Friday
August 29, 2014

Posts by Daniel


Total # Posts: 813

SCience
The purpose of surfactant in the lungs is to A. facilitate lung expansion. B. bind oxygen from the air. C. improve lung blood flow. D. remove pollutants in the air. I believe it's A
July 23, 2014

trigonometry
Find the distance the container is lifted as the winch is rotated through an angle of 5pi/6 radian and a having a radius of 6 in
July 23, 2014

math
A school has purchased a large field that has a square area of 19,500 ft2. What is the approximate length of each side of the square area? Round your answer to the nearest foot. a. 140 ft c. 142 ft b. 139.64 ft d. 139 ft
July 17, 2014

math
help please The measures of the sides of a right triangle form an arithmetic progression whose difference is 1. Find the measure of the hypotenuse
July 14, 2014

math
Help please find three consecutive numbers, which are in arithmetic progression whose sum is 39
July 14, 2014

math
help please 1. log2 x=1/2 2. log√x=-1 3. ln⁡x=1+ln⁡(x+1)
July 14, 2014

sci
how is it that kinetic and potential energy involve roller coasters and electricity.
June 16, 2014

algebra
10
June 15, 2014

HELP MATH 5th grade
if i answered it D + 6 + (3x4) then i do not need the 5 -- it says which number 3 4 5 6 is not needed
May 13, 2014

HELP MATH 5th grade
so which number is not needd to solve the problem 3 or 5
May 13, 2014

HELP MATH 5th grade
The question says the letter d
May 13, 2014

HELP MATH 5th grade
Sam has 3 pets. Monday she uses d cans of pet food. Tuesday she uses 6 cans Wednesday Thursday and Friday uses 4 cans each day How many cans does she use during thse 5 days? which number is not needed to solve problem? 4 3 5 6 - please explain
May 13, 2014

Math help practice test
Typo during the 5 days not 3 days
May 13, 2014

Math help practice test
Harvey has 3 pets. On Monday she uses d cans of pet food. On Tuesday she used 6 cans and wed thurs fri she uses 4 cans each day. How many cans does she use during these 3 days. Which number is not needed to solve this problem. 4 3 5 6 And why?
May 13, 2014

ss
and my answer is a
May 2, 2014

ss
the questiion can u check the answer
May 2, 2014

ss
my answr is A
May 2, 2014

ss
help i have a question i need help with and can you check my answer 10. most of Venezuela's population lives (1 point)
May 2, 2014

s.s
i just made a A never mind
April 30, 2014

s.s
oh now
April 30, 2014

s.s
mrs sue can you cheak my work please
April 30, 2014

Math
What mean (m) I don't anderstend.
April 24, 2014

Math
Jance spend from 7pm to 9pm doing her homework. She spend 3 times as mach time on her english project as she did on math. the science homework took twice as long as her math homework. How meny minutes did she spend on her science homework?
April 24, 2014

physics
In a water park, people walk up a ramp before diving into the water below. If they cover a horizontal distance of 100 meters before diving down 50 meters, what is the angle made by the ramp with the ground?
March 25, 2014

CALCULUS ECONOMICS
First question: Q=440 and P=660. Second question: s=100
March 13, 2014

physics
How to calculate the force required to move a 6.12Kg weight up a 10degree friction rig? I have done experiments on the friction rig, adding weight until the sliding weight moved, but the calculated results do not match up. Can anyone help?
February 22, 2014

Statistics
2. On a certain anxiety questionnaire, the population is known to have a mean of 12 and a standard deviation of 2.3. A higher score represents higher levels of anxiety. Participants in a new relaxation program complete the questionnaire after completing the program, and have a...
February 19, 2014

Statistics
1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company is 25 with a standard deviation of 4. ...
February 19, 2014

