Saturday

December 10, 2016
Total # Posts: 580

**Math**

If you estimate a person's age to be 24 but his actual age is 20 what was your percent of error in estimating his age? Round to the nearest percent?

*November 13, 2016*

**Math**

The temperature inside a greenhouse was 60 degrees Fahrenheit and increased to 75 degrees Fahrenheit over the next few hours. What was the percent increase in temperature?

*November 13, 2016*

**algebra**

Simplify: 30x^6 ? 6x^3 + 24x/?6x2, x ? 0

*November 3, 2016*

**algebra**

The angles in a triangle are such that the measure of one angle is 10° more than the measure of the smallest angle, while the measure of the third angle is three times the measure of the smallest angle. Find the measures of all three angles, in degrees.

*October 31, 2016*

**algebra**

The two smaller angles of a right triangle have equal measures. Find the measure of the smaller two angles, and the measure of the largest angle, in degrees.

*October 23, 2016*

**Algebra**

Six less than three times a number is two more than four times the number.find the number

*August 10, 2016*

**Math**

Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and forms triangle ABC. What is the measure of the angle between lines b and c? a. 35 degrees b. 45 degrees c. 90 degrees d. 135 degrees e. Can't be ...

*July 14, 2016*

**Math**

It doesn't say

*July 13, 2016*

**Math**

Daniel drives 30 mph to the toy store and 45 mph back home, taking the same route both ways. If the total trip took two hours, how many total miles does he drive on the round-trip from home to the store and back? Can you please explain how to do it?

*July 13, 2016*

**Algebra**

If 4x^2+20x+r=(2x+s)^2 for all values of x, what is the value of r-s? Can you please help me?

*July 12, 2016*

**Math**

If 6 drums of oil will heat 5 buildings for 3 days, how many days will 10 drums of oil last when heating 2 buildings? Is it 12.5 days?

*June 17, 2016*

**Spanish**

aha i see what you did there Ms. sue

*May 17, 2016*

**geometry **

I have a few questions about finding the area. I don't know how to link images on here, so I will just try my best to describe the shapes. First question: What is the area of the figure below? It is a parallelogram connected to a triangle. The spotted line and right angle ...

*May 4, 2016*

**Geometry/Trig**

Ok thank you!!

*May 3, 2016*

**Geometry/Trig**

In triangle ABC, A is a right angle, and m b=45 degrees. What is the length of BC? If your answer is not an integer, leave it in simplest radical form. a. 16 ft b. 16 sq 2 ft c. 16 sq 3 ft d. 32 ft I'm really confused as to how to do this... Could someone please explain ...

*May 3, 2016*

**Spanish**

In the following sentence, which direct object requires the personal a? (I don't really get this question, please help!) a. el tren b. el monumento c. la amiga de mi mama d. el barco Right dow I think that it is el barco but I'm not sure...

*May 2, 2016*

**life orientation**

Freedom of movemont 2 A healthy environment 3 equality

*April 23, 2016*

**Spanish**

Did you ever find out what it was?

*April 21, 2016*

**Physics**

all require energy in the form of electricity

*April 11, 2016*

**philosophy **

Of the ethical theories kantian, utilitarian and virtue which approach do you think is best for deciding tough ethical issue?

*April 11, 2016*

**English**

Thanks!!

*April 3, 2016*

**English**

In Romeo and Juliet, which of the following illustrates Shakespeare's use of comic relief? A) A servant explains to Capulet that cooks should lick their own fingers. B) Capulet believes that Juliet is dead when she is really only sleeping. C) "Honest good fellows, ah...

*April 3, 2016*

**Math**

What is the probability of choosing a red or blue gum ball from a bag that contains 14 red, nine blue, and 12 green gumballs.

*March 26, 2016*

**MATHEMATICS**

A SECTOR IS USED TO FORM ACONE IF THE RADIUS AND ANGLE OF THESECTOR IS 8CM AND 160 DEGREE RESPECTIVELY CALCULATE, THE RADIUS OF THE CONE ,VERTICAL HEIGHT, VERTICAL ANGLE, VOLUME AND TOTAL SURFACE AREA OF THE CONE

*October 19, 2015*

**Science**

Kendell wants to determine if there is a trend in air temperature changes during April. Which procedure should he follow?

*October 16, 2015*

**Biology**

1.A white flowered plants is crossed with a plant that is heterozygous for the trait. What percentage of he offspring will have purple flowers? 2.Two plants, both heterozygous for he gene that controls flower color are crossed. What percentage of their offspring will have ...

