Friday

December 2, 2016
Total # Posts: 743

**Chemistry**

How would I make a 93.1% w/w solution from 96% sulfuric acid using volume

*November 23, 2016*

**Chemistry**

I need to prepare 500 ml of a 37% w/w solution of sulfuric acid using 96% sulfuric acid in deionized water. I have been shown a bunch of different ways and they all give a different answer and I'm getting frustrated

*October 12, 2016*

**science**

Pam

*September 13, 2016*

**science**

A pipe of diameter 80mm is fitted with a branch section into which fit two pipes of equal diameter. If it is desired that the velocity remain constant throughout, determine the required diameter of each of the branch pipes.

*September 13, 2016*

**Math**

Posted by Pam on Thursday, July 21, 2016 at 10:41am. One day 3/8 of the students in Jack's class ate toast for breakfast. Another 1/8 of the students ate oatmeal. Jack added the fractions and found the sum was 7/8. Which statement best describes the sum 7/8? A) It is ...

*July 22, 2016*

**Math**

I am having a little trouble figuring this problem out if someone could help I would appreciate it. Question: The angle of elevation to the top f a tree sighted from ground level is 19degrees. If the observer moves 60 ft closer, the angle of elevation from ground level to the ...

*July 21, 2016*

**Math**

Posted by Pam on Thursday, July 21, 2016 at 10:41am. One day 3/8 of the students in Jack's class ate toast for breakfast. Another 1/8 of the students ate oatmeal. Jack added the fractions and found the sum was 7/8. Which statement best describes the sum 7/8? A) It is ...

*July 21, 2016*

**Math**

Here is some additional details about this question. Determine whether sum is reasonable. Compare addends to benchmark 0 and 1/2. Thanks!

*July 21, 2016*

**Math**

One day 3/8 of the students in Jack's class ate toast for breakfast. Another 1/8 of the students ate oatmeal. Jack added the fractions and found the sum was 7/8. Which statement best describes the sum 7/8? A) It is reasonable because 1/2 + 0 = 1/2. B) It is reasonable ...

*July 21, 2016*

**Math**

Thank you Ms. Sue!

*July 5, 2016*

**Math**

Pen has 1/2 cup and 1/8 cup measuring cups. What are two ways he could measure out 1 3/4 cups of flour? Plz help thanks!

*July 5, 2016*

**algebra**

solve for x Inx-In5=0 x=5 n=0

*June 20, 2016*

**homework **

Set up a integral and evaluate it. y=x^8/9, y=1 and x=0 about the y-axis

*April 28, 2016*

**Physics Rolling Motion!!**

A spherically symmetric object with radius R= 0.51m and mass of M= 3.5kg rolls without slipping accross a horizontal surface with velocity of V = 4.4m/s. It then rolls up an incline with an angle of 30 degrees and comes to rest a distance d = 2.2m up the incline, before ...

*April 27, 2016*

**PHYSICS Momentum!! Collision HELP**

A ball A of mass .202 kg is moving at a velocity of 2.0 m/s toward a ball B that is at rest. (a) Calculate the initial momentum for Ball A and Ball B. (b) Calculate initial Kinetic energy for Ball A and Ball B. My doubt since its asking for initial moment only, can I simply ...

*April 12, 2016*

**PHYSICS Collision of two Balls Momentum!! HELP**

A ball A of mass .202 kg is moving at a velocity of 2.0 m/s toward a ball B that is at rest. (a) Calculate the initial momentum for Ball A and Ball B. (b) Calculate initial Kinetic energy for Ball A and Ball B. My doubt since its asking for initial moment only, can I simply ...

*April 11, 2016*

**Chemistry**

How do I make 500ml of a 0.3% chlorine dioxide solution from 6.4% tablets?

*March 31, 2016*

**Biology**

Chloroplast

*March 31, 2016*

**Chemistry**

How do I make a 500ml amount of a 0.3% aqueous solution of chlorine dioxide

*March 31, 2016*

**Math**

What is difference between cube and square prism?

*March 22, 2016*

**Chemistry**

How do I prepare 1liter of a 93.1% w/w solution of sulfuric acid using 98% sulfuric acid and water?

*March 14, 2016*

**Math**

Thank you Ms. Sue.

