Chapter 4
Solve.
1. Two trains leave a station at the same time, heading in opposite directions.
One train is traveling at 80 km/h, the other at 90 km/h. How long will it
take for the trains to be 425 km apart?​

Answers

Answer 1

Answer:

8850

Step-by-step explanation:

coz the train goes too slowly and lazy

PLEASE MARK ME AS BRAINLIEST


Related Questions

(-82)+(-47)-(+33)do u all know this answer

Answers

Answer:

-157

Step-by-step explanation:

Answer:  -162

Hope this helps you

Step-by-step explanation:

subtract and add

Nancy has 192 golf balls.
How many dozen golf balls does she have?

Answers

Answer:

16

Step-by-step explanation:

192/12=16

hope this helps :3

if it did pls mark brainliest

Answer:16

192/12 equals 16

What is the difference between –12 and –5?

Answers

Answer:

-7

Step-by-step explanation:

(-12)-(-5)

negative and negative make a positive

-12+5

= -7

Answer:

-7

Step-by-step explanation:

Jayda bought a magazine that costs 6 and seven bags of marshmallows jayda spends a total of 34. How much did each bag of marshmallows costs ?

Answers

Answer:

4

Step-by-step explanation:

First, you need to take the cost of the magazine off the total which Jayda spent

34-6=28

Next, you know that you have seven bags of marshmallows, and the total cost of seven bags is 28. So, you need to divide 28 by the number of bags.

28÷7=4

Each bag of marshmallows costs 4

The triangular arrangement of numbers shown is known as Pascal's triangle. Use inductive reasoning to find the 6 missing numbers.

Answers

Answer:

1 5 10 10 5 1

Step-by-step explanation:

The complete question has been attached as an image.

Looking at the triangle, we see a pattern. The first level we have 1, in the next level we have 1 1, the next evel we have 1 2 1, the next level we have 1 3 3 1 and so on. From here, we see that to get the numbers of the next level, we have to write 1 as the first number, then add 1 to the next number after it in the previous level to get the second number in the next level then add the second number of the previous level to the next number beside it to get the third number in the next level and so on until you get to the last number before 1 in the previous level, add that number to 1 to get the second to the last number in the next level and finally put 1 as the last number in the next level. Now, we have

1 4 6 4 1

1 5 10 10 5 1

And that is the required set of numbers.

K^2+k=0 what does k=

Answers

Answer:

k = K^2

Step-by-step explanation:

Subtract  K^2 from both sides of the equation.

a positive real number is 2 more than another. if the sum of the squares of the two numbers is 14, find the numbers​

Answers

9514 1404 393

Answer:

√6 -1 ≈ 1.44949√6 +1 ≈ 3.44949

Step-by-step explanation:

Let x represent the smaller number. Then the sum of squares is ...

  x² +(x+2)² = 14

  2x² +4x +4 = 14 . . . eliminate parentheses

  2x² +4x -10 = 0 . . . put in standard form

  x² +2x -5 = 0 . . . . . divide by 2 (because we can)

  (x +1)² -6 = 0 . . . . . complete the square

  x +1 = √6  . . .   we want the positive root

  x = -1 +√6

  x+2 = 1 +√6

The numbers are √6±1.

Can you guys help me find the supplements for question 6

Answers

Answer:

d

Step-by-step explanation:

i looked it up

the other one is 27​

Answers

Answer:

the scale factor is 9 and x = 58.5

Step-by-step explanation:

to get the scale factor just do DE/AB so 27/3

GIVING 30 POINTS

need it RN


Which equation represents a line which is perpendicular to the line
5x + 4y = -24?

Answers

5x +4y=24 I believe would be the answer
M^perpendicular = -4/5

Please help with this problem thank you.
-8 + n = 62 What is n?

Answers

Answer:

n = 70

Step-by-step explanation:

-8 + n = 62

      n = 70

0.079times what equals 7.9

Answers

Answer:

100

Step-by-step explanation:

A human gene carries a certain disease from the mother to the child with a probability rate of 39%. That is, there is a 39% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has four children. Assume that the infections of the four children are independent of one another. Find the probability that all four of the children get the disease from their mother. Round to the nearest thousandth.

