Saturday

February 13, 2016
Total # Posts: 144

**Algebra**

Is it possible to write a trinomial with degree 0? Explain. Thank you
*January 19, 2016*

**Math: Ratio**

My son had the following word problem and I don't know where to begin:The ratio in the school gym of boys to girls is 4:3. 160 boys left the gym and the ratio became 4:5. How many girls are in the gym?
*January 5, 2016*

**Algebra **

Write equation through given points (2/3,-1/5) and (1/4,7/10)
*December 16, 2015*

**Algebra**

It takes Tom five hours to travel 20 miles downstream. It takes him eight hours to travel the same distance back up stream. How fast is the boat? How fast is the current?
*December 15, 2015*

**Algebra **

Think we have it but want to make sure Write the standard form of the equation of each line using integers. 1. Y=-8/5x-4 Answer 8x+5y=-20 2. 4y=12+3x Answer -3x+4y=12 Thanks
*November 15, 2015*

**Math**

I believe the answer is...He put in 87.5% of what was meant. His error is 12.5%. That is what he is lacking.
*November 12, 2015*

**Algebra**

Determine whether the graphs of the given equation are parallel, perpendicular, or neither. Explain y=4x-2 -X+4y=0
*November 2, 2015*

**Algebra**

Confused mom thanks for your help. Find the X and Y intercepts of the line that passes through the given points (-6,4), (3,-5)
*October 31, 2015*

**Algebra**

Starting from 200 ft away, your friend rides his bike toward you and then passes by you at a speed of 18 ft/s. His distance d (in feet) from you t seconds after he started riding his bike is given by d=|200-18t |. At what time(s) is he 120 ft from you? I got t=4 4/9s but not ...
*September 21, 2015*

**Algebra**

Write a polynomial of least degree with real coefficients and with the root -6-8i. Write your answer using the variable x and in standard form with a leading coefficient of 1. Thanks, I have no idea!
*September 16, 2015*

**math**

Describe how to order 7,463, 74,633, 74,366 from least to greatest
*August 26, 2015*

**Algebra**

2m-nx=x+4 Solve for x
*August 24, 2015*

**Algebra**

A vehicle travels on a highway at a rate of 65 mi/h. How long does it take the vehicle to travel 25 mi?
*August 24, 2015*

**7 grade fraction word problem**

I am a mom that can't figure out how to help my daughter with this problem. Alicia is making pies. She uses 1 1/2 cups of sugar for every 2 pies. She has 5 1/4 cups left. How many more pies can she make? I think the answer is 7 pies but not sure how to teach her how do ...
*March 23, 2015*

**Science **

How do I find how many seconds that pass between wave crests when I have the Frequency = 0.5 Hz Wavelength = 6 meters Thanks
*November 12, 2014*

**math**

I need to know how to find a number that makes the statement true so that I can help my daughter. 1/2 < ?/8
*October 14, 2014*

**math rounding**

this 7 digit number is 8,920,000 when rounded to the nearest ten thousand? The digits in the tens and hundreds place are the least and same value . THe value of the thousands digit is double that of the the thousands digit. THe sum of all its digits is 24.
*September 4, 2014*

**Math**

Find y intercept for (-2,4)(6,4) then (0,6) and (8,6). It it possible
*May 3, 2014*

**chemistry**

2Hg+O2=2HgO if 50.0 grams of mercury reacts with 50.0 grams of oxygen gas, how many grams of mercury(ii)oxide are produced?
*February 14, 2014*

**Math**

Which two dates have a quotient of 3 and a sum of 32. Dates are 1-30...
*February 4, 2014*

**math**

120
*August 19, 2013*

**math**

If the volume of a box is 357, how do you determine length, width and height?
*August 13, 2013*

**Math**

Charles has 34 coins 1/3 of them are pennies 1/4 is nickles 1/6 is dimes and the rest of them are quarters. Tell how many of each coin Charles found. Draw all coins and label them
*March 7, 2013*

