Two trains leave the station at the same time, one traveling due east, the other due west. After 46 minutes, they are 140 miles apart. If one train's speed is 20 mph more than the other train's, what are the speeds of the two trains.

Answers

Answer 1

Train A speed = x + 20

Train B = x

We know that 46 minutes is 23/30 of an hour.

Use D = rt

Take it from here.


Related Questions

please help i have to get this all done by tommorw

Answers

the equation is already in slope intercept form. the line is solid. shaded direction is under the line.

A parachutist's rate during a free fall reaches kilometers per hour. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during seconds of free fall? Do not round your answers.

Answers

Complete question :

A parachutist's speed during a free fall reaches 162 kilometers per hour. What is this speed in meters per second? At this speed, how many meters will the parachutist fall during 20 seconds of free fall? Do not round your answers.

Answer:

45 m/s ; 900 meters

Step-by-step explanation:

Given that :

Speed = 162 kilometers per hour ;

The speed in meters per second can be found by:

162 km/hr = (162 * 1000)m / (60 * 60) second

162 km/hr = 162000m / 3600 s

162 km/hr = 45 m/s

At this speed, how many meters will the parachutist fall during 20 seconds of free fall?

Speed of free fall = 45m /s

Distance in meters after 20 seconds :

(45 m/s * 20s) = 900 meters

If 20miles is 1/2 inches how and there is 3.125 inches how many miles

Answers

Answer:

3.125 inches would result in 122 miles.

Step-by-step explanation:

We can figure this out using proportions.

[tex] \frac{20 \: miles}{ \frac{1}{2} \: inches} = \frac{x}{3.125 \: inches} \\ \\ \frac{ \frac{1}{2}x }{ \frac{1}{2} } = \frac{62.5}{ \frac{1}{2} } \\ \\ x = 122[/tex]

122 miles would be the answer.

Answer:

125 miles

Step-by-step explanation:

[tex]\frac{20}{\frac{1}{2}}=\frac{x}{3.125}\\x=40 \times 3.125=125 \\x=125~miles[/tex]

PLEASE HELP IM SO STRESSED RN HDHHSH

Answers

Answer:

If we want to cover the base of the prism having dimensions 2 cm × 1 cm with cm length of cube, then there will be (4 × 2) = 8 cubes that can occupy the base.

Step-by-step explanation:

please help due in 2 min will give max points

Answers

Answer:

x = 4

Step-by-step explanation:

(7x - 2) + (3x + 9) = 10x + 7

(10x + 7) + (8x - 6) = 18x + 1

18x + 1 = 73

18x = 72

72/18 = x

x = 4

Heather paid $2,022.30 for a computer. If the price paid includes a 7% sales tax, which of the following equations can be used to determine the price of the computer after tax? (Let x represent the cost of the computer and y represent the total cost after tax.)

Answers

Answer:

The equation should be  

2,022.30 x .07= x

X+2022.30= final sale price

Step-by-step explanation:

Choose the correct preposition to complete the sentence. To facilitate a quick getaway, the cunning thief parked the car perpendicular the building.

Answers

Answer:

The answer is TO

Step-by-step explanation:

Answer:

C. To

Step-by-step explanation:

edg 2020

Which of the following functions best describes this graph?
A. y = (x-1)(x+3)
B. y =x^2-x+5
C. y = (x+1)(x+1)
D. y=x^2-5x+6​

Answers

answer is C 【y=(x-1)(x+1)】

Decide if the expressions in each pair are equivalent. Explain how you know.
x + x + x + x and 4x


5x and x + 5

Answers

Answer:

20x²+5x+5

Step-by-step explanation:

any more help just ask

The first expression is true because x+x+x+x= 4x. It is like addition but with a variable. The second isn’t true because 5x= x+x+x+x+x whereas x+5 is x plus five. Not 5x. Hope this helps.