Answers

Answer:

[tex]Probability = 0.023[/tex]

Step-by-step explanation:

Given

Represent the given probability with P(Gene)

[tex]P(Gene) = 39\%[/tex]

[tex]Children = 4[/tex]

Since all 4 children get the disease, the required probability is calculated as thus:

[tex]Probability = P(Gene)^4[/tex]

[tex]Probability = 39\%^4[/tex]

Convert % to decimal

[tex]Probability = 0.39^4[/tex]

[tex]Probability = 0.02313441[/tex]

[tex]Probability = 0.023[/tex] Approximated

A machine is used to fill 1-liter bottles of a type of soft drink. We can assume that the output of the machine approximately follows a normal distribution with a mean of 1.0 liter and a standard deviation of .01 liter. The firm uses means of samples of 25 observations to monitor the output, answer the following questions: Determine the upper limit of the control chart such that it will include roughly 97 percent of the sample means when the process is in control

Answers

Answer:

1.00434

Step-by-step explanation:

Given the following :

Given a normal distribution ;

Mean (m) = 1.0 liter

Standard deviation (σ) = 0.01 liter

Sample size (n) = 25

For 97% sample means (sm) = 0.97

Z = (m - sm) / s

Zcrit = 1 - (100% - 97%)/2

Zcrit = 1 - (0.03/2)

Zcrit = 1 - 0.015 = 0.985

The z score which corresponds to 0.985 = 2.17

Upper limit : m + z*(σ/√n)

Upper limit : 1.0 + 2.17*(0.01/√25)

Upper limit : 1. 0 + 2.17*(0.01/5)

= 1.0 + 2.17*0.002

= 1.0 + 0.00434

= 1.00434

what is the slope of the line that passes through (37, -9) and (36, 81)

Answers

Answer:

m= -90 is your answer

Step-by-step explanation:

For future reference, you should try using Symbolab, it works really well and I use it ALL the time!

Participants in a psychology expirement

were able to memorize an average of M Words in

T minutes, where M is -0.00lt3 and T is 0.1t2 Find the

average

number of words memorized in 10min.

Answers

Answer:

11 words

Step-by-step explanation:

The question is poorly formatted.

The right relationship between M and t is given as:

M = −0.001t³ + 0.1t²

Required

Solve for M when t = 10

To do this, substitute 10 for t

So,we have:

M = −0.001t³ + 0.1t²

M = -0.001 * 10³ + 0.1 * 10²

M = -0.001 * 1000 + 0.1 *100

M = 1 + 10

M = 11

11 words in 10 minutes

Hi i need help on letters:

L,A,E,R,T,C,I,S,F,G,H,D,N,and O

Im giving 14 points if u answer all of them!!;)

Answers

Answer:

Step-by-step explanation:

E = 10:15 C = 4:5 F = 1:10 D = 1:2 R = 1:3 I = 30: 80 G = 16:48  N = 20: 40

A = 2:1 T = 6:10 S= 9:12 H = 9 O = 1: 11

(wouldve explained them but im in class :)

3/4of 16/27/23/14+12/18 using bodmas rule

Answers

Your answer :------

3/4 of 16/27+23/14+12/18
=4/9+23/14+12/18
= (56+207+84)/126
= 347/126 = 2.75 approx ans.

If it helps you mark me as brainlist

Thanks

in an experiment, the control variable is d and the response variable is e. which variable is not manipulated, but measured, and represents the data being recorded?

Answers

The control variable is used as a “normal” the response variable is the one being measured and/or recorded

8(3x-2)-8x=9(2x-6) find x

Answers

if i’m solving it correctly x = 4

Answer:

x=19

Step-by-step explanation:

8(3x-2)-8x=9(2x-6) Distribute.

24x-16-8x=18x-54   Combine like terms.

16x-16=18x-54         Subtract 16x from both sides (getting rid of a variable first  

-16x     -16x               is easier).

-16=2x-54                 Add 54 to both sides.

+54    +54

38=2x                       Divide both sides by 2.

/2   /2

19=x

Hope this helps!! Have a great day ^^

Unit 4: Lesson 9: Parallel and Perpendicular Lines Unit Test Parallel and Perpendicular Lines does anyone have the answers for this 13 question test ??

Answers

What test is this question from?

Answer:

I need these answers and the ones he put in in the comments are all wrong

What is the length of a segment with endpoints at F(6, 4) and G(14, 19)? Round to the nearest whole number.

Answers

Answer:

17

Step-by-step explanation:

d = √( (x₂ - x₁)² + (y₂ - y₁)² )

   = √( (14 - 6)² + (19 - 4)² )

   = √( 8² + 15² )

   = √( 64 + 225 )

   =  [tex]\sqrt{289}[/tex]

   = 17

Can someone please help me with this, I will mark you as brainliest

Answers

Answer:

1st answer is 1/2x^5

2nd answer is m^3/16p^2q^2

3rd answer is 2r^4+9r^3

Helpppppp ASAP!!!!!!!

Answers

Answer: No solution.

Answer:

x=2

Step-by-step explanation:

What is the length of LA?

Answers

The length of LA in the triangle will be 8.

How to calculate the triangle?

