Thursday

December 8, 2016
Total # Posts: 1,074

**Math**

During a class election 12 people voted for candidate A.If there were 42 votes total,what is the ratio of votes for candidate B compared to candidate A?

*December 6, 2016*

**algebra 2a solving systems using matrices**

write the system of equations represented by the matrix [0 1 2 4] [-2 3 6 9] [1 0 1 3] a: x+2y=4 -2x-3y+69=0 x+y=3 b: x+2y=4 -2-3y+6=9 x+y=3 c: y+2z=4 -2x+3y+6z=9 x+z=3 d: x+2z=4 -2x-3y+6=9 think its A

*December 2, 2016*

**math**

Quin has 28 state quarters collected. he wants to have a complete set of the 50 state quarters. How many more quarters does he need to collect?

*December 1, 2016*

**Literature **

What does this quote mean> "The world abounds with masterpieces, and yet they do not fill my two hands"

*November 29, 2016*

**English**

What does this mean? "The world abounds with masterpieces, and yet they do not fill my two hands"

*November 29, 2016*

**math algebra**

A car was purchased for $3,495 and will depreciate 20% each year. Find a linear function for the value of the car at time t in years. Define variables clearly. Graph the function you found in part A. A claim is made that the car will not be worth anything in five years. Do you...

*November 16, 2016*

**Physics**

Did the give any angles?

*November 10, 2016*

**Chemistry (molarity)**

Molarity is another way of saying molar concentration. If you know the formula for molarity you will see that the change in volume will affect the molarity of a solution. The more water you add the more you will dilute the solution.

*November 10, 2016*

**Math**

Water stations will be placed every 400 meters of a 5-kilometer race. How many water stations are needed?

*November 8, 2016*

**Calculus**

Okay I'm just confused about how many rectangles to use? Also, if I should only worry about [0,pi/2]

*October 29, 2016*

**Calculus**

n ∑(pi/n)(cos(pi/n) t=1 corrected

*October 29, 2016*

**Calculus**

Determine an upper/lower estimate for the area under the curve f(x) = cos x between x = 0 and x = pi/2 . Show how you arrive at this estimate. This is the question that my teacher wanted us to answer and I'm not sure how to even start the process. Should I use Reimann'...

*October 29, 2016*

**Chemistry**

2H IONS WAS USED AND ITS MOLAR

*October 26, 2016*

**Chemistry**

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.45 m Na2SO4(aq). Constants may be found here sites. google. com/site/chempendix/colligative.

*October 19, 2016*

**Calculus**

I tried this way several times and it is not correct. Are there any other ways to doing this problem?

*October 15, 2016*

**Calculus**

A baseball team plays in a stadium that holds 68000 spectators. With the ticket price at $11 the average attendence has been 27000. When the price dropped to $10, the average attendence rose to 34000. Assume that attendence is linearly related to ticket price. What ticket ...

*October 15, 2016*

**Science **

A car travels 50 miles in 1 hour and 15 minutes. What is the average speed

*October 12, 2016*

**Math**

Can you please explain how to get the answer for question above

*October 3, 2016*

**Calculus**

Give an example of a function with a critical point that is neither a maximum nor a minimum. Specify the relevant point(s). This is what I have and this is what I got wrong... A function with a critical point that is neither a maximum nor a minimum would be f(x)=x^2 if F(x) = ...

*October 2, 2016*

**Calculus**

Also, just got the news that we can not use the Pythagorean theorem b/c its not a right triangle that is why we are using the law of cosines...UGH!! If there is any other way to go about this please PLEASE HELP!

*September 30, 2016*

**Calculus**

Okay this is what I got... Minute hand = a = 8 Hour hand = b = 4 Distance between a---b = c And we are looking for dc/dt = ? The law of cosine states c^2 = a^2 + b^2 2ab cos (c) So… C^2 = 8^2 +4^2 – 2(8)(4) cos (c) Take derivative 2c * dc/dt = 0 + 0 + 2(8)(4) sin (c...

*September 30, 2016*

**Calculus **

Hello! I need help with this problem, its been irritating me for days! Any help would be greatly appreciated! Here’s the question.. The minute hand on a watch is 8 mm long and the hour hand is 4 mm long. How fast is the distance between the tip of the hands changing at 10...

*September 30, 2016*

**Math**

Need help with this question too

*September 26, 2016*

**physics**

a ball is thrown upward from a bridge with a speed of 48 ft/s. It misses the bridge on way down and lands in water 160 ft. below. Find how long the ball rises, how high it goes, how long it is in the air, and its velocity when it strikes the water.

*September 26, 2016*

**Physics**

A infinite wire carrying a current 5A is bent at right angle find the magnetic Induction at a point on the perpendicular to the wire through its point of bending at a distance 35 cm from the corner

*September 25, 2016*

**Social Studies**

What major advantage did the colonists have over the British during the Revolutionary War? A. colonists had more supplies than the British B. colonists had European support C. colonists had a better knowledge of the land than the British D. colonists had more soldiers than the...

