How do I know whethter to use a graph or a table to solve a system?

Hello, I am at a section of my class where it teaches how to solve solutions with graphs and tables, and I am on a practice section where it tells me to use either a graph or a table to solve the... more

how many molecules of water are present in half mole of water?

please give answer as early as possible

11/30/17

Calculate speed of the bobsled at halfway down the track and at the bottom of the track

The bobsled has a mass of 1200 kg that is 50 m above the surface of the Earth. Thinking about conservation of mechanical energy (potential and kinetic) calculate the speed of the bobsled halfway... more

11/30/17

A 25.0 gram meteorite composed of iron is moving at a speed of 300 m/s and slams into the Earth.

A 25.0 gram meteorite composed of iron is moving at a speed of 300 m/s and slams into the Earth. Assuming that 50% of the kinetic energy of the meteorite is converted into heat, by how much will... more

11/30/17

a question for my math class i need it done asap!!

A space plane skims the edge of space at 2000 miles per hour. Neglecting altitude, if the circumference of the planet is approximately 21,000 miles, how long will it take for the plane to travel... more

11/30/17

Please help with inverse word problem so I can teach my son

The v of a gas kept at a constant Temperature varies inversely as the pressure p. If the pressure is 24 lbs per square inch, the volume is 15 cubic feet. What will be the volume when the pressure... more

11/30/17

how do you factor ot the coefficient of the varible

doing that what is the answer to 5c-15

11/30/17

if it takes 1/4 cup of flour to make 1/6 of a cake, how many cups of flour are needed to make a whole cake?

I would highly appreciate any answers with steps.

11/30/17

Whats four times y is equal to three times the difference of five and x?

verbally finding equations and ordered pairs

Is x and x^2 the same thing? I mean can you add them to get x^3?

I am just wondering about that. 

is there such a thing as an irrational number?

irrational numbers are numbers that don't repeat and don't terminate. but is there actually such a thing? at a certain point, it will definitely repeat no? so is there such a thing as an irrational... more

11/30/17

a is 30% of b an b is 90% of c what percentage of c is a

please help me with this

i think of a number, square it, then subtract the original number. The result is 30. What could the number be?

can you give me the 2 possible answers to this question please?

11/30/17

how do i find the answer to n+0=n

jjj;  

11/30/17

Dropped from a cliff.

A cliff is 36 feet above the water. If an object is dropped from the cliff, the formula h=36-16t^2 will give the height above the water's surface, in feet, of the object at t seconds from the time... more

11/30/17

a block is moving with a velocit v on a straight surface what is the shortest distsnce and shortest time the block can be stopped

this is a question of friction i want the answer  

The side length of a square is 9.6x10^5

to find an area of a square is A=a^2, but i can’t find the answer? Or my answer is wrong. please help me! Well appreciated. 

11/28/17

Solve the equation by factoring.

x3 + 5x2 - x - 5 = 0   How do I solve this step by step?

11/28/17

Solve the equation by factoring

(x-9)(x2 + 9x + 18)=0How do i solve this step by step?

Three angles that make up a triangle are x degrees, (5x+17)degrees, and (9x-32) degrees. What is x?

this question is for my school its homework and i dont understand

11/28/17

How much work is done by hand

A mass of 20 kg compresses a spring 50 cm. The spring is then compressed an additional 2 meters by hand and then the mass and spring are released. Spring constant is 392 N/mA)During compression... more

11/28/17

Trigonometry but this makes no sense??

The dock is 5 ft above the edge of a boat. If the boat is being pulled into the dock and has 32 ft of rope out, how far away from the dock is the boat?

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