winston
Most popular questions and responses by winston
calculus
If x2+xy=10, then when x=2, dy/dx=?
asked on December 31, 2010 
Math
A pig farmer wants to enclose a rectangular area and then divide it into three pens with fencing parallel to one side of the rectangle (see the figure below). There are 940 feet of fencing available to complete the job. What is the largest possible total
asked on December 10, 2014 
Statistics
You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample is normal, which of
asked on October 25, 2016 
MATH
In a fraternity with 38 members , 18 take math, 5 take both math and literature and 8 take neither math or literature. how many take literature but not math? I came up with 16 is that correct or am i lost ?
asked on November 24, 2014 
Computer Architecture
home / study / engineering / computer science / computer science questions and answers / 4.7 problems in this exercise assume that the logic blocks used to implement a processor’s ... Question: 4.7 Problems in this exercise assume that the logic blocks
asked on November 15, 2017 
MATH
a crew consists of 1 apprentice, 1 journeyman and 1 master carpenter. The crew receives a check for $5950 for a job. A journeyman makes 300% of what a apprentice makes, and a master makes 150% of what journeyman makes how much do each person on the crew
asked on December 1, 2014 
math
the gauss's approach to find the following 1+2+3+4+... 99 1+3+5+7+...101
asked on December 1, 2014 
Chemistry
electromagnetic radiation of which frequency (in Hz) can be emitted by the hydrogen atom upon transition of an electron from n= 6 to n= 2 according to the bohr model.
asked on May 8, 2012 
Math
Gary walked 1 1/2 km to school, then 750 m to his job, then 1 km home. How many kilometres did he walk altogether?
asked on October 23, 2016 
Linear Algebra
Let T be a linear operator on R2 defined as follows on the standard basis of R2. T(1, 0) = (3, 2), T(0, 1) = (−1, 4). Find T(9, 4).
asked on March 21, 2016 
physical science
find the mass of sodium chloride formed when 6.9g of sodium burns in a gas jar filled with chlorine gas.
asked on February 22, 2012 
help on calculus
A spherical balloon is being filled with air in such a way that its radius is increasing at a rate of 2 centimeters per second. At what rate is the volume of the balloon changing at the instant when its surface has an area of 4 pi or 12.56637061 square
asked on December 30, 2010 
Math
A shirt button gas a mass of 400 mg. A factory produces a tonne of these buttons in a year. How many buttons does it produce.
asked on October 23, 2016 
english(4th grade)
Identify the gerund and classify whether it is used as a subject, direct object, indirect object, predicate noun, appositive, and object preposition. 1. He left without saying goodbye. 2. Studying is investing for the future. 3. Making a major
asked on December 27, 2014 
english (4th grade )
Identify the gerund and classify whether it is used as a subject, direct object, indirect object, predicate noun, appositive, and object preposition. 1. He left without saying goodbye. 2. Studying is investing for the future. 3. Making a major decision is
asked on December 26, 2014 
Math
using gauess approach 1+2+3+4+... +99 1+3+5+7+...+101
asked on December 16, 2014 
math
slove for ^x x^23x18=0
asked on March 11, 2014 
Theory of Computing
1. Prove by induction that b  a  b^n  a^n for all n >= 1.
asked on September 19, 2017 
Math
What criterias do two graphs have to meet in order to be isomorphic? I know they must have the same number of vertices and edges. Do they both have to be bipartite/nonbipartite?
asked on March 2, 2017 
Math
Sorry posted the wrong question earlier. Let A and B be sets. Show that A \ (A \ B) ⊆ B.
asked on January 27, 2017 
Math
What is the value of x after these statements if the starting value of x is 3. (a) If x^2 = 5^x then x := 25^x. (b) If x^2 > x and x^3 < 4x^2 then x := x+ 2. (c) If 4^x < x^4 or x^5 > 5^x then x := x^2. (d) If 5^x > 2^x xor x^2 < 11 then x := x + 8. (e) If
asked on January 15, 2017 
Dylan
Find two distinct intervals where f(x) = x^7 + 3x^2  11x + 5 has at least one root.
asked on January 19, 2016 
math help
given the function F described by f(x)x6. find f(7)
asked on December 5, 2014 
math
find the prime factorization of 35^3 *55*9^11
asked on November 25, 2014 
math
sub 780 for x 2,5x^2 +2825x 115,812.5
asked on March 19, 2014 
math
substitute 400 for x 0.005x^245x+12,000
asked on March 18, 2014 
MATH
Use your calculator to compute the actual roots. Use the Quadratic Formula to solve x2 – 4x – 8 = 0.