Algebra
Solve for x: h=(k/4)(x-3L) Solve for B: v-6Bxk=7B Solve for S: z+(1/7)sk=(1/6)yk^2 Solve for x: 3F=10hx+10hv+10xv
February 13, 2014

algebra & trigonometry
Thank you Steve.
February 11, 2014

algebra & trigonometry
The area of a rectangle is 28 square inches. The length is 8 more than thrice the width. Find the length and the width. Thanks
February 11, 2014

algebra & trigonometry
x(2x+5)=12 2x^2+5x-12=0 (x+4)(2x-3)=0 2x-3=0 2x=3 x=3/2 3/2(2(3/2)+5)=12 3/2(3+5)=12 3/2(8)=12 24/2=12 12=12 width=3/2 length=8
February 11, 2014

algebra & trigonometry
Is w=-4 the correct answer? thanks
February 11, 2014

algebra & trigonometry
The area of a rectangle is 12 square inches. The length is 5 more than twice the width. Find the length and the width. Thanks
February 11, 2014

algebra & trigonometry
Thanks Steve.
February 11, 2014

algebra & trigonometry
The sum of two numbers is 210. If one number is the square of the other, find the set of numbers. Thanks
February 11, 2014

courtesy
Thank you Writeacher.
February 11, 2014

courtesy
How can i thanks someone for their help?
February 11, 2014

algebra and trigonometry
Thank you Steve
February 11, 2014

algebra and trigonometry
Thank you Steve.
February 11, 2014

algebra and trigonometry
At a college function, a total of 180 tickets were sold. The tickets were priced at $5, $10, and $15, and the money collected that day was $1,900. The sum of the numbers of $5 and $15 tickets sold was twice the number of $10 tickets sold. Find the number of each type of ticket...
February 11, 2014

Statistics
I found the mean but i do not know what the scores are. help. thanks
February 10, 2014

Statistics
Age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b. Based on the data you ...
February 10, 2014

Statistics
My bad. Thanks.
February 10, 2014

Statistics
Age at onset of dementia was determined for a sample pf adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b. Based on the data you ...
February 10, 2014

algebra & trigonometry
Thanks Steve.
February 9, 2014

algebra & trigonometry
The profit of an organization is calculated by the function P(x) = x2 – 4000x + 7800000, where x is the number of units sold. If the net profit is 3800000, find the number of items sold. Thanks
February 9, 2014

algebra & trigonometry
At a grocery store, the number of customers arriving per hour is shown by the function f(x) = 2x + 1. Find the number of customers that arrived in the 6th hour. Thanks
February 9, 2014

algebra & trigonometry
Jerry wants to purchase some items whose cost function is , where x is the number of items. If Jerry spends between $50 and $80, find the minimum and maximum number of items that he can purchase. Thanks
February 9, 2014

algebra & trigonometry
Jerry wants to purchase some items whose cost function is , where x is the number of items. If Jerry spends between $50 and $80, find the minimum and maximum number of items that he can purchase.
February 9, 2014

algebra & trigonometry
A person wants to purchase two types of items, A and B, from a shop. She has $200 to spend, and she has to purchase at least 10 items. If the price of one unit of each A and B is $10 and $30, respectively, represent this problem graphically. Thanks
February 9, 2014

algebra & trigonometry
A school wants to purchase some round tables and some rectangular tables. The costs of one round table and one rectangular table are $20 and $25, respectively. The school wants to spend at most $1,000. Represent this problem for the purchase of x round tables and y rectangular...
February 9, 2014

algebra & trigonometry
A person wants to purchase two types of items, A and B, from a shop. She has $200 to spend, and she has to purchase at least 10 items. If the price of one unit of each A and B is $10 and $30, respectively, represent this problem graphically.
February 9, 2014

algebra & trigonometry
A patient is not allowed to have more than 300 milligrams of cholesterol per day from a diet of eggs and meat. Each egg provides 150 milligrams of cholesterol. Each ounce of meat provides 100 milligrams of cholesterol. Write an inequality that describes the patient’s ...
February 9, 2014