*September 19, 2015*

**Biology**

Which statement is not true regarding illness associated with malfunctioning cellular organelles? The illness _____ a. can result in a diverse set of sumptoms b. may impact multiple body systems c. is typically simple to diagnose d. may be lethal

*September 19, 2015*

**Vocabulary**

Thank you!

*August 5, 2015*

**Vocabulary **

"In a large metropolitan airport, an air terminal at the edge of a major city, it is not unusual to have many landings and take-offs during a 24-hour period." The word "metropolitan" in the line above most nearly means A) international and domestic B) ...

*August 5, 2015*

**Math**

Thanks Reiny!

*July 28, 2015*

**Math**

List equally likely outcomes in the sample space for the experiment of rolling a pair of dice. One student list 5,6 and 6,5. Another student states only one of these need to be listed. Which student is correct and why and what activity could be described to help further ...

*July 28, 2015*

**Math**

List equally likely outcomes in the sample space for the experiment of rolling a pair of dice. One student list 5,6 and 6,5. Another student staye

*July 28, 2015*

**Math**

The best free throw shooter on a basketball team has a 60% chance of making the 1st shot when shooting 2 free throws. If he makes the 1st shot, he has an 80% chance of making the 2nd. If he misses the 1st shot, he only has a 40% chance of making the 2nd shot. What are the ...

*July 28, 2015*

**Math**

Using the following information for the Vertex and Directrix, write the standard form equation for the parabola with what is given below. Vertex: (-2,1) Directrix: x=1

*May 7, 2015*

**Math**

Look for the probability for an experiment of which requires you to select one card from a standard deck of 52 playing cards. Write your final answer as a fraction in the simplest form of a/b. 1.) P(the card is not a face) 2.) P(the card is a king) 3.) P(the sum is at least 7...

*April 27, 2015*

**math**

thank you! i see where i did my calculations wrong..

*April 25, 2015*

**math**

Solve each equation for 0<_ 0<_ 2pi(3.14) a) 2tan^20 = 3tan0 - 1

*April 25, 2015*

**math**

Yup. Thank you

*April 17, 2015*

**math**

where did you get 0.083

*April 17, 2015*

**math**

How much money must be invested at 6.3 % simple interest to earn $250 in interest each month?

*April 17, 2015*

**math**

Sally has a balance of $2845 on her credit card. What rate of simple interest is she being charged if she must pay $26.19 interest for the 12 days her payment is late?

*April 17, 2015*

**French (if correct translation/grammar)**

Presque toutes les grandes histoires d'horreur sont également de grands romances, et histoire de Leroux d'un compositeur déformé et masqué, hantant l'opéra de Paris de labyrinthe comme un fantôme, racheté seulement ...

*April 6, 2015*

**English**

im not writing an essay

*April 6, 2015*

**English**

Classic Literary Adaptations, Le Fantôme de l'Opéra' by: Frank Milani et Paulette Collet

*April 6, 2015*

**English**

reed, the adaption is just a shorter version of the original novel, everything is the same. how would you know nobody read the version i have read?

*April 6, 2015*

**English**

How does Erik (the phantom) from The Phantom of the Opera show romance? i already mentioned about his relationship with Christine, but i need two more points.

*April 6, 2015*

**Chemistry**

1.) Explain the similarity between Mg(OH)2 and Zn(OH)2 in particular why would any insoluble hydroxide tend to dissolve in an acidic solution? Are they both bases? 2.) Explain the difference in particular how does Mg^+2 appear to form complex ions with OH^- and NH3? If these ...

*March 20, 2015*

**English**

Pretty sure that the second one is C, the fight in which Mercurio and Tybalt are killed because what they are saying is that on hot days people become more aggravated, and it's foreshadowing the fight that is to come. I know this is like really late, but this can help the ...

*March 13, 2015*

**Physics 1**

A man opens a 1.14-m wide door by pushing on it with a force of 49.5 N directed perpendicular to its surface. (a) What magnitude torque does he apply about an axis through the hinges if the force is applied at the center of the door? N · m (b) What magnitude torque does...

*March 6, 2015*

**Physics 1**

A bicycle tire has a mass of 2.54 kg and a radius of 0.346 m. (a) Treating the tire as a hoop, what is its moment of inertia about an axis passing through the hub at its center? kg · m2 (b) What torque is required to produce an angular acceleration of 0.710 rad/s2? N &...

*March 6, 2015*

**Math- Precalculus **

A utility company has the following rate schedule for natural gas usage in a city’s business district: Monthly service charge $8.80 Per therm service charge: 1st 25 therms : $0.6686/therm Over 25 therms: $0.85870/therm (a) What is the charge for using 25 therms in one ...