HELP ASAPP PLEASE OR ELSE I WILL FAIL CLASS

Answers

7 +5x= -18
5x= -25
X= -5
B) one solution
C) i think it is : ( 14 + 10(-5))/ 12 = -36/ 12= -3

Write an equation of a line parallel to this line:
y - 1 = -3(x + 4)

Answers

Answer:

Step-by-step explanation:

y-1 =-3x-12

Equation of a line is y=mx+c

y=-3x-12 +1

y= -3x -11

parallel lines men you can use the same gradient so e,g y=-3x+12

in standard form is 63,029

Answers

60,000 + 3,000 + 20 + 9

Answer:

60000 + 3000 + 29

Step-by-step explanation:

The Standard form of 63029 is

60000 + 3000 + 29

-TheUnknownScientist

Sophia scored 92% in a math test. If the test had 50 questions, how many did she get right? *

Answers

Answer:

46 questions correct

Step-by-step explanation:

100% = 50 questions2% = 1 question92% = 46 questions

what is the derivative of ( 2w^2+1 ) ?

Answers

If you know about the power rule,

d/dw (2w² + 1) = 2 d/dw (w²) = 2 • 2w = 4w

If you have to use the limit definition of the derivative, let f(w) = 2w² + 1. Then

[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{f(w+h)-f(w)}h[/tex]

[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{(2(w+h)^2+1)-(2w^2+1)}h[/tex]

[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{2(w^2+2wh+h^2)-2w^2}h[/tex]

[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{4wh+2h^2}h[/tex]

[tex]f'(w)=\displaystyle\lim_{h\to0}(4w+2h)=\boxed{4w}[/tex]

Which of the two elements below have similar properties?
Chlorine (CI) and Zinc (Zn)
Sodium (Na) and Fluorine (F)
Potassium (K) and Francium (Fr)
Magnesium (Mg) and Helium (He)

Answers

Answer:

C

Step-by-step explanation:

A 32-ounce package of a snack mix is 24 percent pretzels. How many ounces are pretzels?
0.706 ounces
0.768 ounces
7.06 ounces
7.68 ounces

Answers

Answer:

the correct answer is choice D. if 24 precent of the snack mix is pretzels we simply need to multiply the total number of ounces by 0.24 7.68 ounces of the snack mix will be pretzels

Answer:
D. 7.68 ounces

Explanation:
What we know:
- the snack mix is 32 ounces
- 24% of the snack mix is pretzels

To find the ounces of pretzels, find 24% of 32 ounces by multiplying them.

24% = 0.24 as a decimal
0.24*32=7.68
Therefore, 7.68 ounces are pretzels.

I hope this helps!

Find the cost price of the following
Selling price: 55$, Profit 10%​

Answers

Step-by-step explanation:

If cost price = A $

110/100 × A = 55

A = 55 × 100/110

= 50 $

Cost price 50 $

A large bucket holds 5 gallons of water, which is about the same as 19 liters of water. A small bucket holds 2 gallons of water. About how many liters does it hold? Show all of your work.

Answers

Answer: It will hold 7.6 Litres

Step-by-step explanation:

Step 1

We know that Converting Gallons to Litres, we have that

I gallon = 3.78541

So from the question

A large bucket = 5gallons  which in Litres became

5 x 3.78541=18.927 rounded up to 19litres.

-- Also IF 5 Gallons = 19 Litres

Then 1 Gallon = 19/5= 3.8 Litres

Step 2

IF  large bucket of 5 gallons = 19 Litres ,

A small bucket of  2 gallons of water = 2 x 19/5= 38/5 =7.6 Litres

Hurryyyyy I’m giving brainliest

Solve for w.
16 = W/2

Answers

Answer:

W=32

Step-by-step explanation:

16x2=32

32/2=16

8. 3x+10=14y
8х -7y= 34

Answers

Answer:

hey, are these two questions or one simultaneous question?

Please help me! Brainliest + 15 pts!

A piano tuner charges $63 for 1.5 hours of work. Which proportion can be used to find x, the number of dollars the Piano tuner charges for 4 hours of work?

A: x/4 = 1.5/63

B: x/63 = 3.5/2.5

C: x/63 = 1.5/4

D: x/4 = 63/1.5

Please answer correctly and thanks! :)

Answers

Answer:

I think it is D , but if it not plz forgive me

Answer:

d

Step-by-step explanation:

cotA . cos(30°-A) - sin ( 30°- A) = ✓3÷2​

Answers

Answer:

cotA. cos(30° - A) - sin(30° - A) = √3/2

Step-by-step explanation:

what is the numbers in PI {pi} im confused is it 3.4578949 or is it 3.5478749?