**math**

Is this correct, I guess my son was trying to figure the answer by adding it to the perimeter of the picture.
*February 28, 2013*

**math**

Erica painted a picture of her dog. The picture has an area of 3,600 cm2 and is square. She has placed the picture in a frame that is 5 cm wide. What is the perimeter of the picture frame? Is the correct answer 260 cm2?
*February 28, 2013*

**math**

he put 4 1/4x3/4 3/3x3/4 5x3/5 1/2x3/4
*February 12, 2013*

**math**

Put the following products in order from least to greatest without multiplying 5x 3/4 4 1/4x 3/4 1/2x 3/4 3/3x 3/4
*February 12, 2013*

**math**

Oh my goodness thank you I didn't even catch that!
*January 7, 2013*

**math**

but what about 5 10/11? There is no common denominator?
*January 7, 2013*

**math**

Order the numbers from least to greatest 4 1/4 4 1/8 5 10/11 4 2/12
*January 7, 2013*

**english**

Thank you, so it should be B. Lay
*December 6, 2012*

**english**

What is the correct answer I ____ on the couch last night. A. lie B. lay C. laid D. lain
*December 6, 2012*

**english**

is it lain
*December 4, 2012*

**english**

Is this correct Having laid on the riverbank all day, the young vacationers missed their meals.
*December 4, 2012*

**english**

Is this correct The white hen has laid the greatest number of eggs.
*December 4, 2012*

**english**

Is the following sentence correct Lsy your clothes out at night, and you will have a head start in the morning.
*December 4, 2012*

**english**

Is the following question correct It took a lot of planning, time, and energy to lay the track for the trans-continental railroad.
*December 4, 2012*

**english**

Is the following question correct? Set the salt and pepper on the table.
*December 4, 2012*

**ap chemistry**

idk
*October 31, 2012*

**word problem**

375. 5*15 is 75 for jonah 4*75 is 300 for friends However question asks total for jonah AND friends.....375
*October 22, 2012*

**math**

classify the triangle as a scalene,isoceles or equilateral and acute right or obtuse
*October 21, 2012*

**probability**

An aircraft is equipped with three engines that operate independently. The probability of an engine failure is .01. What is the probability of a successful flight if only one engine is needed for the successful operation of the aircraft?
*October 10, 2012*

**statistics**

An aircraft is equipped with three engines that operate independently. The probability of an engine failure is .01. What is the probability of a successful flight if only one engine is needed for the successful operation of the aircraft?
*October 10, 2012*

**statistics**

. In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 15 patients using the drug is selected. Find the probability that: (A) exactly three will have this mild side effect (B) at least six will have this ...
*October 7, 2012*

**Statistics**

. In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 15 patients using the drug is selected. Find the probability that: (A) exactly three will have this mild side effect (B) at least six will have this ...
*October 7, 2012*

**college math**

Classify the triangle as scalene isoceles or equlateral and as acute, right or obtuse
*October 5, 2012*

**statistics**

You are given the following data. Number of Absences Final Grade 0 95 1 91 2 82 3 69 4 67 5 58 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*October 4, 2012*

**statistics**

Two cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of Jacks drawn in a set of 2 cards. (A) If this experiment is completed without replacement, explain why x is not a binomial random variable. (B) If this experiment is completed ...
*October 4, 2012*

**statistics**

Determine whether each of the distributions given below represents a probability distribution. Justify your answer. (A) x 1 2 3 4 P(x) 1/5 5/12 1/3 1/6 (B) x 3 6 8 P(x) 0.2 2/5 0.3 (C) x 20 35 40 50 P(x) 0.3 -0.1 0.5 0.3
*October 4, 2012*

**statistics**

. For the table that follows, answer the following questions: x y 1 -1 2 -5 3 -9 4 - Would the correlation between x and y in the table above be positive or negative? - Find the missing value of y in the table. The missing value of y = How would the values of this table be ...
*October 4, 2012*