*February 26, 2015*

**science**

what is the concentration of a solution made by mixing 22.0 g of salt with 200 mL of water? assume that the volume of the water does not change when the salt is added

*January 14, 2015*

**social studies**

1. C

*December 3, 2014*

**physics**

A motorcross racer covers one lap of a 1200 meter track on his motorcycle at a speed of 27 meters per second. How long does it take to ride one lap: A. In seconds? B. In minutes?

*November 20, 2014*

**Chemistry**

Yes you are correct for the change to H3O^ But do I need the plug the 37 degrees in somewhere or is the response above the final answer?

*November 19, 2014*

**Calculus**

I don't see what you mean..Do you mean the 8th derivative of the function?

*November 11, 2014*

**Calculus**

Find the degree 3 Taylor polynomial approximation to the function f(x)=8ln(sec(x)) about the point a=0 .

*November 11, 2014*

**physics**

Bob fires a cannon horizontally off a 125 meter cliff.the cannonball leaves the cannon traveling at 144 meters per second. How far from the cliff will the cannonball land?

*November 10, 2014*

**Chemistry**

I am a parent trying to help with my childs homework. This is the question that has us stuck. Can you assist us? Boron trioxide B203 , reacts with waterto produce boric acid, B(OH)3. B2O3(s) + 3H2o (l) -> 2B(OH)3(s) Ricardo adds 27.2 g of B2O3 to an excess of h2O, and the ...

*November 4, 2014*

**Chemistry**

Not sure but this is what I came up with: molarity= mol/mL 26.7/342.15=.078=.78M

*October 29, 2014*

**Chemistry**

26.7g/100mL

*October 29, 2014*

**Chemistry**

The solubility of aluminum sulfate in water at 20degrees Celcius is 26.7g/100L. Calculate its molarity?

*October 29, 2014*

**Chemistry**

Haven't had any lectures on this yet. Can you please assist? thank you

*October 29, 2014*

**Chemistry**

A student reacted 0.500g of Pb(NO3)2 with 0.750g of KI according to the reaction, Pb(NO3)2(aq) + 2KI(aq)=PbI2(s) + 2KNO3(aq) A) How many moles of Pb(NO3)2 were used? B) How many moles of KI were used? C) How many moles of PbI2 would form, based on the moles of Pb(NO3)2 used? D...

*October 29, 2014*

**CHEMISTRY**

A student combusted 0.500g of purified aluminum power with excess oxygen in an oxygen atmosphere according to the reaction, 4Al(s) + 3O2(g)= 2Al2O3(s) A) What is the limiting reactant? B) How many moles of Al were used? C) How many moles of Al2O3 would form, based on the moles...

*October 29, 2014*

**Chemistry**

the solubility of aluminum sulfate in water at 20 degrees celcius is 26.7 g/100mL Calculate the molarity?

*October 28, 2014*

**Chemistry**

How many moles of magnesium are in Magnesium Chloride?

*October 25, 2014*

**Chemistry**

please HELP!! mass of magnesium chloride =.2 mass of chlorine in magnesium chloride =.1 A)moles of magnesium? B)moles of chlorine? C)moles of magnesium divided by the smaller number of moles? D)moles of chlorine divided by the smaller number of moles? E)experimental empirical ...

*October 25, 2014*

**Chemistry**

the solubility of aluminum sulfate in water at 20 degrees celcius is 26.7 g/100mL Calculate the molarity?

*October 24, 2014*

**Chemistry**

a compound of nitrogen and oxygen is 30.46% by mass N and 69.54% by mass O. the molar mass if the compound was determined to be 92g/mol. What is the empirical formula of the compound? What is the molecular formula of the compound?

*October 22, 2014*

**Chemistry**

Fe1.4O1.4 = FeO

*October 22, 2014*

**Chemistry**

When 6.25grams of pure iron are allowed to react with oxygen, a black oxide forms. If the products weighs 8.15g, what is empirical formula of the oxide?

*October 22, 2014*

**chem**

p in atm? 0.8atm = pO2 +0.031 0.8-0.031 = pO2 0.769atm = pO2 p in torr? 608 = pO2 + 23.8 608-23.8 = pO2 584.2 torr = pO2

*October 14, 2014*

**chem **

The total pressure in a vessel containing hydrogen collected over water at 25degrees Celsius was 0.8atm. the vapor pressure of water at the temperature is 23.8torr. What was the pressure of the oxygen in torr?