asked on March 12, 2014 
math
x(6x+1)
asked on March 10, 2014 
math
y=9(7+4)^2+9
asked on March 9, 2014 
math
simplfy 3 root 3/8
asked on February 28, 2014 
College Mathematics
The mass of a large stone block was determined to be 3361 kg. What is the weight of this stone in tons? A. 3.7 B. 1680.5 C. 1512.45 D. 3361
asked on January 5, 2014 
Math
When the moon is at its zenith at a point A on earth, it is observed to be at the horizon from point B. Points A and B are 6155 mi apart and the radius of the earth is 3960mi. Estimate the distance of the moon. Thanks!
asked on May 8, 2012 
Theory of Computing
Prove the following identities in a Kleene algebra. a) (a + bb + ba(b + aa)* ab)* = (a + b(ab*a)* b)* b) a* + a*b(ba*b +ab*a)* ba* = (a + b(ab*a)* b)*
asked on October 22, 2017 
Math
Prove that if A∩B = A∪B then A=B. Having troubles figuring this one out.
asked on April 17, 2017 
Math
What criterias do two graphs have to meet in order to be isomorphic? I know they must have the same number of vertices and edges. Do they both have to be bipartite/nonbipartite?
asked on March 3, 2017 
Math
Decide if the following pair of functions are of the same order. The functions f(x) and g(x) are of the same order if f(x) is O(g(x)) and f(x) is Ω(g(x). (a) f(x) = x^2  7 and g(x) = x^2 + 7
asked on February 6, 2017 
Math
Decide if the following pair of functions are of the same order. (a) f(x) = x^2  7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x
asked on February 2, 2017 
Math
Decide if the following pair of functions are of the same order. (a) f(x) = x^2  7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x
asked on February 1, 2017 
Math
Decide if the following pair of functions are of the same order. (a) f(x) = x^2  7 and g(x) = x^2 + 7
asked on January 31, 2017 
Math
Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7  150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋
asked on January 30, 2017 
Math
Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7  150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋
asked on January 29, 2017 
Math
Let A and B be sets. Show that A\B(A\B) ⊆ B.
asked on January 27, 2017 
Math
Let A and B be sets. Show that A\B(A\B) ⊆ B.
asked on January 26, 2017 
Math
Let A and B be sets. Show that A\B(A\B) ⊆ B.
asked on January 26, 2017 
Math
Suppose that the domain of discourse is the set {2, 1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)
asked on January 16, 2017 
Math
Suppose that the domain of discourse is the set {2, 1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)
asked on January 16, 2017 
Math
Suppose that the domain of discourse is the set {2, 1, 0, 1, 2}. Express the following statements without using quantifiers, using only the connectives ¬, V, Λ. (a) ∃x P(x) (b) ∀x P(x) (c) ∃ ¬P(x) (d) ∀ ¬P(x) (e) ¬∃ P(x) (f) ¬∀ P(x)
asked on January 15, 2017 
Math
Consider the propositions p: "You like hockey.", q: "You like the cold.", r: "You play hockey.", and s: "You watch hockey." Write the following propositions using p,q,r and s and logical connectives. (a) You watch hockey but you do not play hockey. (b) If
asked on January 14, 2017 
Math
In a 5 km race, Anna swims 450 m, then runs 800 m. She then cycles the rest of the race. How many kilometres does she cycle?
asked on October 23, 2016 
Math
Three blocks, each 15 cm thick, are stacked on top of a 1.2 m box. How many metres high is the stack?
asked on October 23, 2016 
Math
Pat cuts a 40 cm length off a 3 m ribbon. How many centimetres of ribbon remain?
asked on October 23, 2016 
math
Find two distinct intervals where f(x) = x^7 + 3x^2  11x + 5 has at least one root.
asked on January 19, 2016 
math
Find the value of K such that the map f is continuous at x = 2 if f(x) = { K/((x^2)+4) if 5
asked on January 19, 2016 
math
Find all the values of x in the interval [0, 2pi] such that tan^2(x) = 3.
asked on January 19, 2016 
math
Knowing that 0
asked on January 18, 2016 
MATH
5^6 * 5^3
asked on December 4, 2014 
MATH
put in order from largest to smallest 0.54, 0.60686, 0.5065
asked on November 14, 2014 
math
the mass of a grain of sand is 8.7*10^8 write the nurmeral in secentence in standard form.
asked on November 14, 2014 
MATH
sub 789 for x 2.5x^2 +2825x115,812.5 having troubble undeerstanding the process . could someone show me step by step..