algebra & trigonometry
The sum of three whole numbers is 7. The second number is 1 more than the twice of the third number. The sum of first and third number is 3 less than the second number. Find all the three numbers. Thanks
February 9, 2014

algebra & trigonometry
The sum of three whole numbers is 7. The second number is 1 more than the twice of the third number. The sum of first and third number is 3 less than the second number. Find all the three numbers. Thanks
February 9, 2014

density and pressure
calculate the mass of air in a room measuring 5m*8m*10m if the density of air is 1.3kg/m cube
January 28, 2014

physics
calculate the mass of air in a room measuring 5m*8m*10m if the density of air is 1.3kg/m cube
January 28, 2014

5th grade math help
trying to check my sons answers "5 3/5 " divided by "2/3" How do i do this mom cant remember
January 13, 2014

Statistics
Blossom’s Flowers purchases roses for sale for Valentine’s Day. The roses are purchased for $10 a dozen and are sold for $20 a dozen. Any roses not sold on Valentine’s Day can be sold for $5 per dozen. The owner will purchase 1 of 3 amounts of roses for ...
January 10, 2014

Maths
Blossom’s Flowers purchases roses for sale for Valentine’s Day. The roses are purchased for $10 a dozen and are sold for $20 a dozen. Any roses not sold on Valentine’s Day can be sold for $5 per dozen. The owner will purchase 1 of 3 amounts of roses for ...
January 9, 2014

Physics
A proposed space station includes living quarters in a circular ring 46.5 m in diameter. At what angular speed should the ring rotate so the occupants feel that they have the same weight as they do on Earth?
December 24, 2013

Physics
A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 19.0 m. What is the kinetic energy of the mass at the point A on the loop? What is...
December 24, 2013

science help needed quick fools
how do the circulatory and endocrine systems work together to help maintain homeostasis
December 20, 2013

Trigonometry
At a point on a level ground, the angle of elevationof a mountain top B is 42deg36min. At a pointD350 meters nearer the mountain, the angle of elevation is 51deg 43 min. Find the height of the mountain?
December 1, 2013

Chemistry
Weak polyprotic acids are normally added to Coca Cola to lower its pH to about 2.5 and impart tartness? Show that a two litter cocacola bottled drink that contains 0.057 to 0.084 percent of 75 percent of phosphoric acid by mass,meets this ph requirement. Pka1= 2.12
November 29, 2013

Chemistry
Weak polyprotic acids are normally added to Coca Cola to lower its pH to about 2.5 and impart tartness? Show that a two litter cocacola bottled drink that contains 0.057 to 0.084 percent of 75 percent of phosphoric acid by mass,meets this ph requirement. Pka1= 2.12
November 29, 2013

Algebra
Thanks Ms Sue! I see what I did wrong! Thanks!
November 5, 2013

Algebra
What is the best estimate for 3 + (-14.9)(-2.3)? a 36 b 31 c 48 d 33 I came up with 36 but my teacher counted it wrong. I reworked it but still come up with A-36. What am I doing wrong?
November 5, 2013

english grammar
We saw the governor and mayors in a meeting. is governor capitalized?
October 16, 2013

mom needs math help
can anyone in simplistic terms explain difference between HISTOGRAM and BAR GRAPH i need to explain it to a ten year old.
October 9, 2013

MATH help please
Identify the missing info that would be necessary to solve the following which type of graph would be more appropriate to represent the number of inches of rain during a 6 - week period a bar graph or a line graph? AND WHATS MISSING
October 4, 2013

math help please
Identify the missing info that would be necessary to solve the following which type of graph would be more appropriate to represent the number of inches of rain during a 6 - week period a bar graph or a line graph? what is the missing info
October 3, 2013

Mr Pursley Help
WHY is the question
October 3, 2013

math HELP
whats the missing information
October 3, 2013

math HELP
why
October 3, 2013

math HELP
Identify the missing info that would be necessary to solve the following which type of graph would be more appropriate to represent the number of inches of rain during a 6 - week period a bar graph or a line graph?
October 3, 2013

chemistry
If a gas sample has a pressure of 31.3 kPa at 0.00°C, by how many degrees Celsius does the temperature have to increase to cause the pressure to double?
October 2, 2013