*September 23, 2016*

**Social Studies**

What is a name of a soldier in the Revolutionary War that was a low ranked soldier but then stepped it up?

*September 19, 2016*

**Science**

Yes they are...what i want is a site or something that can help me research these question...For Number 1:measuring the distinct between to cites number 2:12 Number 3: False

*September 9, 2016*

**Science**

One:the sI unit measure for length the meter-would be most appropriate when Two:The metric System Of measurement is based on the number Three: Scientists use SI because it allows them to compare data and communicate with each other about their results (true/False ~Mia

*September 9, 2016*

**Science**

False

*September 8, 2016*

**Science**

I forgot to put this in True/False

*September 8, 2016*

**Science**

in science, skepticism means coming up with inventive way to solve a problems or produce new things

*September 8, 2016*

**algebra**

The graph above shows the relationship between the time it takes in minutes for Rosina to walk versus run to different destinations. Give a written interpretation of the slope of the function.

*July 13, 2016*

**Algebra**

what's the question?

*June 29, 2016*

**Riddle**

A dead heart can start beating words with no sound can be known Where eyes can tell a story And you dream of the unknown Where your life can take you places But your thoughts are your true home When a smile is not yours But you happy that it was loaned ..........what am I ?

*June 26, 2016*

**Statistics**

many ground level plants in tropical rainforest have adapted to the shade of the forest canopy. these plants tend to function well as house plants since they require minimal sunlight. A botanist is interested in domesticating a particular plant found in the amazon rainforest...

*June 22, 2016*

**history**

Discuss why England's North American colonial empire had outstripped those of her European rivals by the end of the seventeenth century?

*June 13, 2016*

**anatomy **

large tubes from trachea to lungs is a. anoxia b. diaphragm\ intercostals c.spirometer d. breathing

*May 18, 2016*

**Math**

Y= 2x -1 and y= x+3 (2,4) (-4,2) (4,2) No solutions

*April 29, 2016*

**ELA**

It's for a teacher Mrs. Brown how can I make it unique

*April 25, 2016*

**ELA**

I need an amazing title that rhymes with brown and maybe has the word brown in it..

*April 25, 2016*

**Geometry **

Average diameter of about 7900 miles. Jupiter has an average diameter of 86900 miles. The volume is Jupiter is approximately how many times larger than the earth?

*April 13, 2016*

**chemistry**

acetic acid and oxalic acid exist in different states at room temperature. one is a liquid the other is a solid which is the solid? Explain.

*March 28, 2016*

**Math**

what is 900 times 8046?

*March 28, 2016*

**Readers**

To scale something can mean

*March 23, 2016*

**Chem**

Honore I don't understand...

*March 6, 2016*

**Chem**

why is sef4 melting point higher than sef6?

*March 6, 2016*

**S.S Japan**

Thank you!

*March 3, 2016*

**S.S Japan**

I read up and im pretty sure its C.

*March 3, 2016*

**S.S Japan **

Which statement best describes Yokohama? (A) Yokohama is an ancient political center. (B) Yokohama is a rural farm village. (C) Yokohama is a large crowded city. (D) Yokohama is an important mining town. i think b.

*March 3, 2016*

**Art**

If you don't mind me asking but who are you?

*March 3, 2016*

**Art**

Thank you!

*March 3, 2016*

**Art**

Maybe.

*March 3, 2016*

**MATH **

DANI NEEDS 8 EQUAL SECTIONS FROM A BOARD THAT IS 13 METERS LONG. WHICH OF THE FOLLOWING DOES NOT PRESENT THE LENGTH OF 1 SECTION OF THE BOARD

*February 24, 2016*

**chemistry**

what does the spectrum of hydrogen tell us about its electrons?

*February 16, 2016*

**science **

in which biome would you find the main types of plant life to be grasses and nonwoody plants A.Desert B.Savanna C.Tundra D.Mountains my answers B

*February 16, 2016*

**Math**

A savings account earns 5% simple interest per year. The principal is $1200. What is the balance after 4 years?

*February 15, 2016*

**chemistry**

what volume of hydrogen gas, measured at STP, will be produced when 16.0g of magnesium reacts completely with an excess of hydrochloric acid

*February 15, 2016*

**Math**

If the independent variable is 6 what is the dependent variable for y=10x-3

*February 10, 2016*

**calc 1**

An electrical circuit switches instantaneously from a 3 volt battery to a 22 volt battery 8 seconds after being turned on. Sketch on a sheet of paper a graph the battery voltage against time. Then fill in the formulas below for the function represented by your graph.

*January 28, 2016*

**Math**

all of them have the same denominator so add the numerators place 8 in the denominator and you have the answer

*January 26, 2016*

**Math**

yes

*January 26, 2016*

**Math**

*decimal places

*January 26, 2016*

**Math**

then you have to look at the decimals behind the 36 to see which is greater

*January 26, 2016*

**Math**

To find the percentage divide the number of strings in a school by the total number of musicians in that school then multiply by 100

*January 26, 2016*

**Science**

it is A Climate

*January 26, 2016*

**Language **

Two very good family friendly movies. Toy story is about toys that talk. Inside out is about charters that are in are brain. Inside out a toy story has a lot in common. They both have sadness and joyful moments the are funny and family friendly and the best part is you don&#...