Answers

Answer:

just use the pie sign in your calculator

pi = 3.1415926535898

This is something you either memorize, have on a flashcard, or just let your calculator handle the details. The digits of pi are effectively random and do not repeat with a known pattern.

WILL GIVE BRAINLIEST IF IT IS RIGHT AND EXPLAINED

Answers

Answer: x=36 degrees

Step-by-step explanation:

Angle EAF and FAB must equal 180 degrees together as all straight lines do. 36 times 3= 108 degrees so 3x=108 degrees. 36 times 2= 72 degrees so 2x=72 degrees. Therefore, 3x+2x=180 degrees.

Hello! Can someone please help me with these 2 questions! thank you so much! (i’ll give brainlist)

Answers

Answer:

1) 4    2)1/5   X=10

Step-by-step explanation:

Small to large is a fraction

Large to small is a whole number

*
What is the slope of the equation 2x - 5y = 20?

Answers

Answer:

Dividing two negative values results in a positive value. Reorder −4 - 4 and 2x5 2 x 5 . Rewrite in slope-intercept form. Using the slope-intercept form, the slope is 25 .

The other person above is correct

Cassie needs at least $140 to buy a graphing calculator for math class. Currently she has $30 saved and her neighbor tells her she can babysit and earn $10 an hour. What is the minimum number of hours Cassie will need to babysit in order to have enough money to buy the calculator?

The equation needs to have a inequality not a equal sign with work. Please help

Answers

Answer:

11

Step-by-step explanation:

140 - 30 =110

110 ÷ 10 = 11

answer is 11 hours

11 is the answer hope this helps

Complete the explanation of how an estimate helps you to place the decimal point when multiplying 1.8 × 5.4.

Answers

Wherever the place is on the problem is where you put it in the solution, therefore the answer is 9.72 . hopefully this h be

Prove that 3+2 root 3 is irrational

Answers

Answer:

Hi friend,

Let 3+2√3 is a rational number.

A rational number can be written in the form of p/q.

3+2√3=p/q

√3=p/2q-3

√3=p-6q/2q

p,q are integers then (p-6q)/2q is a rational number.

But this contradicts the fact that √3 is an irrational number.

So,our statement supposed is false.

Therefore,3+2√3 is an irrational number.

Step-by-step explanation:

Answer:

in the explanation

Step-by-step explanation:

The sqrt of 3 is irrational. Any rational number multiplied or divided with an irrational number is also irrational (2 root 3). It's the same for addition and subtraction, any rational number added or subtracted from an irrational number is also irrational (2 + root 2).

Hope this helps!

At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equation below, where t represents the number of years since the end of 2006 and P represents the number of people. Based on this model, approximately what was the increase in the population of Riverside at the end of 2009 compared to the end of 2006?

Answers

The correct format of the question is

At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equation below, where t represents the number of years since the end of 2006 and P represents the number of people. [tex]P = 400 ( 1.2 )^ t[/tex] Based on this model, approximately what was the increase in the population of Riverside at the end of 2009 compared to the end of 2006?

(A) 291

(B) 691

(C) 1040

(D) 1440

Answer:

The increase in the population at the end of 2009 is 291 people

Step-by-step explanation:

We are given the equation as [tex]P = 400 ( 1.2 )^ t[/tex]

where

P = No of People

t= No of Years

it is given that in the year 2006 the population is 400

this will only happen when we take t= 0

so for

Year    value of t

2006-    t = 0

2007-    t  = 1

2008-    t = 2

2009     t = 3

No of people in 2009 will be

[tex]P = 400(1.2)^3[/tex]

     = 400*1.728

   P  = 691.2

Since the equation represents no of people so it can't be in decimals, Therefore the population will be 691

Increase = P(2009) - P(2006)

               = 691 - 400

                = 291

The increase in the population at the end of 2009 is 291 people.

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