brea
Most popular questions and responses by brea
chemistry
Write molecular, ionic, and net ionic equations. AgNO3(aq) + KBr(aq) >
asked on June 20, 2011 
Statistics
Suppose a tire manufacturer wants to set a mileage guarantee on its new XB 70 tire. Life tests revealed that the mean mileage is 47,900 miles and the standard deviation is 2,050. The manufacturer wants to set the guaranteed mileage so that no more than
asked on November 24, 2011 
chemistry
A patient received 2.0 g of NaCl in 8 hours. How many milliliters of a 0.40% (m/v) NaCl (saline) solution were delivered?
asked on May 30, 2018 
Chemistry
Use the following balanced equation. 3Sr(OH)2 + 2H3PO4 > 6H20 + Sr3(PO4)2 How many mL of 0.10 M Sr(OH)2 are required to react with 30 mL of 0.30 M H3PO4?
asked on June 20, 2011 
chemistry
Use the following balanced equation. 3Sr(OH)2 + 2H3PO4 > 6H20 + Sr3(PO4)2 How many grams of Sr3(PO4)2 could be produced by the complete reaction of 200 mL of 0.40 M H3PO4?
asked on June 20, 2011 
chemistry
Use the following balanced equation. 3Sr(OH)2 + 2H3PO4 > 6H20 + Sr3(PO4)2 20 mL of H3PO4 is required to react with 40 mL of a 0.15 M Sr(OH)2 solution. What is the molarity of the H3PO4 solution?
asked on June 20, 2011 
geography
my teacher says i should add more to this paragraph in my essay, so far i have: , "Buddhism is a nontheistic religion which means they do not believe in a God. Christians believe in the holy trinity, “Father, Son and the Holy Spirit”. Buddhist believe
asked on February 14, 2019 
math
the practice range at a golf course charges $4.00 for a bucket of 40 golf balls.At this rate,how much will a bucket of 100 golf balls cost?
asked on May 6, 2010 
Statistics
The lifetimes of batteries produced by a firm are known to be normally distributed with a mean of 100 hours and a standard deviation of 10 hours. What is the probability a battery will last between 110 and 120 hours?
asked on November 24, 2011 
algebra
an airplane flies with a constant speed of 960 km/h. How long will it take to travel a distance of 960 kilometers?
asked on December 21, 2014 
Chemistry
How many mL of a 6 M HCl solution are required to prepare 200 mL of a 0.2 M solution?
asked on June 20, 2011 
chemistry
Write molecular, ionic, and net ionic equations. HIO2(aq) + Ba(OH)2(aq) >
asked on June 20, 2011 
Statistics
The grades for Economics students at a large university are found to be normally distributed with a mean of 76 and a standard deviation of 4. What proportion of the students are expected to have a grade between 84 and 88?
asked on November 24, 2011 
chemistry
Write molecular, ionic, and net ionic equations. HIO2(aq) + Ba(OH)2(aq) >
asked on June 20, 2011 
Data Management
Determine the number of ways of selecting four letters, without regard for order, from the word 'parallelogram'
asked on October 18, 2010 
algebra
an airplane flies with a constant speed of 500 miles per hour. How long will it take to travel a distance of 1000 miles?
asked on December 22, 2014 
algebra
an airplane flies with a constant speed of 500 miles per hour. How long will it take to travel a distance of 1500 miles
asked on December 22, 2014 
Chemistry
Calculate the volume of 1.78M sulfuric acid that would be needed to neutralize 62.4 mL of a 2.09 M aqueous ammonia solution. The equation for the reaction is H2SO4(aq) + 2 NH3(aq) > 2 NH4(aq)+ SO4 ^2 (aq)
asked on April 16, 2012 
Chemistry
What is the molarity of a solution made by dissolving 10 grams of CaBr2 in enough water to make 400 mL of solution?
asked on June 20, 2011 
U.S HISTORY
HOW DID GREAT BRITAIN LIMIT THE POLITICAL AND ECONOMOIC FREEDOM OF THE THIRTEEN COLONIES?