*January 21, 2016*

**Chem**

the formula mass of an unknown compound is 44.009 amu. What is its molar mass?

*January 11, 2016*

**Math**

The distance between goalpost, BC, is three times the distance from the top of the goalpost to the bottom. If the perimeter of ABCD is 21 1/3 yards, what is the length of BC

*January 7, 2016*

**physics**

A 1500 kg car traveling West at 90.0 km/h collides with a 1400 kg truck traveling North at 72.0 km/h.The two vehicles entangle after the collision and head off as one. What is the velocity of the wreckage immediately after the collision?

*January 4, 2016*

**Chemistry**

Like dissolves like is actually a good way to look at it but to fully explain... The four bonds of carbon CCl4 are polar, but the molecule is nonpolar because the bond polarity is canceled by the symmetric tetrahedral shape. The electrons on H2O are unequally shared, with the ...

*December 6, 2015*

**Chemistry**

Q= c*m*delta T Q=energy transferred in joules c=specific heat of water delta T=change in temp

*December 6, 2015*

**Science**

Are any numbers given ?

*December 6, 2015*

**Math**

Multiply 23 times 6 then theres your answer.

*December 6, 2015*

**I can**

whats the question

*December 6, 2015*

**Chemistry**

On a periodic table bond lengths increase from right to left then bond the periodic table. Since these elements(N,P,AS, and Sb) are all in the same group you can just go down. Than is why Sb is the highest. The bond strength is dependent upon the bond length. The longer the ...

*December 6, 2015*

**st. Anthony's school**

pcl3

*December 6, 2015*

**Algebra**

1.B 2.C

*December 2, 2015*

**chemistry**

a saturated NH4Cl aqueous solution is prepared in 100g oh water t 25 celsius. how much solute is in solution.

*December 2, 2015*

**Math**

how many times larger is Egypt compared to Wyoming?

*December 1, 2015*

**chemistry**

The first multiplication should be higher

*November 30, 2015*

**Chemistry**

what is the initial temp

*November 30, 2015*

**PreCalculas**

n= the number in the sequence for the first term plug in 1 for n for the second 2 for n and so on.

*November 30, 2015*

**Math**

6 hours

*November 30, 2015*

**chemistry**

(Mzn*Czn*Tzn)+(Mwater*Cwater*Twater)= Tfinal((Mzn*Czn)+(Mwater*Cwater))

*November 30, 2015*

**Physics**

KE = 1/2 mv^2 You already know the final mass and the final velocity final mass (Ma+Mb) final velocity= 14 m/s im assuming this is a continuation of the other posted question

*November 30, 2015*

**Physics**

Kinetic energy from what? What variables are given?

*November 30, 2015*

**Math**

29/70 can not be reduced its already in its simplest form

*November 30, 2015*

**Math**

Okay the total distance from shawn's house to school is 9/10 then to Mike 1/5 then to Jose 2/7 you will have to find the common denominator which in this case will be 70 So 9/10 becomes 63/70 1/5 becomes 14/70 then 2/7 becomes 20/70 so the total distance to Jose's ...

*November 30, 2015*

**Science 8**

I explained above

*November 30, 2015*

**Science 8**

Use process of elimination light has to be one of the final energies so D is out Now you're not applying any type of heat. You only have the batteries which a composed of chemicals. Now which answer has chemical for the initial and light for the final :)

*November 30, 2015*

**chemistry**

specific heat = delta Q/(m*deltaT) delta t =deltaQ/cm the lower the specific heat the smaller the number you have to divide by resulting in a larger delta T

*November 30, 2015*

**chemistry**

lower specific heat

*November 30, 2015*

**Physics**

Okay because the cars travel together afterwards this is an inelastic collision. SO you would need the formula Ma*Va+Mb*Vb=(Ma+Mb)Vf because car B is at rest it can be simplified to Ma*Va=(Ma+Mb)Vf Now you have all the values except Va, so first solve for Va The when you find ...

*November 30, 2015*

**math**

Z score = (actual-mean)/standard deviation. Hope this helps

*November 30, 2015*

**Math**

Thank you Ms.Sue

*November 21, 2015*

**Math**

I need help with this problem: Circle the number closest in value to 9. (this is a decimal at the end, not a period _ a. 8.5 (there is a line over the 5) _ b. 8.89 (there is a line over the 9) c. 9.69 d. 9.99 I believe the answer is b, is this correct?

*November 21, 2015*

**French**

Is magazine de vêtements masculine or feminine?

*November 2, 2015*

**vectors linear algebra**

they give you x x=-12 so solve for t in the x equation by plugging in the x value -12=-4-6t -8=-6t 4/3=t now plug in the t value for the y and z equation to find the coordinates

*October 26, 2015*