*February 12, 2016*

**Math**

Got it..its B

*February 12, 2016*

**Math**

I think it's A

*February 12, 2016*

**Math **

Eli has 36 books. He places the same number of books on each of 9 shelves. Which equation below could be used to find the number of books on each shelf? A 36/ ___=6 B ___ x9=36 C 36/6 = ___ D 6x9=____ Plz help..thanks

*February 12, 2016*

**Statistics **

A population =100 and sd=25. A sample (n=150) has X=102. Using 2 tails of the sampling distribution and the .05 criterion. What is the critical value? Is the sample in the region of rejection? What does this indicate about the likelihood of this sample occurring in this ...

*February 4, 2016*

**statistics**

You measure 64 children , obtaining a X of 57.28 . The mean is 56 and sd is 8 Slug says that bc this X is so close to the mean of 56 , this sample could hardly be considered gifted. A. Perform the appropriate statistical procedure to determine whether he is correct B. In what ...

*January 31, 2016*

**statistics**

You measure 64 children, obtaining a X of 57.28. Slug says that bc this X is so close to the mean of 56, this sample could hardly be considered gifted . A. Perform the appropriate statical procedure to determine whether he is correct. B. In what percentage of the top scores is...

*January 30, 2016*

**statistics**

Company stock price of which has risen so that over the past ten trading days , it's mean selling price is $ 14.89 . Over the years the mean price of the stock has been 10.43 ( sigma = 5.60 ) you wonder if the mean selling price is over the next ten days to go higher . ...

*January 30, 2016*

**statistics**

For the data 95 10 7 9 10 11 8 12 7 6 9, find the raw scores that correspond to the following : z= +1.22; z= -0.48

*January 30, 2016*

**Math-fractions**

Thank you

*January 29, 2016*

**Math-fractions**

A book shelf is 3 1/2 feet long. Each book on the shelf is 5/8 wide. How many books will fit on the shelf? I don't know how to turn fractions into feet. Help please

*January 29, 2016*

**statistics**

Identify the conditions of the independent variable , the dependent variable , their scales of measurement , which measure of central tendency and variability to compute and which scores you would use in the computation . We test whether participants laugh longer ( in seconds...

*January 23, 2016*

**statistics**

Ms.Sue What 2 aspects of the data determine which measure of central tendency use?

*January 21, 2016*

**statistics**

What 2 aspects of the data determine which measure of central tendency use?

*January 21, 2016*

**statistics/ mean median mode**

What 2 aspects of data determine which measure of central tendency to use ?

*January 19, 2016*

**statistics/ mean median mode**

Describe one personal score for each type of measurement scale (ratio, interval , ratio, ordinal) how the score relates/related to the appropriate measure of central tendency (mean, mode, median ). Miles per month that you spend commuting GPA of several terms/year Average ...

*January 19, 2016*

**statistics/ mean median mode**

1. What two aspects of the data determine which measure of central tendency to use? 2. Why is it best to use the mean with a normal distribution ? Questions are from chapter 4 Basic Statistics for the Behavioral Sciences 7th edition

*January 19, 2016*

**statistics **

1. What two aspects of data determine which measure of central tendency to use? 2. Why is it best to use the mean with a normal distribution ?

*January 19, 2016*

**Statistics **

The intermediate answers from some calculations based on whole number scores are X= 4.3467892 and Y= 3.3333. For the next step, after rounding, what values of X and Y do we use?

*January 17, 2016*

**STATISTICS**

Describe one personal score for each type of measurement scale (ratio, interval, ordinal, and ratio). Explain how the personal score relates/related to the appropriate measure of central tendency (mean,mode, median). Miles per month spent commuting GPA of several terms Average...

*January 15, 2016*

**geomtery**

IN ABC, m<BAC =3x+9, m<ABC =8x+11, and m<BCA= 5x-8. Find the measures of <1,<2,<3. SHow your woek for solving x and finding each angle measure clearly. IN ABC, m<BAC =3x+9, m<ABC =8x+11, and m<BCA= 5x-8. Find the measures of <1,<2,<3. SHow ...

*December 21, 2015*

**Spanish 2**

Thank you

*December 16, 2015*

**Spanish 2 **

Does the paragraph show both preterito and imperfecto. Cuando yo tenia unos diez anos yo solia pertenecer a Girl Scouts. Nos conocimos una vez a la semana old miercoles en son Iglesia del barrio. Nos enteramos de la peoniesa, la artesania, la religion, ayudar a los menos ...

*December 16, 2015*

**Spanish 2**

Did I do it correctly ?

