01/10/16

Some stars can have a density of 10 billion tons per teaspoonful. Express this density in scientific notation.
In the 1930s, the Indian physicist Subrahmanyan Chandrasekhar and others predicted the existence of neutron stars. 
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01/10/16

simplify each expression
X^2-4/x^2-9 divided by x+2/2x^2 +3x-9
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01/10/16

simplify each expression
Y+4/2x-1 divided by (y+4)
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01/10/16

simplify each expression
Y/2x+2y Times x+y/y^2
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01/10/16

how to find a new price
79$ original price and 5% increase change how much is the new price ??    
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01/10/16

Binomial Theorem
If (1+ax+bx2)4=1+8x+32x2+...., find a and b.
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01/09/16

Equations of perpendicular and Parallel lines
Parallel lines:  1.  parallel to 2x – 3y + 11 = 0 going through (2,–1)  2. parallel to 3x + y = 2y – 4x + 7 going through (–2,–7) Perpendicular lines:  1. Perpendicular to 3y – 2x + 11 = 0... more
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01/09/16

f(x)=-5x+4 input and output table solve
F(x)=-5x+4
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01/09/16

find the 8#term of the following sequence.9,2,10,3,15,8?
 I  need help with some math problem .like find 7#term of the following sequence.60,30,40,20,30
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01/09/16

one-fourth of a number is -60. Find the number
Write an Equation and solve  
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01/09/16

Determine lim x->(infinity) 2^x +sin(x)
How do I solve this? The sine is really confusing me
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01/08/16

write a rule for the following functions.
X -1 0 1 2 y 3/2 1 2/3 4/9
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01/08/16

write a rule for the following functions.
X -1 0 1 2  y 1/24 1/6 2/3 2 3/3
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01/08/16

y=2x+4 y=x+2 how do you solve the system of equations?
I don't know how to solve or graph it. 
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01/08/16

how much is straight time pay?
I worked 36 hrs. per week and I get double time for any hours over 36. last week I worked 42 hrs. and received 545.28. what was my straight time pay?
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01/08/16

solve the liner system using substitution. solve the liner system from problem 1 using elimination.
-x+2/9y=1  9x+3y=6
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01/08/16

The function f(x)varies inversely with x and f(x)=0.5when x=3
Trying to solve this problem
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01/08/16

The % of soldiers who are unavailable for combat has increased approx. linearly for 9% in 2007 16% in 2010.
Sorry There wasn't enough room so here is the full question: The percentage of soldiers who are unavailable for combat has increased approximately linearly from 9% in 2007 to 16% in 2010. The main... more
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01/08/16

10% of the voters did not cast their vote in an election between two canditates
10% of the voters did not cast their vote in an election between two candidates 10% of the votes polled were found invalid the successful candidate got 54% of the valid votes and won by a majority... more
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01/08/16

math xl question from trig
to measure a stone face carved on the side of the mountain, two sightings 800 feet from the base of the mountain are taken. if the angle of elevation to the bottom of the face is 27 degrees and the... more
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01/08/16

Algebra word problem, only need a quick answer
The longest side of a triangle is 3cm longer than twice the shortest side. The other side is 7cm longer than the shortest side.  If the perimeter of the triangle is 94cm, what is the length of the... more
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01/08/16

simplify each of the following expressions.
1. (X2+3x-9) + (-4x2+2x-3).                       2. (X-2)(3x+5).                                           3. (R+3)2                                                      4.... more
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01/08/16

simplify using long division.
1.  (12y2-39y+15+12y3)÷(2y+5).           2. (w3-15w-11)÷(w-4)
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01/08/16

Vertex form is y = a(x - h)^2 + k. If a quadratic function has the vertex form of y = 2(x + 5)^2 - 4, what is the vertex?
Vertex form is y = a(x - h)^2 + k. If a quadratic function has the vertex form of y = 2(x + 5)^2 - 4, what is the vertex? Remember that a vertex is a point, so type it as a point, (x,y), without... more
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01/08/16

Vertex form is y = a(x - h)^2 + k. How do you write the quadratic function y = -3x^2 + 18x + 7 in vertex form?
Vertex form is y = a(x - h)^2 + k. How do you write the quadratic function y = -3x^2 + 18x + 7 in vertex form? A.  y = -3(x + 3)^2 - 74B.  y = 18(x - 3)^2 + 7C.  y = -3(x + 3)^2 + 7D.  y = 3(x -... more
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