Answers edited by LM

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• Jennys great-grandmother is 90 years old. jenny is 12 years old. what percent of Jennys great grandmothers age Jennys age?
  
• Question #21725
  
• How do you simplify `-6/(5-sqrt11)`?
  
• Assuming a half-life of 1599 years, how many years will be needed for the decay of 16/15 of a given amount of radium-226?
  
• How much energy (in joules) is required to raise the temperature of 200g of liquid water from 20c to 50 c?
  
• What is an example of a rational function whose graph in the `xy`-plane has the lines `x=2, x=5`, and `y=3` as asymptotes?
  
• Question #3d1c5
  
• If tan theta = 2, what is cot theta?
  
• Is air a pure substance?
  
• How do you solve `-3y-1/8=-2 1/2`?
  
• Alan, Betty and Carol are applying for three different jobs in a company. The probability that Alan gets his job is 0.5; the probability that Betty gets her job is 0.75; the probability that Carol gets her job is 0.3. Can anyone solve this?
  
• Why are proteins not removed by nephrons in the kidney?
  
• What is the 40th term of the sequence 14, 9, 4, -1?
  
• Question #f87e3
  
• How do you evaluate `\ln e ^ { 8} - 7\ln e ^ { 3}`?
  
• Change to passive voice: Who did this?
  
• What is the simplest form of `sqrt(75x^5)/(sqrt(12xy^2))`?
  
• Question #216d6
  
• How do you evaluate `\frac { ( 3.00\times 10^ { 6} ) ( 2.0\times 10^ { - 3} ) } { 5.0\times 10^ { - 2} }`?
  
• Question #fb0a7
  
• Determine the mass, in grams, of a piece of this metal that has a volume of 15.3 cubic centimeters. Round your answer to the nearest tenth of gram? SHOW YOUR WORK
  
• What is the molar mass and the mass of 5.0 mol of iron(II) phosphate, `Fe_3(PO_4)_2`?
  
• Question #fd60d
  
• What is the Cartesian form of `(81,(24pi)/12)`?
  
• What is `(sqrt(5)+i)^6` in the form `a+bi`?
  
• Use an appropriate half-angle identity to find the exact value of sin(pi/12) = ?
  
• Question #e8f6b
  
• How do you solve `6^(3m+2)=1`?
  
• How do you solve the system of equations `-6x-10y=20` and `3x+5y=25`?
  
• How do you graph `f( x ) = \frac { x + 3} { x ^ { 2} - 2x - 63}`?
  
• If velocity is set to 2 m/s, (a=0) then the distance traveled = ________meters after 2 seconds, ___________ meters after 3 seconds, and ________ meters after 5 seconds?
  
• The width of a rectangle is one third of the length. If the perimeter is 32 cm, what is the width?
  
• How do you simplify `\frac { - 3} { 2} ( \frac { x ^ { 3} y ^ { - 6} } { x ^ { - 14} y ^ { - 3} z } ) ^ { 0}`?
  
• How do you add `\frac { 53} { 80} + \frac { 9} { 16}`?
  
• How do you solve `3v ^ { 2} + 8v - 35= 0`?
  
• Who was the poet who was famous for breaking spelling, grammar and punctuation rules?
  
• Question #8c57a
  
• Solve the following?: Using the punnet square between two organisms with genotype Ff and Ff, the probabilities for the genotype of the offspring is like the following: FF=25%, Ff=50%, ff=25% (continued on details)
  
• How to find the turning points from these quadratic equations?
  
• Factor Word Problem?
  
• What is the kinetic energy of a 2,000-kilogram boat moving at 5 m/sec?
  
• How do you determine whether a linear system has one solution, many solutions, or no solution when given 8x-5y= -17 and -2x+y=6?
  
• If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? Use the equation `h = –16t^2 + 64t + 4`?
  
• What are the asymptotes of `g(x)=0.5 csc x`?
  
• How do you graph `y=(x+2)/(x+3)` using asymptotes, intercepts, end behavior?
  
• Question #6c03c
  
• Question #65b8b
  
• (4x10^5)(1.5x10^4)?
  
• How do you solve `144k^2+7=71`?
  
• Which of the following is a negative integer if i= `sqrt(-1)`? A) `i^24` B) `i^33` C) `i^46` D) `i^55` E) `i^72`
  
• A drawer contains 5 brown socks and 4 blue socks well mixed. A man reaches the drawer and pulls out 2 socks at random. What is the probability that they will match?
  
• Question #015dc
  
• Question #79c72
  
• Question #a5024
  
• How do you factor `z^2+9z-90`?
  
• What is the binomial expansion of `(2x -3)^5`?
  
• Lyza used 24 ounces of spaghetti to make a recipe. If she wanted to make `1/4` as much, how much spaghetti should she use?
  
• Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week, Is she correct?
  
• If `/_A` and `/_B` are supplements and `m/_A = 150°`, what is `m/_B`?
  
• Question #79014
  
• What is the slope of a line that is perpendicular to `2x-5y=3`?
  
• In the conversion of sugar solution to alcohol, the chemical reaction obeys the law `A=10(1-e^(-0.231t))`, `t>=0` where t is the number of hours after the reaction commences, s is the sugar concentration (%), and A is the alcohol produced in litres.?