# Posts by jj

Total # Posts: 1,046

**math**

4/5+3/5

*March 24, 2017*

**physics**

Explain in a few words why, when operating a garden hose fitted with a trigger-operated nozzle, the water jet is momentarily more powerful at the instant the trigger is squeezed than later, when there is a continuous stream of water. Show that the amount of power in the water ...

*March 13, 2017*

**Math**

A sphere has a radius of 16 cm and a plane passes thru it at 9 cm below the center, what is the area of the intersection between the plane and the sphere?

*February 23, 2017*

**social studies?**

free lunch

*February 14, 2017*

**social studies?**

I need help with my homework. I have to evaluate free school on: Effectiveness Efficiency Equity

*February 14, 2017*

**chemistry**

if 3.15g of mercury are thermally decomposed to mercury and oxygen what mass of mercury will be produced and how many oxygen molecules will be produced [hg=208,o=16]

*December 30, 2016*

**AP Language-Inductive/Deductive**

hh

*December 8, 2016*

**Algebra 2**

Complex numbers are written in the form a + bi. What does i represent? -1 0 1 sqrt-1 **my choice

*November 30, 2016*

**Social studies connexus 8th grade**

The Underground Railroad used escape routes that went throughout the South. Based on that fact, which of the following conclusions could be made? I could use some help here can anyone help me give me an answer or a link of some sort? Thanks

*November 15, 2016*

**Social studies**

Thanks

*November 15, 2016*

**Physics**

A 1340-kg car traveling east at 13.6 m/s (20 mi/h) has a head-on collision with a 1930-kg car traveling west at 20.5 m/s (30 mi/h). If the collision time is 0.10 s, what is the force needed to restrain a 68-kg person in the smaller car? In the larger car? I understand how to ...

*November 14, 2016*

**Math**

determine whether the graphs of the following equations are parallel or perpendicular y=2/3x + 3, y=3/2x, 2x-3y=8

*November 12, 2016*

**math**

Drawing a picture for this problem creates two similar triangles, you simply have to use the given ratio from the first triangle to find the height of the tree, so 1.6/4=x/12. Cross-multiplying gives us (1.6)(12)=4X, Therefore, x=((1.6)(12))/4

*November 4, 2016*

**Algebra**

During a science experiment, Nico created a 32%alcohol solution by mixing 8 fluid ounces of a 50% alcohol solution with a certain amount of an 8% alcohol solution. How many fluid ounces of the 32% alcohol solution did he create?

*November 4, 2016*

**Physics**

A child saw a skunk in a hole of a tree, standing 2.5m away. The child attempted to throw a pebble into the hole, but missed with a speed of 11m/s. Angle of elevation is 75 degrees, what was the Vfy of the pebble?

*October 17, 2016*

**Physics**

A girl tried to overthrow gender stereotypes by kicking her stuffed animal across a park with an initial velocity of 25m/s, making an angle of 45 degrees with the horizontal. Upon reaching maximum height, her cat jumped and propelled it further horizontally with a velocity of ...

*October 17, 2016*

**7th Math**

If there are 16 dark blue triangles,then how much fabric was used if each leg is 10 cm and the hypotenuse is 14.2 cm long? 10+10=14.2?

*October 12, 2016*

**environmental science**

4. my answer is B

*October 12, 2016*

**environmental science**

Ecologists designed an experiment to determine if nitrates or phosphates are more limiting to algae growth. They divided a lake in Canada into two equal-sized sections by a vinyl curtain. Then they fertilized each sub-basin of the lake, one with nitrates and carbon, and the ...

*October 12, 2016*

**environmental science**

the warming of the oceans causing less carbon dioxide to be soluble in them, and at the same time leaving more carbon dioxide in the atmosphere causing an increased warming of the atmosphere, is a example of a a. model of a system showing a paradigm shift. b. negative feedback...

