Wednesday

July 23, 2014

July 23, 2014

Total # Posts: 14

**Math**

The passenger section of a train has width 2x-7, length 2x+3 and height x-2 with all dimensions in metres. Solve a polynomial equation to determine the dimensions of the section of the train if the volume is 117 m^3

**Math**

An equilateral triangle is inscribed in a circle. Each side of the triangle has length x. What is the area of the circle? Please help

**Math**

An equilateral triangle and a regular hexagon have equal perimeters. What is the area of the triangle, if the area of the hexagon is 120? I don't get it

** Help math**

The length of a certain rectangle is quadrupled and the width is tripled. What is the ratio of the area of the new enlarged rectangle to the original rectangle?

**Physical science**

a 5.0 x 10^1g piece of a metal in thermal equilibrium with boiling water is removed and placed in 1.0 x 10^2g of a cooling water bath (specific heat= 1.00cal/g degrees celsius at 20.0 degrees Celsius . The final temperature of metal and the water bath is 28.0 degrees celsius W...

**Physical Science **

A 250.0 kg roller coaster has 2.000 x 10^4 Joule of potential energy at the top of the hill , if the track is frictionless , what is the coasters velocity at the bottom of the hill?

**Physical science**

How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?

**Physical science**

How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?

**math**

what is equivalent fractions for 6/5?how do you get the answer

**math help**

evaluate meantally 3-15+4 -34-6+12 5(-9-4) 5-3(-4) 1/2(-26) 14-21/-7 -5^2 (-5)^2 -8 -28 -65 -13 1 25

**math**

what is partial-quotient divison???

**science**

what causes the northern and southern lights to occur yyftyrf da ert faerb uoi gfa he tue yuo da dietions da en

**science**

how is the earth's magnetism useful It provides a navigation mark for hikers and sailors.

**home-econimics**

yes

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