08/26/15

algebra 2 problem
Could some one answer this please.Write the function whose graph is the graph of y = |x|, but is vertically stretched by a factor of 8
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08/26/15

'e' increased by 20% is equal to 'f' increased by 50% show that e = 1.25f
The actual question says "'e' increased by 20% is equal to 'f' increased by 50% show that f = 1.25e" however my teacher says that's wrong. I have no idea how to do this.
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08/24/15

Calculus Question
If the density of an 18 in long metal bar is proportional to the distance from one endpoint then the centroid of the bar is 12 in from that same endpoint
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08/24/15

List the elements
Let X = {0,1,2} 1. C = {z:z = 2x and x element X} 2. C = {z:z = x + y where x element X and y element X} 3. C = {z:z element X and -z element X}
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08/24/15

All about sets
Why is that the elements/answer of set A is {1/3, -2} from the notation {x:(3x-1)(x+2)=0   Please explain    AND What is the cardinality of A = {}? Should we consider it even if it is not... more
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08/24/15

Find the center of mass of each two dimensional system.
Four cities plan to build a new airport to serve all four communities. City B (population 180,000) is 4 mi north and 3 mi west of City A (population 75,000). City C population 240,000 is 6 mi east... more
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08/24/15

Prove that
(a+b+c) (ab+bc+ca) ≥ 9abc  
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08/24/15

six times the number increased by 17 is -121
I just need help with my high school math homework!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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08/23/15

Is {} an element or a subset or not an element nor subset of irrational numbers?
Please justify.
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08/23/15

Listing elements or cardinality
A. List the elements of each of the following (roster method). Use '...' notation for infinite sets Let X = {0,1,2} B = {z : z = 2x and x element X} B = {z : z = x + y where x element X and y... more
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08/23/15

Find the following
Let U be the set of counting numbers between 11 and 20, inclusive.  A = {x element U : x is divisible by 2} B = {11,12,13,14,15} C = {x element U : x is odd}   Find (i) [(B intersect A) \ C] x... more
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08/23/15

Write T if the statement is true; write F otherwise
Let A = {{x}}, B = {x,{x}}, C = {x,{x,{x}}}.   i. {} subset B ii. B proper subset C iii. A element B iv. x element A v. B element C vi. A subset B   I just want to compare my answers.... more
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08/22/15

successful 75% of the time. If the results of 9 such surgeries are randomly sampled, what is the probability that more than 7 of them are successful? Carry you
 successful 75% of the time. If the results of 9 such surgeries are randomly sampled, what is the probability that more than 7 of them are successful?
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08/22/15

Algebra 2 Word problem Question
You want to measure the height of a mountain. You are at an unknown distance from a mountain. The angle of elevation to the top of the mountain is 65 degrees. You step back 100 yards and measure... more
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08/22/15

Exponents and radicals
I need to know how to turn y=4/square root of x into y=kxr
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08/22/15

Proove that
m5 - 5m3 + 4m is always divisible by 120, m ∈ N
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08/22/15

algebra 2 question
How does one find the average rate of change? What is the average rate of change of f (x) = x^3 -9x +6 from -8 to -5(b) -1 to 1(c) 1 to 2
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08/22/15

Proove that
log32 is not a rational number
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08/22/15

Find the number of digits in the number
21999 × 51989
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08/22/15

A test with 100 MCQ were set and each question have 4 choices. One mark will be allocated for each correct answer.
If you know the answer for 40 questions and guess the answer randomly for other questions, how many marks will you expect to get? To discourage students from simply guessing the answer randomly,... more
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08/21/15

If f(x +y)= f(x) + f(y) + 2xy. find f(8).
  x,y∈N and f(1)=4
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08/21/15

find the value of n for which the following equation is a perfect cube
39+312+315 + 3n
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08/21/15

Calculate the density.
Laken pipets 5.00 mL of ethanol into a flask weighing 15.25 g. She finds the mass of the flask plus ethanol is 19.17 grams. Calculate the density of ethanol alcohol.
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08/20/15

please helpp
How are discontinuities created in a rational expression?   How are zeros identified in a rational expression?
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08/20/15

r=5 mph, t=4 hours, d= miles
Use the formula d=rt to find the value of the missing variable.
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