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Question 1185113: Nicole is 7 years older than her
brother. In 5 years, what will be
the difference between their ages?
Click here to see answer by ikleyn(52747)

Question 1185113: Nicole is 7 years older than her
brother. In 5 years, what will be
the difference between their ages?
Click here to see answer by POOPFACE(1)

Question 1184848: Expand (1/4+2x) as a series of ascending powers of x up to the term x^3 and state the range of values of x for the expansion to be valid. Hence, use the expansion to approximate 1/(4.05)^2 correct to 4 significant figures by taking a suitable value of x
Click here to see answer by robertb(5830)

Question 1185140: Two boards are placed end to end to make a walkway. One board is 2 feet 11 inches long, and the other board is 2 feet 10 inches long. How long is the walkway?
Write your answer in feet and inches. Use a number less than 12 for inches?
ft in
Click here to see answer by josgarithmetic(39613)

Question 1185135: Minimize cost = $4X + $7Y
Subject to the constraints
2X + 3Y >= 60
4X + 2Y >= 80
X <= 24
X, Y >= 0
Use Excel to solve the original LP and use the sensitivity reports to answer the following questions. Each question is independent of the others. Determine if (and how) the following changes would affect the optimal solution values and/or cost.
a. The cost per unit of Y increases to $9.
b. The first constraint changes to 2X + 3Y >= 90.
c. The third constraint changes to X <= 15.
Click here to see answer by ikleyn(52747)

Question 1185198: Use the principle of mathematical induction to show that the statement are true for all natural numbers
2^3+4^3+6^3+---+(2n)^3=2n^2(n+1)^2

Click here to see answer by ikleyn(52747)

Question 1185289: 1.) sum of the roots of 2x²-15x+3=0
2. product of the root of 2x²-15x+3=0
3. sum of the roots of 4x²-3x-1=0
4. product of the roots of 4x²-3x-1=0
5. sum of the roots of 6x²+2x=0
6. product of the roots of 6x²+2x=0
Click here to see answer by Edwin McCravy(20054)

Question 1185456: The equation of line passing through origin and perpendicular to line 2x² - 5xy + y² = 0 is ____?
A. 2x² + 5xy + y² = 0
B. x² - 5xy + 2y² = 0
C. x² - 5xy - 2y² = 0
D. x² + 5xy + 2y² = 0
E. None of these
Click here to see answer by greenestamps(13195)

Question 1185462: The equation of line passing through origin and perpendicular to line:
2x + y - 5 = 0 is ____?
A. 2x + y + 5= 0
B. x - 2y + 5 = 0
C. x - 2y - 5 = 0
D. x + 2y + 5= 0
E. None of these
[Note: If answer is option E, then find the exact answer]
Click here to see answer by ankor@dixie-net.com(22740)

Question 1185469: Find the least whole number that must be added to 1122 to get the perfect square number.
Click here to see answer by MathLover1(20849)

Question 1185469: Find the least whole number that must be added to 1122 to get the perfect square number.
Click here to see answer by ikleyn(52747)

Question 1185485: Please help me solve this:A helicopter is travelling upward at a steady velocity of 5 metres per second,when a parcel falls out of the door. 4.2 seconds later the percel hits the ground.
a)how high was the helicopter when the parcel fell out?
b)how high was the helicopter when the parcel hit the ground?
Click here to see answer by ikleyn(52747)

Question 1185604: Three years ago,Ali was eight times as old as Adi.Three years from now,Ali will only be five times as old as Adi.Find their present ages.
Click here to see answer by math_helper(2461)

Question 1185605: Lydia and Nazeerah were walking to school when they spotted a herd of 30 cows and
ducks on a farm. If there were a total of 92 animal legs, calculate the number of
cows and the number of ducks on the farm.
Click here to see answer by Plocharczyk(17)

Question 1185697: Find the two times between 11 and 12 o'clock when the hands of the clock are at right angles to each other.
Click here to see answer by greenestamps(13195)

Question 1185676: Show that if f’(x) is a piecewise continuous on [a,b] , then f(x) is piecewise continuous as well.
Click here to see answer by Alan3354(69443)

Question 1185676: Show that if f’(x) is a piecewise continuous on [a,b] , then f(x) is piecewise continuous as well.
Click here to see answer by robertb(5830)

Question 1185747: Solve the equation | x + 1 | + | 2x - 3 | = 8.
Click here to see answer by math_helper(2461)

Question 1185746: Solve the simultaneous equations y = | x-5 | and y = | 3-2x | + 2.
Click here to see answer by greenestamps(13195)

Question 1185753: If the radius of a sphere is increasing at the constant rate of 3 millimeters per second, how fast is the volume changing when the surface area 4πr2 is 10 square millimeters?