*October 12, 2016*

**environmental science**

1. which of the below is an example of high-quality matter found near the earth's surface? a. natural gas b. mine tailings c. bauxite (al ore) d. recyclable materials in a landfill e. nitrogen gas in the atmosphere

*October 12, 2016*

**math**

trey can clean a room in 40 minutes. his brother Marcus can clean the same room in 20 minutes. how long will it take them to clean the room if they work together?

*October 10, 2016*

**2nd grade math**

Show how to make one addend the next tens number. Complete the new addition sentence 26+27=? Is it 53 (10+43=53)

*October 4, 2016*

**Social studies**

Help pleasee

*September 28, 2016*

**Social studies**

Answer?

*September 28, 2016*

**grammar**

Jf Kennedy was a senator before he president in 1960. became hi my friends ,is that right w became

*September 13, 2016*

**Math**

The number of washers 3/32 inch thick that can be cut from a piece of stock 25 1/2 inches long, allowing 1/16 inch for waste for each cut is A) 160 B) 163 C) 260 D) 272 E) 408 Pls help and explain x

*August 18, 2016*

**Government**

Bills that originate in either house of Congress may be A. Introduced only by party leaders B. Formulated by private citizens C. Introduced by private citizens D. Introduced by the president

*August 1, 2016*

**Calculus**

divide 64 into two parts such that the product of one of them plus the cube of the other is a maximum

*July 28, 2016*

**algebra**

a-6 a-1÷a+2

*June 12, 2016*

**Language arts**

. This question asks about your work in your reading role. You may use your novel to help you answer the question. Think about the work you completed in your reading role. Determine the ideas that would be most worthy to share in a literary discussion about The Giver. Provide ...

*June 6, 2016*

**language arts**

Joe magarac, Man of steel 8. In section 1, what does the author mean when he says joe magarac is a folk hero? A. Joe was a real man who spent his whole life in the steel mills of Pittsburgh. B. Joe was a mysterious figure who vanished without a trace.* C. Joe was a legend ...

*June 2, 2016*

**Math**

If a pulse is 20 beats in 15 second what is the pulse for 1 min.

*May 25, 2016*

**LA**

OK so I think that the answer is Mrs. Crachet. Though you guys don't have to be rude. If you don't like what she has to say then don't say anything other than this is wrong sorry. Plz be nice. :}

*May 23, 2016*

**career**

Matching these ones I really don't have a clue so if you could help here it would be nice but if not I understand Match the following terms with their definitions. A. using the connections among people to help one another reach important goals B. personal readiness and ...

*May 17, 2016*

**ss**

No, if you look at them you see that they are correct. Or did you submit these answer and they were wrong. I think I need proof before I believe you. I went to another site and looked, and they were correct. That is after I did the quiz.

*May 11, 2016*

**Math**

which polynomial does the model represent (Model shows: 1 big black square, 2 long blank rectangles, 3 long rectangles, 3 small blank squares, 1 small blank square) a.) -x^3+2x^2-3x+2 b.)x^2+x-2 c.)-x^2-x+2 d.)-x^2+x-2

*May 10, 2016*

**Math**

Write and simplify the polynomial represented by the model. (Model shows: 3 big blank squares, 2 long black rectangles, 3 small blank squares, 1 big black square, 6 small black squares) a. -2x^2 + 2x + 3 b. 2x^2 - 2x - 3 c. 3x^2 - 2x - 3 d. 2x^2 - 2x + 3

*May 10, 2016*

**Science test review**

Here are all the word you can use I need help chemical property mixture heat capasity homogeneous viscosity sublimitation physical property compound chemical formula substance density mass tempurature pressure heterogenerous 14. A property of matter describes its ability to ...

*May 2, 2016*

**science**

kendra was looking at recipes in a cookbook. she divided some of the steps of a recipe into two columns. How would you label each column? A.) Column A shows sublimation; column B shows vaporization B.) Column A shows vaporization; column B shows sublimation C.) Column A shows ...

*May 2, 2016*

**science**

how do liquid water, ice, and water vapor differ from one another? A.) They are different states of matter B.) They are different compounds C.) They are made of different kinds of molecules. D.) They are mad of different kinds of atoms.