*December 16, 2015*

**Spanish 2**

In Spanish

*December 16, 2015*

**Spanish 2**

How to write a paragraph with both preterito and imperfecto. When I was about ten years old I used to belong to Girl Scouts. We met once a week on Wednesdays evenings at are neighborhood church. We learn the pledge, crafts, religion, and help those less fortunate. I even sold ...

*December 16, 2015*

**Algebra**

Write an equation of the line containing the given point and parallel to the given line. (6, -6); 7x-2y=5

*December 9, 2015*

**math**

Your taxi charges $3.00 for the first one-fourth of a mile and $0.50 for each additional one quarter of a mile. How much will the charge be if you have driven for 1.75 miles?

*October 14, 2015*

**science**

A cubic container full of hot water at a temperature of 90 °C is completely lagged with an insulating material of thermal conductivity 6.4x10-4 Wcm-1K-1 (6.4x10-2 Wm-1K-1). The edges of the container are 1.0 m long and the thickness of the lagging is 1.0 cm. Estimate the ...

*October 14, 2015*

**science**

An iron cylinder with radius 1.0 cm and length 25 cm has one end held at 250°C and the other at 20°C. Find the heat-flow rate through the cylinder

*October 8, 2015*

**grammar essentials**

How would you change this sentence- The family history includes myocardial infarction in the father, who relates he died from this at an early age.

*October 2, 2015*

**Physics**

A concrete sidewalk is constructed between two buildings on a day when the temperature is 25 0C. The sidewalk is 6 m long and consists of two slabs each 3 m in length and of negligible thickness. What would be amount of buckling (displacement) upwards that will occur in the ...

*September 27, 2015*

**Algebra**

Use method II to simplify the following complex rational expression. 5-13/x-2 divided by 6/x-2-7. I'm not sure if this is the proper set up, but it's suppose to be a division on top and bottom. Please if someone could help

*September 26, 2015*

**Math**

Thanks for ur help. Really appreciated!

*September 22, 2015*

**Math**

Thanks for ur help. Really appreciated!

*September 22, 2015*

**Math**

Draw 5 square and divide each square into eighths. Right?

*September 22, 2015*

**Math**

8 students share 5 square pieces of cake equally. Draw to show how much each person gets.

*September 22, 2015*

**Math**

Determine the value or values of the variable for which the expression is defined. 3/x-5

*September 14, 2015*

**Math**

1 hr = 60minutes 1 day = 24 hrs = 1440 minutes in a day 300000/1440 = 208.33 ?

*September 7, 2015*

**Math**

On what day in the year 1943 was the year 300 000 minutes old?

*September 7, 2015*

**Math**

Sondra has a lot of cats (which have four legs) and parakeets (which have two legs) but no other pets. Among her pets, Sondra counts 57 heads and 176 legs. How many cats does she have?

*September 7, 2015*

**Math**

Draw the graph n < 4, with the constraint n > 0.

*September 5, 2015*

**math**

I know you have to group this problem but I'm not sure how to solve this, if someone could step by step I would appreciate it. 6x^3 +14x^2-27x-63

*September 1, 2015*

**Algebra**

A rock is thrown upward with a velocity of 15 meters per second from the top of a 49 meter high cliff, and it misses the cliff on the way back down. When will the rock be 3 meters from the water, below? Round your answer to two decimal places.

*August 29, 2015*

**Math**

Which inequality represents this situation? Ari works h hours each day. He earns $21 per hour. Ari earns less than $150 a day. How many hours does he work each day? a. 21h > 150 b.21 + h < 150 c.h/21 < 150 d.21h < 150

*August 10, 2015*

**calculus**

when the line x = 9 please

*July 22, 2015*

**calculus**

find volumes of solids generated by revolving the regions bounded by the graphs of the equations about the given lines. y=square root of x y=0 x=3

*July 22, 2015*

**Business Stats**

73.5-76=2.5/7 = 0.357

*July 19, 2015*

**algebra **

A company that manufactures bikes has a fixed cost of $8,000. It cost $800 to produce each bike. The total cost for the company is a sum of fixed cost and variable costs. Write the total cost, C, as a function of the number of bikes produced x then find C(70). Find the cost ...

*July 12, 2015*

**Math**

An invoice for a camcorder that cost $1210 is dated August 2, with sales terms of 4/10 EOM. If the bill is paid on September 5, how much is due for the net amount due?