asked on March 19, 2014 
MATH
sub 789 for x 2.5x^2 +2825x115,812.5
asked on March 19, 2014 
math
subsititude 9 for x 123x^2492x+813
asked on March 17, 2014 
math
select the approximate values of x that are solutions to f(x)=0 where f(x)5x^2+8+5
asked on March 14, 2014 
math
select the approximate values of x that are solutions to f(x)=0, f(x)=8x^2+2x+4
asked on March 14, 2014 
math
2x^2+7=9
asked on March 12, 2014 
math
x^2+x18=0 quadratic equation slove for x
asked on March 11, 2014 
math
14x^2+19x+32=18
asked on March 10, 2014 
math
y=5x^2+10x1
asked on March 9, 2014 
MATH
NEED SOME HELP 2x^2+5x+3=0
asked on March 9, 2014 
math
help pleaSE factorable quadratic equation and solve for the roots: 2x^2 + 13x + 20=0
asked on March 9, 2014 
MATH
f(x)= 6x1 and g(x)=4x^2 select the soultion for (f+g)(x) stuck not sure which answerer is correct 24x^21 or 24x^34x^2
asked on March 9, 2014 
MATH
F(X)=61 AND G(X)=4X^2 WHAT WOULD THE SOLUTION FOR (FG) (X) BE. im stuck between 24x^21 or 24x^34x^2
asked on March 9, 2014 
math
help select the x coordinate of the vertex of paraloa defined by function f(x) 5x^2+7x+3 stck between two options =5/7 or 7/5
asked on March 8, 2014 
math
can some one help me ... determind the equation of g(x) that results translating the funtion f(x)=x^2 +19 upward 15 units,,,, the answere im stuck is not sure g(x)=x^2+24 0r is it g(x)=(x+15)^2 +9
asked on March 8, 2014 
MATH
HELP PLEASE y = 3x2 + 2x – 1
asked on March 7, 2014 
math
im stuck on this problem can some one please explain.. y=9(7+4)^2+9
asked on March 7, 2014 
math
i need some help please 2x^2 +53
asked on March 7, 2014 
math
need help! solve for y 7y^252y32=0
asked on March 7, 2014 
math
i need help understanding this problem. 3x^2+4x+2=0
asked on March 4, 2014 
math
need some help 2x^2 + 5x 3
asked on March 4, 2014 
MATH
help 16^2ã24/6ã56
asked on March 2, 2014 
MATH
can somone help! 7ã2*3ã9
asked on March 2, 2014 
MATH
help... 5sqrt(8)  3sqrt(18) + sqrt(3)
asked on March 1, 2014 
MATH
PLEASE HELP ME! 4sqrt2+6sqrt4
asked on March 1, 2014 
math
need help 3x^2sqrt(5x) * 3sqart(3x^3)
asked on February 28, 2014 
College Mathematics
Solve: 8.5x +8 = 1.3x + 15 A. x = 50.4 B. x = 0.7 C. x = 3.2 D. x = 1.0 Is B the correct answer
asked on January 5, 2014 
Personal Finance
You and your spouse both have good retirement plans through work, and both receive social security checks based on your own incomes. If your goal is to maximize the size of your annuity check everymonth which option should you choose? A. Single Life
asked on December 14, 2013 
Personal Finance
Social Security is all but: A. financed through working individuals and employers. B. a government benefit paid to elderly and disabled. C. a specific savings plan to which individuals contribute and from which they benefit. Is the Answer C ?
asked on December 14, 2013 
Math
estimate the sum or difference by rounding the nearest one 9.87 +4.05
asked on November 11, 2010

Math
Anyway to do it without drawing?
posted on April 17, 2017 
Math
I was never asking for the answer
posted on February 1, 2017 
Math
I'm not sure. eecs.yorku.ca/course_archive/201516/F/1019/assn/A6.pdf Question 30 shows an example but I don't really understand.
posted on January 31, 2017 
Math
It's actually A \ (A \ B) ⊆ B
posted on January 27, 2017 
Math
does this look good to you? (a). x = 3 (b). x := 3 + 2 = 5 (c). x := 32 = 9 (d). x := 3 + 8 = 11 (e). x = 3
posted on January 15, 2017 
Math
Thanks. so what would an example solution for a?
posted on January 15, 2017 
Math
Just want to make sure what I'm doing is right. Thanks!
posted on January 14, 2017 
Business Math
april 26
posted on September 15, 2016 
math
Need help computing this limit. lim x>0 x^3 (1  5sin(1/x)) I can't figure out how to remove the x.
posted on January 19, 2016 
4th grade math
500
posted on October 20, 2015 
Math
52m
posted on September 3, 2015 
english(4th grade)
1.object of preposition 2. Predicate noun
posted on December 27, 2014