**statistics**

If the correlation coefficient is -0.54, what is the sign of the slope of the regression line? - As the correlation coefficient decreases from 0.86 to 0.81, do the points of the scatter plot move toward the regression line, or away from it
*October 4, 2012*

**chemistry**

A student wishes to prepare 1.000 g of silver chromate. How many mL of .05000M silver nitrate solution should be added to 50.00 mL of .0700M potassium chromate solution assuming 100% yield
*September 25, 2012*

**math**

What is the product of the digits in the one's place and the hundred's place is 6. The sum of these two digits is 5.
*August 29, 2012*

**nonfiction**

D is the right answer
*July 24, 2012*

**math**

Can you work this problem 6yd 2ft +7yd 1ft
*April 23, 2012*

**math**

Jan Maya and Sara ran a total of 64 miles. two ran the same and one ran 8 less. how many miles did they run?
*April 12, 2012*

**math**

andy is wrapping a present to give to his mother which is in the shape of a cube.each edge of the cube measures 12 inches. how much wrapping paper does he need.
*March 6, 2012*

**Chemistry**

When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
*February 14, 2012*

**Chemistry**

When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
*February 14, 2012*

**6th Grade Math**

God has blessed us with your answer!! Thank you for helping us have a good start this morning! Hope you have a great day!
*February 14, 2012*

**6th Grade Math**

My daughter needs to use PROPORTION to solve metric conversions. Can you please help? The question are for the following conversions: g=kg ___g = 5.114 kg km=m 0.5 km = ___m These are the other conversions that we need to make: ml=L g=mg cm=m kg=g km=m 0.5 km = ___m mm=m cm=mm...
*February 14, 2012*

**Chemistry**

Thank you bob. However, what is specific heat of a metal is e metal is unknown.
*February 14, 2012*

**Chemistry**

When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
*February 14, 2012*

**riddle**

what word can you make with these lettters tttlrmheee
*November 15, 2011*

**algebra**

How do I solve a linear equation using equality properties?
*November 14, 2011*

**english**

Is The economy in Nevada has faltered into a situation. a proper sentence? If not why not.
*October 27, 2011*

**Chemistry**

An unknown hydrate of copper (II) oxalate is to be identified in the lab. The following data was collected by a student: Mass of crucible 23.776 g Mass of crucible + hydrate 24.889 g Mass of crucible + anhydrate 24.530 g Thank you
*October 23, 2011*

**Chemistry**

If 20.0 grams of propane are burned with 50.0 grams of oxygen: What mass of CO₂ is produced? What mass of water is produced? What mass of which reactant was excess? Thank you so much.
*October 23, 2011*

**Chemistry**

If 20.0 grams of propane are burned with 50.0 grams of oxygen: What mass of CO₂ is produced? What mass of water is produced? What mass of which reactant was excess? Thank you so much.
*October 23, 2011*

**Chemistry**

If 20.0 grams of propane are burned with 50.0 grams of oxygen: What mass of CO₂ is produced? What mass of water is produced? What mass of which reactant was excess? Thank you so much.
*October 23, 2011*

**Chemistry**

A 3.000 gram sample of an unknown compound containing the elements carbon, hydrogen, and nitrogen is analyzed by combustion. The combustion releases 4.714 grams of carbon dioxide and 1.500 grams of nitrogen. If 25 molecules have a combined mass of 4.65 x 10⁻²¹ ...
*October 18, 2011*

**Thank you DrBob222**

Thank you - you are an awesome teacher!!!!!
*October 17, 2011*

**Chemistry**

Okay, so my O=.82348 then I divide everything by .1177, and i get c=7.996 H=1.00 O=6.99 This looks like a ratio of 8:1:7 C8H107??
*October 17, 2011*

**Chemistry rework problem**

Thank you Dr. Bob222 An unknown compound contains carbon, hydrogen, and oxygen. When burned, a 2.000 gram sample of this compound releases 3.451 g of carbon dioxide and 1.059 grams of water. What is the empirical formula of this compound? Here is the problem I worked out: C=....
*October 17, 2011*

