03/29/16

is there any easy way to calculate (x+iy)^n +(x-iy)^n
I know the usual binomial theorem method but i wanted to know some easier method
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03/28/16

Equation of circle given center and tangent line
Write the equation for a circle which has its center at (1, 2) and is tangent to the line -3x+2y= 14 Solve algebraically.   I know that the equation of a circle is r2=(x-h)2+(y-k)2. So, at this... more
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03/28/16

Elsa made $192 for 12 hours of work. At the same rate, how much would she make for 18 hours of work?
j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j
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03/28/16

What was the height of the tree?
A forester measured 200 ft from the base of a tree. She then measured the angle of elevation to the top of the tree at 29 degrees. What was the height of the tree?
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03/28/16

If 29 slices of roast beef weight 22 ounces, how many ounces is each slices? how many slices are in 2 ounces?
 If 29 slices of roast beef weight 22 ounces, how many ounces does each slice weigh? How many slices are in 2 ounces of roast beef? 
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03/28/16

Help solving these equations?
The formula for the kinetic energy of a moving object is E = 1/2mv, where E is the kinetic energy in joules, m is the mass in kilograms, and v is the velocity in meters per second.   1- solve the... more
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03/28/16

Find the domain. Write answer in interval notation.
m(x) = x - 5           -------           x + 4
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03/28/16

Use the slope formula to determine the slope of the line containing the two points?
(6,0) and (0,-4)
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03/28/16

help with a question
A jar contains 10 blue marbles, 5 red marbles, 4 green marbles, and 1 yellow marble. Two marbles are chosen (without replacement). (a) What is the probability that one will be green and the other... more
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03/28/16

Cells grow in size in portion to the size of an organism
 True or false questionaire
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03/28/16

Probability density
Hello   Could someone give me the answer to this question please I have just started a course on big data   (3/k is a fraction)  Find k such that f(x) = 3/k x4 is a probability density... more
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03/28/16

Finding the angles in a triangle
Given the triangle of the roof, if the two bottom angles are the same measure, and the top angle is four more than three times as much as the other two angles, determine each angle measurement
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03/28/16

when writing the domain and range of a graphical function how is it written?
relations and functions
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03/28/16

the area of a square is 4x^2-12x+9. what is the side length of the square?
the length of a rectangle is two times more than the side length of the square, and its width is 4 inches less than the side length of the square. what is the rectangles area?
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03/28/16

can someone help me with this probability question.
A fair coin is flipped 9 times. What is the probability of getting exactly 6 heads?So i figured that 29=512 but that is as far as i can get. Can someone please help me.
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03/28/16

to create an entry code, you must first choose 2 letters and then, 5 single-digit numbers. how many different entry codes can you create?
algebra 2 question. find how many possible entry codes there can be. 
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03/27/16

The time that a skier takes on a downhill course has a normal distribution with a mean of 12.3 minutes and a standard deviation of 0.45 minutes.
What is the probability that on a random run this skier takes less than 11 minutes?
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03/27/16

How would I find the radius of a circle knowing its radian measure and area of the sector?
Q: An arc on a circle subtends a central angle of θ=4 radians, and the area of the sector is 128 cm2. Determine the radius, r centimeters, of the circle.   I know the formula is A= .5 x theta x... more
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03/27/16

Algebra 1 question
Is y=-3x, 3x+y=6, a consistent, inconsistent, dependent, or independent system?
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03/27/16

25 foot ladder placed against building. Bottom of ladder is 7 feet from building. If top ladder slips 4 feet how much will bottom slip?
A 25 foot ladder is placed against a building. The bottom of the ladder is 7 feet from the building. If the top the ladder slips 4 feet, how many feet will the bottom slip?
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03/27/16

Related rates problem
The rate at which ice is melting in a pond is given by dV/dt= √(1+2t), where V is the volume of ice in cubic feet, and t is the time in minutes. What amount of ice has melted in the first 5... more
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03/27/16

Statistics Question: The repair cost of a Subaru engine is normally distributed with a mean of $5,850 and standard deviation of $1,125.
The repair cost of a Subaru engine is normally distributed with a mean of $5,850 and standard deviation of $1,125. Random samples of 20 Subaru engines are drawn from this population and the mean... more
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03/27/16

find derivative---
f(x)=lnx/x2
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03/27/16

Dary owes $458 in taxes he currently has $375 how much does he need
I need to find out how much he needs
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03/26/16

Determine the following
Determine the following B ∪ C.   U={a,b,c,d,e,f,g,h,I,j,k} A={a,c,d,f,I} B={b,c,d,f,g} C={a,b,f,i ,j}
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