*October 14, 2014*

**chem**

T2 = 300K(3.00L/3.60L) = 250K or -27degrees Celsius

*October 14, 2014*

**chem **

The volume of a 3.60L sample of gas at 27degrees Celsius is reduced at constant pressure of 3.00L. What is the final temperature?

*October 14, 2014*

**chem**

V2=1.4L (450K/300K)=2.1L

*October 14, 2014*

**chem**

While the pressure of 1.40L of gas is kept constant, its temperature is increased from 27 degrees Celcius to 177 degrees Celcius, How do I calculate the new volume?

*October 14, 2014*

**chem**

Ammonia gas occupies a volume of 5.00L at 4.00 degrees celcius and 760 torr. what is the volume at 77degrees celcius and 800 torr?

*October 14, 2014*

**Math**

What are different strategies of finding all the factors of a number besides the rainbow method?

*September 15, 2014*

**Alg I**

when translating the verbal expression "five more than d" into an algebraic expression, is the answer 5+d or d+5? Aren't they the same?

*August 21, 2014*

**math**

A bathroom measures 250cm by 175cm.Calculate the side of the largest square tile that can be used to tile the floor without cutting.

*July 6, 2014*

**Math**

A living room measures 450cm by 330cm.Find the dimension of the largest tile that can be used to tile the floor without cutting.

*July 6, 2014*

**Math**

A cell phone company charges a monthly fee of $17.95 and $0.03 per minute Write an equation that represents the cost (c) for using the cell phone for minutes (m) Use your equation from part a to find the cost for using the phone for 150 minutes

*April 28, 2014*

**Math**

Mary has a container of sugar in the shape of a cylinder the container has a diameter of 10 inches and a height of 6 inches if the container is full how much will the sugar weigh if the average weight of the sugar is 0.2 ounces per cubic inch round to the nearest tenth

*April 28, 2014*

**Epidemiology**

A Case control study

*April 28, 2014*

**orgo chem**

how much acid will remain after 3 extractions with 1.0 mL of ether of 50mg butanoic acid, 5mL water?

*April 11, 2014*

**Physics**

A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. A rope is wound around the cylinder and its free end is attached to a block of mass 54.0 kg that rests on a platform. The cylinder has a mass of 265 kg and a radius of 0.430 m. Assume...

*April 10, 2014*

**Indian wells**

5/8 of the students in mr. Halls class got an A or B . Four times as many students got an A than a B. what fraction of Mr. Hall's class got an A.

*March 24, 2014*

**Math **

Determine if the lines L1 and L2 passing through the give pair of points are parallel, perpendicular, or neither. L1: (-2, -3), (1, 3) and L2: (4, 5), (-4, -11)

*February 20, 2014*

**Chemistry**

First calc. the moles from M and L: (.0234)(.01365)= 3.19e-4 Determine moles Ca(OH)2 titrated: (3.19e-4)/2 = 1.60e-4 mol Remember, every one Ca(OH)2 titrated requires 2 H+ [Ca2+] = (1.60e-4)/.01 = .01597M [OH-] = (.01597)(2) = .0319 M Ksp = (.01597)(.0319)^2 = 1.63e-5

*February 5, 2014*

**Chemistry**

About 50% of U.S. and most Canadian sulfur is produced by the Claus process, in which sulfur is obtained from the H2S(g) that occurs in natural gas deposits or is produced when sulfur is removed from petroleum. The reactions are described by the equations 1)2H2S(g)+3O2(g)=2OS2...

*February 2, 2014*

**math**

the population of Knoxville is 500,000 and is increasing at the rate of 3.75% each year. Approximately when will the population reach 1 million?

*January 12, 2014*

**physics**

rank the average gravitational force from greatest to least between (a) sun and mars (b)sun and moon (c) sun and earth include an explanation PLEASE!!!!

*January 3, 2014*

**8th grade science**

thank you so much this has really helped me :))

*November 13, 2013*

**8th grade science**

Can someone please help me solve this question please because I'm having trouble with this question and can someone please explain to me how they got this answer? Thank you :D

*November 13, 2013*

**8th grade science**

Q: A person living in North America will be able to see 15 lunar eclipses in the 2010-2020 decade. In the same time period, only two solar eclipses can be observed in North America. why will more lunar eclipses than solar eclipses be visible from North America in this decade? ...

*November 13, 2013*

**Math **

maria works 8 hr shifts.she has earned 62.75 mins of sick time. how many sick days does she have

*October 5, 2013*

**Geometry**

What would we do without Ms. Sue??

*September 30, 2013*

**Math **

maria works 8 hr shifts.she has earned 62.75 mins of sick time. how many sick days does she have

*September 30, 2013*