*July 1, 2015*

**algebra**

In mixing a weed killing chemical a 40% solution of the chemical is mixed with an 85% solution to get 20 L of a 60% solution. How much of each solution is needed?

*May 9, 2015*

**math**

Given z(t) = square of t +1− t^3 , find z(2).

*April 13, 2015*

**chemistry**

What volume of a 0.553 M calcium hydroxide solution is needed to exactly neutralize 7.34 grams of KHP

*April 9, 2015*

**UNISA**

he earns 0.8% interest per month while the amount is less than R70000 and 0.7% interest per month if the amount is equal to or more than R70000, the interest is added to the total amount, calculate how many months he will have to save

*April 7, 2015*

**Chemistry **

Nitrogen dioxide reacts with carbon monoxide to produce nitrogen monoxide and carbon dioxide in the reaction, . The first step in the reaction is proposed to be two NO2 molecules colliding to form NO3 and NO. The NO3 intermediate then reacts with CO to form CO2. What is the ...

*February 16, 2015*

**Physics**

Does the potential inside a hollow condutorchange?

*February 10, 2015*

**Math**

If a spherical tanl 4m in diameter can be fillef with a liquid for $900, find the cost to fill a tank 12m in diameter. The cost to fill the 12m tank is $__.

*January 22, 2015*

**math**

-3n-(-1)=29 My answer is n=9.9 I doubt plZ help. Thank you,

*November 2, 2014*

**math**

At which grade level is it most appropriate for children to group by more than one attribute?

*October 19, 2014*

**social studies**

What kind of industry is diamond ring?

*October 4, 2014*

**physics**

A chunk of Martian rock falls off of a cliff and drops 47.7 m in 5.00 s. What is the acceleration due to gravity on the surface of Mars?

*September 29, 2014*

**algebra**

Thank you very much for your time and help!

*September 22, 2014*

**algebra**

105/(-20+15) ------------------- 45/(-9)+12 Plz help me to solve this question. Thanks!

*September 22, 2014*

**math 4th grade**

6×7381=

*September 18, 2014*

**Math**

Write the opposite of 0 Celsius and 32f temperature as integer. Plz help

*September 6, 2014*

**math**

Find the geometric series whose second term is 1.5 and the fifth term is 0.1875

*August 19, 2014*

**Algebra**

The sum of two numbers is 9. Four times the larger number plus three times the smaller number is 48. Find the numbers. Thank you

*August 12, 2014*

**Algebra**

Two angles are complementary. Their difference is 50^*. Find the angles.

*August 12, 2014*

**Math**

A basketball player scored 18 times during one game. He scored a total of 35 points, two for each two point shot and one. For each free throw. How many two point shots did he make? How many free throws?

*August 12, 2014*

**Algebra**

The plans for a she'd call for a rectangular floor with a perimeter of 276ft. The length is two times the width. Find the length and the width

*August 10, 2014*

**Math**

An architect has allocated a rectangular space of 275ft^2 for a square dining room and a 14ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.

*August 5, 2014*

**Math**

The number of tickets sold each day for an upcoming performance of Handel,s Messiah is given by N(x)=-0.4^2+8.8x+10, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?

*August 5, 2014*

**Math**

A model rocket is launched with an initial velocity of 164ft/sec. It's height h, in feet, after t seconds is given by the formula h=164t-16t^2. After how many seconds will the rocket first reach a height of 400ft?

*August 2, 2014*

**Math**

An architect has allocated a rectangular space of 240ft^2 for a square dining room and a 14 ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.

*August 2, 2014*

**Algebra 2**

Find the exact value of cos 315 degrees. answers: 3/2, -1/2,2/2, -2/2

*May 19, 2014*

**Math**

dartboard is 16 inches bulls eye 6 inches

*May 19, 2014*

**Math**

Jeff has 12 coins that have a total value of $2.25.If there are only quarters and dimes, how many of each kinds are there?

*May 3, 2014*

**Math**

A patio was to be laid in a design with one tile in the first row,two tiles in the second row,three tiles in the third row, and so on. Mr Tong had 60 tiles to use. How tiles should be placed in the bottom row to use the most tiles?

*May 3, 2014*

**Math**

The book shelly is reading has 235pages. She has already read 110 pages. If she reads 25 pages a day from now on, how many more days will it take her to complete the book?

*May 3, 2014*