD[/tex]

Base on AAS theorem;

[tex]CD = AD[/tex]

Hence:

[tex]CD = 13[/tex]

En un parc que ocupa una superfície rectangular s'han construït un camí que el travessa en diagonal. Si les dimensions del parc son 3 km i 1,5 km, quina longitud té el camí?

Answers

Could you translate it to English in the comments so I could better understand what your asking :)

Help please.........

Answers

Answer:

y = 4.5 x

Step-by-step explanation:

The answer should be y=4.5x
Hope that helps!!
Please
Consider brainliest!!<3
Have a good day!!

Plz help me give Brinleylist or whatever it’s called.

Answers

Answer:

Carly didn't make a mistake

Step-by-step explanation:

24 / (4 x 2 - 5)

PEMDAS

P: Parenthesis = (4 x 2 - 5)

E: Exponents: None

M: Multiplication = (4 x 2 - 5) = (8 - 5)

D: Division = Not yet, because the Parenthesis is not done.

A: Adding = None

S: Subtracting = (8 - 5) = 3

Divide = 24/3 = 8

Look at this shape: which image shows a rotation? I DO NOT WANT A LINK I WANT A REAL ANSWER!!!!!!!

Answers

Answer:

I think it's A. I'm not 100% sure but I'm pretty sure

What are the solutions of the equation 12 + 15 - 79?

Answers

The answer is negative 52
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