*May 2, 2016*

**science**

Thermal energy is caused by motion of? 1. mixing water molecules contained in a beaker 2. molecules in soild liquid and gas phases 3. mixing molecules together 4. molecules that have reached equilibrium the density of an object with the volume of 60.0 mL and a mass f 400.0 g ...

*May 2, 2016*

**history**

What is the biggest secret if jose rizal??

*April 20, 2016*

**Environmental History**

I know it is not B. It was marked wrong.

*March 17, 2016*

**Environmental History**

A Primary source is: a) the main source that a historian uses in a given book. b) someone interviewed for a story on the Iowa caucuses. c) an especially reliable historical text. d) a record that historians use to understand a past time period.

*March 17, 2016*

**chemistry**

how many grams of silver carbonate will precipitate when excess ammonium carbonate soln is added to 41.0 mL of a .518 M silver nitrate solution?

*March 12, 2016*

**Algebra**

Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x-2) in each expression.] the dogs are 2yrs: 23 yrs old 3yrs: 27 yrs old 4yrs: 31 yrs old 5yrs: 35 yrs ...

*March 1, 2016*

**Physics**

A 20.0 kg block is connected to a 30.0 kg block by a string that passes over a light, frictionless pulley. The 30.0 kg block is connected to a spring that has negligible mass and a force constant of 260 N/m, as shown in the figure below. The spring is unstretched when the ...

*February 27, 2016*

**Social studies**

I took that same quiz and answered the same thing befor I came and checked. Its correct.

*February 17, 2016*

**precalc**

The point (3, -4) is on the terminal side of an angle(theta) . What is cos(theta)

*February 16, 2016*

**History**

its b

*January 29, 2016*

**Math**

find p so that the numbers 7p+2, 5p+12, 2p-1...... form an arithmetic sequence

*January 29, 2016*

**math**

two airplanes travelling in opposite directions , leave an airport at the same time. if one plane averages 480 ml/hr and the other averages 520 ml/hr, how long will it take before they are 2000 ml apart?

*December 11, 2015*

**Algebra 2**

Thank you

*November 24, 2015*

**Algebra 2**

Make predictions about how many times the graph of each equation below will touch the x axis. You may first want to rewrite some of the equations in a more useful form.=(x-2)(x-3). A. y=(x+1)^2 B. y=x^2+6x+9 C. y=x^2+7x+10 D. y=x^2+6x+8 E. y=-x^2-4x-4

*November 24, 2015*

**Math**

7 and 8 tons

*November 11, 2015*

**English index**

What topic is disoussed on page-297

*November 9, 2015*

**Biology**

It simple

*October 30, 2015*

**Plz help @Reed**

For all reading now.. after submitting the test.. the correct answer was that they were interested and informed regarding politics.

*October 23, 2015*

**Algebra 2**

Give one example of a situation where you would make a discrete graph and an example of when you will se a continuous graph.

*October 21, 2015*

**Physics**

4.5m

*October 19, 2015*

**Physics**

The electric field at a distance of 0.150 m from the surface of a solid insulating sphere with radius 0.367 m is 1720 N/C . Assuming the sphere's charge is uniformly distributed, what is the charge density inside it? Calculate the electric field inside the sphere at a ...

*October 3, 2015*

**Physics**

Two passenger trains are passing each other on adjacent tracks. Train A is moving east with a speed of 35.5 m/s, and train B is traveling west with a speed of 33.4 m/s. (a) What is the velocity (taking due east to be the positive direction) of train A as seen by the passengers...

*September 11, 2015*

**Math**

I really need help.

*August 31, 2015*

**Math**

Explain how you can use a straightedge and a compass to construct an angle that is both congruent and adjacent to a given angle.

*August 31, 2015*

**6th grade math**

6 right?

*July 30, 2015*

**6th grade math**

Ms. Sue, why couldn't you divide 10/3.5 and 8/2.5 instead?

