11/04/17

Linear Algebra And Matrix
4x+5y=a 5x+6y=b   so   x=? y=?
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11/04/17

Linear Algebra And Matrix
Determine the value of k for which the system   x+y+2z=0 x+2y-3z=-2 3x+9y+kz=-11   has no solutions.   so, what's k = ?
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11/04/17

Peter is 30% heavier now than he was 10 years ago. If he was 65kg then, how heavy is he now?
Peter is 30% heavier now than he was 10 years ago. If he was 65kgthen, how heavy is he now?
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11/04/17

The area of a square is numerically 60 more than the perimeter. Find the length of the side of that square.
Polynomial functions question, has me stumped it seems simple but im trying to figure out how to do it correctly. If anyone knows the answer please let me know as soon as possible thanks.
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11/04/17

What is a geometrical interpretation of a harmonic function?
More specifically, what geometrical properties does a function need to have, in order to satisfy the laplace equations? (other than it being 2nd order differentiable)
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11/04/17

Tangent Function
Let h=90 (hypotenuse side) and ℓ=22(opposite side from tan(θ). Find tan(θ) in the triangle below and leave your answer in exact form. does not provide adjacent side of triangle and is a right... more
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11/03/17

A penny is thrown from the top of a 28.9-meter building and hits the ground 2.71 seconds after it was thrown. The penny reached its maximum height above the gro
A penny is thrown from the top of a 28.9-meter building and hits the ground 2.71 seconds after it was thrown. The penny reached its maximum height above the ground 0.56 seconds after it was... more
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11/03/17

Kendra has $ 2.25 2.25 in dimes and nickels. If she has 2 2 times as many dimes as nickels, how many of each coin does she have?
Kendra has $2.252.25 in dimes and nickels. If she has 22 times as many dimes as nickels, how many of each coin does she have?
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11/03/17

9. Find the equation of the line passing through (3, 1) and (4, – 1): A. 5x–4y= 11 B. 2x+5y = 3 C. 2x+y = 7 D. 3x+4y = 8
need assistance with multiple ??
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11/03/17

How do you find the direction of the resultant vector?
A pedestrian walks East at the rate of 6 km per hour. The wind pushed him NorthWest at a rate of 13 km per hour. Find the direction of the resultant vector. (round to the nearest tenth)I am very... more
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11/03/17

What is the heat capacity of 30.0 g of an object if it requires 251.0 J to raise the temperature of the object by 2.00 ˚C?
A little help please? 
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6.8

11/03/17

One positive number is 4 more than a second number and their product is 77 find the two numbers
What are the two numbers 
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11/03/17

What is the magnitude of the resultant vector?
a pedestrian walks a rate of 6km per hour east. The wind pushes him northwest at a rate of 13 km. per hour. Find the magnitude of the resultant vector
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11/03/17

What are two technologies that are valued in industrialized nations
I don't get this book it's hard 
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11/03/17

The spring of a spring gun is compressed a distance d of 3.2 cm from its relaxed state, and a ball of mass m = 12g is put in the barrel. With what speed will
the ball leave the barrel once the gun is fired? The spring constant is 7.5 N/cm. Assume no friction and a horizontal gun barrel. 
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11/03/17

In 1896 in Waco, Texas, William Crush of the “ Katy” railroa parked two locomotives at opposite ends of a 6.4 km track, fired them up, tied their throttles
open, and then allowed them to crash head-on at full speed in front of 30 000 spectators. Hundreds were hurt by flying debris; several were killed. Assuming the weight of each locomotive was 1.2... more
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11/03/17

A 15 kg crate is pulled at constant speed a distance d= 5.7m up a frictionless ramp, to a height h of 2.5 m above its starting point. a) What force F must
the cable exert on the crate? b) How much work is done on the crate by the force F?
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11/03/17

value of x when m=2 and k=4
i need to solve this maths equation if also u can solve this equation value of m when x=19 and k=5
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11/03/17

What is the mass of block m2?
A block of mass m1=0.700 kg is connected over a pulley to a mass m2. For an angle of theta=30.0° and a coefficient of kinetic friction of μ= 0.400, an acceleration of magnitude a=0.450 m/s² is... more
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11/03/17

A bacteria culture starts with 3000 bacteria. After 3 hours the estimated count is 48000. Whatbis the doubling periond?
It is a possible test question
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11/02/17

An African elephant can reach heights of 13 feet and possess a mass of as much as 6000 kg. Determine the weight of an African Elephant in Newtons and in pounds
1.00 N = .225 pounds 
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11/02/17

The late fee is 2$ regardless if the number of days the movie is late
The exercise tell me i need to find the slope but truthfully ive looked at it through every angle i can think off and im stumpped plz help (btw yes that is all the info it gives)
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11/02/17

There are 340 black cats and spiders, with 2032 legs. How many of are there?
There is nothing else you need to know.
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11/02/17

parallel to given line
Point 2,0 parallel to y=-1/2X + 1/5
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11/02/17

At 7 P.M., a burning candle is 18 inches tall. At 9:30 P.M., the candle is 8 inches tall. At what rate is the height of the candle decreasing?
I figured out 4/1 but lost my work how do I get there
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