5th grade math help
graph each integer on a number line -3
October 2, 2013

Pre Algebra
208/1000=x/125 How do you solve it or can you
September 29, 2013

math
In a class of 60 student,the number of student who passed biology is 6 more than the number of student who passed chemistry.Every student passed atleast one of the two subject and 85 student passed both subjects
September 12, 2013

math last one help
a bead shop sells wooden beads for 3 dollars each and glass beads for 7 dollars each Write a function rule to represent the total selling price of wooden (w) and glass (g) beads.
September 10, 2013

5th grade math help
a bead shop sells wooden beads for 3 dollars each and glass beads for 7 dollars each Write a function rule to represent the total selling price of wooden (w) and glass (g) beads. Is it W t G = 10 ??? or 3 t 7 = 10 ???
September 10, 2013

math last one help
sally drew a factor tree of a composite number and ended up with 4x4x5x5x3 as the prime factorization. explain what is wrong with this factorization 1. what is the correct prime factorization? 2. what is the composite number that was factored?
August 29, 2013

Ms Sue
why is it not a composite number
August 29, 2013

5th grade math help
my mommy and daddy cant explain explain what is wrong with the reasoning number 5 is a composite number because it has the factors 2 and 2.5 i know its a prime number but i cant explain the answer to the question above.
August 29, 2013

math
mean = ∑x/n 6 = (x+y+z)/3 9 = (x+y+z+t+u+v+w)/7 63 = (x+y+z+t+u+v+w) 18 = (x+y+z) mean = (63-18)/4 =
August 24, 2013

math
C(11,0) + C(11,1) + C(11,2) + C(11,3) the problem says "up to 3"
August 15, 2013

physics
A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 22° C when it was installed. What is its change in length when the temperature drops to a frigid -37° C?
July 25, 2013

physics
a train's stopping distance even when full emergency brakes are engaged is 1.3 km. If the train was travelling at an initial velocity of 90km/h(forward), determine its acceleration under full emergency braking
July 3, 2013

math
A kayaker paddles across a river at a constant speed of 4 miles per hour and a bearing of N 60 degrees E. Which current vector results in the kayaker's actual speed being 5.9 miles per hour and the kayakers actual direction being N 70 degrees E.
July 3, 2013

math help
question says choose which is greater or are they equal or not enough info fifty percent can be represented by n --- 50 a. n b. 45 answer is b is greater please tell me why
June 26, 2013

math 4 grade
question which is greater - are they equal - or not enough info 18K 17K the answer says its not enough info but 18 is always bigger than 17
June 26, 2013

math help
this is the problem exactly you must choose which is bigger or equal the answer shows the second is greater why
June 26, 2013

math help
the land area of a country with 20 people per square kilomoter or the land area of a country that measures 500,000 square kilometers which is bigger and how did you determine this?
June 26, 2013

math 4th grade
the land area of a country with 20 people per square kilomoter or the land area of a country that measures 500,000 square kilometers can anyone explain how to do this
June 26, 2013

math 4th grade
the land area of a country with 20 people per square kilomoter or the land area of a country that measures 500,000 square kilometers can anyone explain how to do this
June 26, 2013

math 4th grade
the land area of a country with 20 people per square kilomoter or the land area of a country that measures 500,000 square kilometers can anyone explain how to do this
June 26, 2013

math
Kate bought a new car priced at $21,300 with 15% down and the balance in equal payments over 4 years at 7% compounded monthly. Determine the size of the monthly payments? The answer is $433.65 please show me the steps
June 10, 2013

petroleum engineering physics
Vector A has a magnitude of 5.00units,and B has a magnitude of 9.00units.The two vectors make an angle of 50.0degrees with each other .Find A.B.
June 9, 2013

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