**Chemistry**

An unknown compound contains carbon, hydrogen, and oxygen. When burned, a 2.000 gram sample of this compound releases 3.451 g of carbon dioxide and 1.059 grams of water. What is the empirical formula of this compound? Thank you very much.
*October 17, 2011*

**Chemistry**

A 12 g sample of an unknown compound contains 3.489 g of sodium and 4.870 g of sulfur. The rest is oxygen. Name the compound Thank you!
*October 17, 2011*

**Chemistry**

A piece of metal alloy (a solution of metals) is made of gold and silver. It is 20% by mass silver. An irregularly shaped piece of this alloy contains 0.356 lb of gold. When the alloy is added to a graduated cylinder that contains 31.55 mL of alcohol, the level in the cylinder...
*October 9, 2011*

**Chemistry**

A homogenous mixture of metals is called an alloy. An alloy is found to be 30% by volume gold with the rest being aluminum. Aluminum has a density of 2.70 g/cm³. Gold has a density of 13.1 g/cm³. If a piece of alloy contains 3.70 lbs. of gold, how many kg of aluminum...
*October 9, 2011*

**Bob Pursley**

Bob: Thank you for answering my Chemistry question. I apologize that it was on there twice. I accidentally posted again the same question instead of a different question. You answered the first question with precision. Thank you
*October 9, 2011*

**Chemistry**

An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper? Trying to help my son study. Thank you.
*October 9, 2011*

**Chemistry**

An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper? Trying to help my son study. Thank you.
*October 9, 2011*

**Chemistry**

An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper? Trying to help my son study. Thank you.
*October 8, 2011*

**6th grade science**

Why do you feel fuller when you eat meat than you eat fruits? This is put with an energy assignment.
*September 12, 2011*

**8th grade math**

A perimeter is the area around the rectangle. Since one side is the same as the other, you would add the length and width together, then multiply by 2. 4 2/3 + 3 1/3 = 8 inches 8 X 2 = 16 inches.
*September 12, 2011*

**science**

This is put with an energy exercise.
*September 12, 2011*

**science**

Why do you feel fuller when you eat meat than you eat fruits?
*September 12, 2011*

**Math**

It is higher then 1.3 and smaller then 1.5. 1.3 < 1.4 < 1.5
*September 12, 2011*

**ordering decimals**

I do not understand how to find out what number come's between 0.425 and 0.475 would it be $ 4.25- $4.75
*April 4, 2011*

**ordering decimals**

Ms.Sue could you please show us another exmple i understood 0.6 0.65 0.7 how about with a double digit number like: 0.25_____0.15 or 0.425_____0.475
*April 4, 2011*

**ordering decimals**

how do we fit a decimal between this pair 0.6____0.7
*April 4, 2011*

**ordering decimals**

how do we fit a decimal in each pair 0.6 0.7
*April 4, 2011*

**math**

how many ways can this equation be made true 24 x 18 = 432 x
*March 29, 2011*

**5th grade math**

I am desperately trying to help my 5th grader figure out how many ways can we make this equation true 24 x 18 = 432 x
*March 29, 2011*

**com 155**

She stole my credit cards to go shopping with. My mom has lots of debt from, when she had bought her house.
*January 30, 2011*

**math**

I don't know 😞 every year and the chipmunks hey 🙋 the bus stop and think about the history and the chipmunks too much more than just the same thing 😊
*December 7, 2010*

**SS**

What small country lies between 120 East and 130 East longitude and directly on the Tropic oc Cancer?
*November 7, 2010*

**math**

whats a another division pronlem that equals 38.6
*October 13, 2010*

**science**

What is another way to write the volume of a 1,000 cm rectangular prism?
*October 13, 2010*

**math**

8/2*1-3+4=5
*September 20, 2010*