Click here to see answer by greenestamps(13195)

Question 1185787: From Abstract Algebra class.
Consider Z9 - { [ 0 ] } with respect to multiplication [ a ] [ b ] = [ ab ] modulo 9 .
( a ) Let G be the set of all [ a ] in Z9, - { [ 0 ] ) that have multiplicative inverses . Find G.
( b ) Prove that G is a group .
( c ) Prove or disprove : G is a cyclic group.
For this exercise I tried to find a generator but I couldn’t.
( d ) Find all distinct subgroups of G.
Click here to see answer by ikleyn(52747)

Question 1185788: For the geometric series 1 - 2/3 + 4/9 - 8/27 ... , find S 8
Click here to see answer by ikleyn(52747)

Question 1185808: Find the indicated term in each of the following expansions.
a) (2+x)^10,7th term
b) (y-2x)^10,5th term
Click here to see answer by ikleyn(52747)

Question 1185806: Find the non-zero values of a and b for which (2x-a)^3 = 8x^3 - bx^2 + 3/2bx - a^3.
Click here to see answer by Edwin McCravy(20054)

Question 1185805: Obtain,in ascending powers of x,the first 4 terms in the expansion of (2-x/2)^7. Hence find the value of (1.995)^7 correct to 4 decimal places
Click here to see answer by greenestamps(13195)

Question 1185804: Find,in ascending powers of x,the first 4 terms in the expansion of
.
Click here to see answer by Edwin McCravy(20054)

Question 1185941: 1.explain how to determine the geometric mean between 16 and 36.
Click here to see answer by josgarithmetic(39613)

Question 1185941: 1.explain how to determine the geometric mean between 16 and 36.
Click here to see answer by Theo(13342)

Question 1185941: 1.explain how to determine the geometric mean between 16 and 36.
Click here to see answer by ikleyn(52747)

Question 1185962: In the expansion of (x^3 - 2/x^2 ) ^10, find the term in x^10, find the coefficient of 1/x^5, find the term independent of x.
Click here to see answer by greenestamps(13195)

Question 1185962: In the expansion of (x^3 - 2/x^2 ) ^10, find the term in x^10, find the coefficient of 1/x^5, find the term independent of x.
Click here to see answer by ikleyn(52747)

Question 1185961: Expand (1/2-2x)^5 up to the term in x^3. If the coefficient of x^2 in the expansion of (1+ax+3x^2)(1/2-2x)^5 is 13/2, find the coefficient of x^3.
Click here to see answer by greenestamps(13195)

Question 1185943: 1.the geometric mean between the first two terms is 32.if the third term is 4.find the first term
Click here to see answer by MathLover1(20849)

Question 1185943: 1.the geometric mean between the first two terms is 32.if the third term is 4.find the first term
Click here to see answer by ikleyn(52747)

Question 1185943: 1.the geometric mean between the first two terms is 32.if the third term is 4.find the first term
Click here to see answer by greenestamps(13195)

Question 1186053: This a Abstract Algebra class
Let G=⟨a⟩ be a cyclic group of order10. Define φ:Z→G by φ(n)=a^n for all n∈Z. Assume that φ is a homomorphism. Find kerφ.
Click here to see answer by ikleyn(52747)

Question 1186097: More than half of the students were excited about the project. In fact, 8/9 were excited. If 10 students were not excited about the project, how many students were excited?
Click here to see answer by Alan3354(69443)

Question 1186163: A 25 kg child sits in a swing that is attached to ropes 1.6 m long. Find the potential energy of the child relative to his lowest position when the ropes (a) are horizontal, (b) are vertical, and (c) make 30° with the horizontal
Click here to see answer by ikleyn(52747)

Question 1186054: This for a Abstract Algebra class
Assume that φ is a homomorphism from the group G to G′. Prove that if K is any subgroup of G′, then φ−1(K) = {a ∈ G | φ(a) ∈ K} is a subgroup of G.
Click here to see answer by robertb(5830)

Question 1186196: Solve |5+x| > 7-3x.
Solve |x-2| - 3 ≤ 1.
Click here to see answer by ikleyn(52747)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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