05/15/16

If 500 kgs of grass will feed 20 cowd for a week,for how many days will 200 kgs of grass feed 14 cows
500 kgs of grass will feed 20 cowd for a week,for how many days will 200 kgs of grass feed 14 cows
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05/14/16

Find side AB in triangle ABC if side AC = 300 and angleBAC = 62 and angleBCA = 53.
Find side AB in triangle ABC if side AC=300 and angleBAC=62 degrees and angleBCA=53 degrees. Hint: law of sines. 
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05/11/16

Answer the question below:
The half-life of a radioactive element is the time it takes for 50% of its atoms to decay into something else. The half-life of radon-222 is about 3.8 days. About how many grams of radon-222 would... more
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05/09/16

How long does it take for a falling person to reach the 90 percent of this terminal velocity?
The terminal velocity of a person falling through air is about 400Km/hr. The acceleration due to gravity is 10ms−2. Use this information to find out what C is in the equation v′=C(g/C−v), where g... more
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05/09/16

Would very much appreciate it if someone would help me with this question.
How much heat is needed to boil 2.65 kg of water at its boiling point? Use Q = mass latent heat of vaporization. Properties of water Property ValueMelting point 0CBoiling point 100Ccliquid 4.18... more
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05/09/16

Calculus I Optimization
 A wire of length 15 is cut into two pieces which are then bent into the shape of a circle of radius r  and a square of side s  . Then the total area enclosed by the circle and square is the... more
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05/07/16

A 6 kg box is held at rest by two ropes that form 30 degree angles with the vertical. What is the tension (T) in either rope?
Applying Newtons laws
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05/07/16

A box of mass 44kg is pushed hard enough to set it in motion across a flat surface. The coefficient of kinetic friction between the box and the surface is .48.
The rest of the question is What minimum pushing force is needed to keep the box moving at a constant velocity?
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05/07/16

A force of magnitude 30N stretches a spring .83m from equilibrium. What is the value of the spring constant.
Applying Newtons laws
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05/07/16

A block of ice is sliding down a ramp of slope 40 degrees to the horizontal. What is the rate of acceleration of the block?
Applying Newtons laws
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05/04/16

find the length and width of the plot that will maximize the area.
you have 600 feet of fencing to enclose a rectangular plot that borders on a river. you are not going to fence the side along the river.
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05/04/16

If the graph compares the calories you burn to the number of minutes you exercise what does the slope tell you?
graph and slope
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05/03/16

A toy rocket is launched from the top of a building 55 feet tall at an initial velocity of 242 feet per second.
A toy rocket is launched from the top of a building 55 feet tall at an initial velocity of 242 feet per second. a) Give the function that describes the height of the rocket in terms of time t b)... more
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05/03/16

Use the quadratic formula to solve : 0.7x^2-4.2x-0.7=0
Use the quadratic formula to solve : 0.7x2-4.2x-0.7=0 The solution set is {_}
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05/03/16

When the Celsius temperature is 10 degrees, the corresponding Fahrenheit temperature is 50 degrees...
When the Celsius temperature is 10 degrees, the corresponding Fahrenheit temperature is 50 degrees. When the Celsius temperature is 115 degrees, the corresponding Fahrenheit temperature is 239... more
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05/02/16

Rewrite the following expression by using the laws of logarithms.
Log9(*squareroot*Q)   A. 2Log9(Q) B. Log9(Q) C. 1/2Log2(Q) D. 1/2+Log9(Q) E. 1/2Log9(Q) F. None of the above.
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05/02/16

Rewrite the following expression by using the laws of logarithms.
Log8(x3)   A. Log8(3x) B. 3Log8(x) C. 3+Log8(x) D. Log3(8x) E. Log(x3) F. None of the above.
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05/02/16

Rewrite the following expression by using the laws of logarithms.
Log3(13RQ/V)   A. Log3(13)+Log3(R)+Log3(Q)+Log3(V) B. Log3(13)+Log3(R)-Log3(Q)-Log3(V) C. Log3(13)+Log3(R)+Log3(Q) D. Log3(13)-Log3(R)-Log3(Q)+Log3(V) E. Log3(13)+Log3(R)+Log3(Q)-Log3(V F.... more
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05/01/16

Solve the problem
The amount of alcohol in the bloodstream, A, declines at a rate proportional to the amount. That is, dA/dt = kA If k=-0.3 for a person, how long will it take for his alcohol concentration to... more
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04/29/16

A table is rectangular and its length is twice its width. Find the dimensions of the table if it occupies 72 ft2 of floor space.
 What is the width and length of table
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04/28/16

A 2589-kg van runs into the back of a 825-kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road is negligible, calculat
how would you solve a problem like this?
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04/28/16

Physics electricity - electric force, potential, field, PE
True statements about the relationship between the electric field and electric potential include which of the following?    I. If the electric field at a certain point is zero, then the electric... more
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04/28/16

Ganymede, one of Jupiter’s moons, is larger than....
Ganymede, one of Jupiter’s moons, is larger than planet Mercury! Its mass is 1.54 x 1023 kg, and its radius is 2.64 x 106 m. What is the escape velocity for a space vehicle trying to leave... more
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04/27/16

The product of two consecutive natural numbers is greater than their sum by 109.
Find these numbers.
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04/26/16

Evan flies a plane against a headwind for 4161 miles. The return trip with the wind took 16 hours less time. If the wind speed is 8 mph, how fast does Evan fly
Evan flies a plane against a headwind for 4161 miles. The return trip with the wind took 16 hours less time. If the wind speed is 8 mph, how fast does Evan fly the plane when there is no wind?
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