asked on February 2, 2009 
Statistics
Assume there are two lakes containing trout and the weights of the trout in each lake are normally distributed. The distribution of trout weight in Lake A has a mean of 18 ounces with a standard deviation of 2 ounces. The distribution of trout weight in
asked on November 24, 2011 
6th grade
a model of a park was built on a scale of 1.5 centimeters to 50 meters.If the distance between two trees in the park is 150 meters,what is this distance on the model?
asked on May 6, 2010 
african american history
what is the argument of the book arc of justice?
asked on April 19, 2012 
algebra
an airplane flies with a constant speed of 500 miles per hour. How long will it take to travel a distance of 1000 miles?
asked on December 21, 2014 
algebra
Abigail roller skates with a constant speed of 8 miles per hour. How far can she travel in 1 1/2 hours?
asked on December 21, 2014 
Statistics
What will adding 50 to each score in a distribution do to the standard deviation of that distribution?
asked on November 24, 2011 
Health Information Technology
What does the term "ethics" mean? With what ethical standards must students comply? Are ethical standards higher for those in the medical profession? Should they be? Why or why not?
asked on May 2, 2011 
Math
rewrite the following in surd form : (16m squared) to the power of negative 3/4
asked on November 30, 2017 
algebra
a van moves with a constant speed of 40 miles per hour. How far can it travel in 2 hours?
asked on December 22, 2014 
algebra
grace roller skates with a constant speed of 13 km/h. How long will she take to travel a distance of 27 kilometers?
asked on December 21, 2014 
Chem
What is the pH of 0.0169 M sodium sulfite.
asked on March 31, 2014 
Statistics
A loaded die is tossed. Which of the following assignments could be made for the probabilities of each simple outcome. P(1) = .2 P(2) = .2 P(3) = .2 P(4) = .1 P(5) = .1 P(6) = .1 P(1) = .2 P(2) = .3 P(3) = .1 P(4) = .1 P(5) = .1 P(6) = .0 P(1) = .1 P(2) =
asked on November 24, 2011 
Statistics
9. A probability experiment has three possible outcomes, A, B, and C. If P(A) = 0.60 and P(B) = 0.20, then P(C) = ______.
asked on November 24, 2011 
Statistics
8. What will adding 50 to each score in a distribution do to the standard deviation of that distribution? will not change the standard deviation will increase it by 50 will increase it by 502 will not change it but will increase the variance
asked on November 24, 2011

math
hi, i'm not sure if you still need the answer but i'll still try to help. so to work out this question, you must find out how many fans will be packed in 8 hours. you know: 32 fans / hr to find this: = 32 x 8 (multiply by 8 because you have an 8 hour
posted on December 4, 2017 
English
Second one makes sense, first does not. I think it is better to use "the distance" instead of "it" as "it" is indefinite.
posted on November 30, 2017 
math
find the area of the circle base first. so: A = πr² = π(14)² = 615.7521601 = 615.75 (2d.p.) then, SA = 2πr² + 2πrh = 2(π(14)²) + 2π(14)(35) = 4310.265121 = 4310.27 (2d.p) A = 4310.27  615.75 (because we don't want to lid) = 3694.52 (and that
posted on November 30, 2017 
music
1.2 cm
posted on March 17, 2016 
business
Integrity
posted on September 19, 2015 
algebra
80 miles?
posted on December 22, 2014 
algebra
20 miles?
posted on December 22, 2014 
algebra
3 hours?
posted on December 22, 2014 
algebra
2 hours
posted on December 22, 2014 
algebra
idk can you just show me and tell me please
posted on December 22, 2014 
algebra
2 miles
posted on December 22, 2014 
algebra
I got 2
posted on December 22, 2014 
algebra
0.5
posted on December 21, 2014 
algebra
would it be 12 miles?
posted on December 21, 2014 
algebra
would it be an hour ms. sue?
posted on December 21, 2014 
Algebra 1B
I got the answer its b^2
posted on June 6, 2012 
6th grade
miranda enlarged a picture propotionally.Her original picture is 4 cm wide and 6 cm long.If the new,larger picture is 10 cm wide, what is its length?
posted on May 6, 2010