From the information given, it was stated that both the triangles are similar.

In this situation, the length of LA will be:

= (12 × 4)/6

= 48/6

= 8

Therefore, the length of LA in the triangle will be 8.

Learn more about triangles on:

brainly.com/question/17335144

#SPJ6

.What is 20/24(twenty-twenty fourths) to its most simplified form?

Answers

5/6 as in five sixths hope this helps!

PLEASE PLEASE HELP ME I WILL GIVE BRAINLIEST

options box one:
graph a
Graph B

Options for box two:
1. appears to decrease more
2. Is less
3. Decreases less
4. Appears to decrease less
5. Decreases more

Answers

Answer:

1) graph b

2)appears to decrease more

Step-by-step explanation:

Translate the given phrase into an algebraic expression and simplify if possible: the product of −4 and 16

Answers

Answer: -4 x 16, -48

Step-by-step explanation:

word phrase: -4 x 16

symplified = -48

product means multiply

A robot can complete 7 tasks in 2/3 hour. Each task takes the same amount of time. How long does it take the robot to complete one task? How many tasks can the robot complete in one hour?

Answers

Answer:

a. is 2/21 hours to complete one task

b. is 10 1/2 tasks in one hour

Robot takes 2/21 hour to complete the task.

In one hour, robot complete 21/2 task.

What is ratio?

Ratio basically compares quantities, that means it show value of one quantity with respect to other quantity.

If a and b are two values, their ratio will be a:b,

Given that,

Time taken to complete 7 tasks = 2/3 hours.

To find the time taken to complete one task and tasks that completed in one hour,

Use ratio method,

7 tasks take = 2/3 hours

1 task takes = 2/(3 x 7) = 2 / 21 hours.

In 2/3 hours = 7 tasks completed,

1 hour = 21/2 tasks.

In one hour, 21/2 tasks can be completed.

To know more about Ratio on:

https://brainly.com/question/23724140

#SPJ5

Lisa,Amy and Pete decided to race up the stairs that has 24 steps.Lisa takes 2 steps Every Second,Amy takes 3 steps every second. If pete starts at the bottom,what should lisa and amy start on so that all three finish in a tie? please help with strategy.

Answers

Answer:

How many steps does pete take every second? one?if so, lisa and amy wouldn't start on steps, they would start further back

Other Questions
Where is the Arabian Sea located on the map above?A.Letter AB.Letter BC.Letter CD.Letter D Music is used by many people to define who they are.Question 1 options: True FalseQuestion 2 Music is not an important part of culture.Question 2 options: True FalseQuestion 4 In a nutshell, what does it mean that music is a universal language? Everyone likes the same type of music.All cultures use music in important ways.All culture's music sounds the same. All music is sung in the same language.Question 5 Singing is an important part of learning language.Question 5 options: True False Where is the location of the department of homeland security major units in the USA? The lines below are perpendicular . If the slope of the green line is 3/2 , what is the slope of the red line? What does this event symbolize call of the wild Read the selection from the first paragraph of thearticle.For centuries, Europeans explored the world by sea. They had few maps and their navigating equipment was poor.Progress was slow.Which sentence uses the word "poor" in the sameway as it is used above?A.Many people were poor and had little moneyduring the Great DepressionB."You look like you don't feel well, you poorchild," said the doctorC.He had a difficult time completing the paintingbecause his paintbrushes were poor.D.The desert is a region that is poor in theamount of rainfall it receives. The mean and standard deviation of a random sample of n measurements are equal to and , respectively. a. Find a % confidence interval for if n. b. Find a % confidence interval for if n. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? Why do we study?give me reason Does someone know how to find the area of this? What is the name of the colony thatmany Carolinians came from? Jamestowns House of BurgessesA: was an assembly appointed by King James I.B: was an assembly of elected representatives.C: was built by the Virginia Company.D: was home to the colonys first royal governor. if u trust urself do it! (not sponsored by nike)Which is one factor that contributes to the formation of polar, temperate, and tropical zones?the angle of the Suns raysthe direction of seasonal windsthe presence of prevailing windsthe movement of wind near a mountain The Lausanne Congress on World Evangelization brought together participants from over _____ nations. How did the survivors of the Middle Passage ma[ke] the new land their own?Answer What is the value , if any . Of philosophy in our daily lives? What does it mean to be brave? What motivates people to be brave? How did Daz finally confront his fears, and what was the result? Do you think Daz acted bravely? Why? Which statement best explains the Three-Fifths Compromise? Question 2 (1 point)Explain how you used the distribute property to find an equivalent expression for4 (3+x)ANYONE ITS WORTH 10 POINTS PLEASE??? What value of a will make the following equation true? Please help with this easy fraction problem