*July 30, 2015*

**Criminal Justice**

Thanks

*July 30, 2015*

**Algebra1**

Can you explain to me why? Thanks!

*July 20, 2015*

**Algebra1**

John is working the function s(x). He found that s(2)=-6 Matthew is working with the function t(x). He found that t(2)=-6 The point (2,-6) lies on the graph of s(x) and t(x). True or False?

*July 20, 2015*

**Algebra1**

It's 7=7. So it does represent line l, right?

*July 20, 2015*

**Algebra1**

Consider the point (5,7) which lies on line l in the coordinate plane. Could y=7/5x represent line l?

*July 20, 2015*

**Geology**

True or False: Longshore drift is the movement of sediment sideways down the shoreline.

*July 15, 2015*

**literature/poetry**

ik

*April 28, 2015*

**physics**

a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up, how high will the bullet go?

*April 23, 2015*

**physics**

A 25 gram arrow fired from a bow has a speed of 80m/s. The energy in the arrow came from work done by the bow that acted over a 1m "draw" distance. What average force acted on the arrow over this distance?

*April 23, 2015*

**Chemistry**

What is the volume of 2.0 moles of an ideal gas at 290 K and 2.8 atm?

*April 21, 2015*

**math**

1,384,500

*April 10, 2015*

**math**

If r = 7 m then d = what c = what

*March 1, 2015*

**social studies. NEED HELP ASAP**

I did the same thing it is actually C. A and D. just do the work yourself.

*February 18, 2015*

**Art check please**

Thanks Miss Sue you really helped me out.

*January 23, 2015*

**math**

Ur mom

*January 10, 2015*

**MATH**

Suzanna needs a board that is at 3.5 meters long. is the board long enough Explain

*December 14, 2014*

**math**

Suzanna does not have a ruler but she has a several books that is 17 centimeters tall. Suzanna lays the books end to end and finds tat the board is the same length as 21 books. How many centimeters long is the board

*December 14, 2014*

**Science.. Need help ASAP!**

Thx so much for this I just took this as well and it help me a lot. I put down all of these anyway but I checked to make sure. THX!

*December 1, 2014*

**Math**

What fraction equals 1/2

*November 25, 2014*

**jj**

you are a manufacturer of antacids. you could use either mg (oh)2 or al(oh)3 in your formulation. you can buy either of these for $2.00 per pound . which of these will provide a better product (i.e., give more relief) for the same amount of money ? explain your answer

*November 13, 2014*

**math**

most of them are i think

*November 11, 2014*

**algebra**

Suppose y varies directly with x. Write an equation relating x and y. 645-09-05-00-00_files/i0130000.jpg a. y = 6x c. y = 7x b. y = x d. y = − x

*November 6, 2014*

**chemical calculations**

Brine from a first tank runs into a second tank at 2 gallons per minute and brine from the second tank runs into the first at 1 gallon per minute.Initially,there are 10 gallons of brine containing 20 lb of salt in the first tank and 10 gallons of fresh water in the second tank...

*November 6, 2014*

**Science**

thanks

*October 28, 2014*

**Science**

How might genetically engineered crops help people in hash climates?

*October 28, 2014*

**pyhsics**

A man drops a rock off the side of a cliff, and hears it hit the bottom 2.8 seconds later. If the average speed of sound is 335 m/s, how high is the cliff? I have been able to figure out this much, but I don't know how to solve the problem with the data that I have been ...

*October 24, 2014*

**english**

the speaker in birches compares the boy's climbing to

*October 21, 2014*

**chemistry**

130 mL

*October 17, 2014*

**Algebra2**

so on 2^7i list i as -1 seven times equals out -1 or -i then what i still cant solve i^100

*October 16, 2014*

**Algebra2**

write a equation of a line that is perpendicular to y=-2/3-5 and goes through -4,3

*October 16, 2014*

**Algebra2**

so on 2^7i list i as -1 seven times equals out -1 or -i then what i still cant solve i^100

*October 16, 2014*

**Algebra2**

2i^7 i^42 i^100

*October 16, 2014*