All Questions ⁺⁰238402 Questions

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heat engine

a heat engine operates between a hot reservoir at 444 C and a cold reservoir at 111 C. What is the maximum theroretical efficicney possible this engine?

A. 46%
B.75% read more ..

DamienDenninson Jun 6, 2016

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629

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+244

relativity

You walk 30 m due north and then turn and walk 40 m due east. (a) draw a picture, (b) Calculate the distance you are from the starting point and the angle that you make relative to east (worth 1 point)

DamienDenninson Jun 6, 2016

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647

1

I need to know how

How do you spell out

Guest Jun 6, 2016

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485

0

I need to know how

How do you spell out

Guest Jun 6, 2016

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408

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edasedfdsfasdf

Guest Jun 6, 2016

0

1628

3

+16

quadratic equation pls help!

2^(3x-2)-2^(3x-3)-2^(3x-4)-4=0

exora Jun 6, 2016

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920

1

what is 1/3x18

Guest Jun 6, 2016

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586

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-7(-5u - 4w + 2)

-7(-5u - 4w + 2)

Guest Jun 6, 2016

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781

3

Monarch Seeds

A group of students wants to help the monarch butterfly. The students are planting way stations in their neighborhoods. Each way station needs 10 plants, and only 65 percent of the seeds they plant are likely to sprout. If they want to make 15 way stations, read more ..

Guest Jun 6, 2016

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710

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A Thank You Note

I appreciate everyone here that has helped me and many others this year. I'm very grateful to have people that can guide me through many difficult math related questions and I can see the true dedication each person has made on this website. There read more ..

Guest Jun 6, 2016

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477

1

is this a real person wats ur name

Guest Jun 6, 2016

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911

3

Cos

What is cos of 234 degrees

Guest Jun 6, 2016

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694

2

help

how long will it take for the population of a certain country to triple if its annual growth rate is 3.9%?

Guest Jun 6, 2016

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524

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DddddxHi

Hi hi hi hih hijkdkdkddfjffnfjnf

Guest Jun 6, 2016

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669

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question about circles.

how do i find the radius of a circle from it's area?

Guest Jun 6, 2016

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437

2

PLEASE HELP!!!

how many jars are in your mums closet if the number of jars on earth is 1/3 the amount of jars in your mums closet? there are 9.999999*10^84 jars in the world.( ͡° ͜ʖ ͡°)

Guest Jun 6, 2016

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607

1

triangles

who do i find the area of a triangular prisim

Guest Jun 6, 2016

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512

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949.59 in standard form

949.59 in standard form

Guest Jun 6, 2016

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411

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Sinusoidal Function

y=Sin(x) X= 225 Degrees

Guest Jun 6, 2016

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453

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Confused...

5a feet+5a feet+5a feet+12a feet+15 feet+15 feet find the perimeter
I keep getting P=27a+30 but i am not sure if this i finished.

Guest Jun 6, 2016

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738

1

common denonomator

how do u find common denominator?

Guest Jun 6, 2016

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668

2

Help

how can i change decimal to fraction

Guest Jun 6, 2016

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651

1

Functions

how do I determine what kind of a function it is??????

Guest Jun 6, 2016

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