# Posts by jj

Total # Posts: 1,089

**Anatomy**

C

**maths**

I think it's C

**Matrices **

Prove that ab=(a,b)[a,b]

**Math**

I think its 72440 that make it divisible can you chek if im right.

**Math**

Find the digit that makes blank 2440 divisible by 9 test help im behind allot help.

**math**

What is the value of 14 – a2 given a = –3? A. 23 B. 11 C. 8 D. 5

**math**

What is the value of 14 – a2 given a = –3?

**physics**

Given the graph below with the initial velocity, vi = -8 m/s, the object starts with one value of constant acceleration and stops at 2.3 seconds. Then, the value of its acceleration changes to a different acceleration. Finally, at t1 = 6.8 seconds, it travels at a constant (...

**social study**

why were the islands shown on this map most likely acquired or annexed by the united states

**Chemistry**

I'm trying to find ____ liters carbon dioxide

**Chemistry **

what volume of carbon dioxide is produced when 49.7g of calcium carbonate reacts completely according to the following reaction at 25C and 1atm? 25C=298K R= 8.31441 J K-1 mol-1 101325 x V= 49.7x8.31441x298 V= 49.7x8.31441x298 101325 =1.2153 m3 Please help am I even on the ...

**Science **

You digestive system has three main functions: digestion, absorption, and elimination. In which organ does absorption begin? A. Mouth*** B. Stomach C. Small Intestine D. Gall bladder

**math**

A prism is completely filled with 96 cubes that have edge length of 12 cm. What is the volume of the prism?

**math**

4/5+3/5

**Math! Help Hurry!**

16cm

**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 ...

**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?

**social studies?**

free lunch

**social studies?**

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

**Heath**

Which source is the best to follow if you were looking to buy a facial and message spa package for your mom for Mother's Day?

**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]

**AP Language-Inductive/Deductive**

hh

**Algebra 2**

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

**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

**Social studies**

Thanks

**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 ...

**Math**

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

**Weird question science**

I agree this whole unit is a little disturbing. Lun is wright, the answers are D B C A

**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

**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?

**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?

**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 ...

**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?

**environmental science**

4. my answer is B

**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 ...

**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...

**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

**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?

**Social Studies**

Who is right? Savanna or Spooky?

**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)

**Social studies**

Help pleasee

**Social studies**

Answer?

**grammar**

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

**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

**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

**Calculus**

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

**Math**

You have five friends. A serving of ice cream is 3/4 cups. How many cups of ice cream would it take to feed all five of your friends?

**algebra**

a-6 a-1÷a+2

**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 ...

**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 ...

**Math**

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

**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. :}

**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 ...

**dragon wings**

Amanda is wright, I just did the assessment and the answer is: D D B D

**math**

Numbers 3 and 5 are wrong the correct answers are 3.b 5.b

**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.

**Language arts**

YAY! thx Im the Queeeeen

**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

**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

**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 ...

**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 ...

**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.

**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 ...

**Language arts**

Ms. Sue has helped me alot, but this time she was wrong, I have a suspicion that that's someone else, the developers didn't make the names trademarked or anything, so PLZ don't blame the real Ms. Sue. The correct answers are: 1. C 2. D 3. A 4. D

**Physics**

hkyj

**history**

What is the biggest secret if jose rizal??

**Environmental History**

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

**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.

**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?

**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 ...

**Social Studies**

This answer is wrong!

**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 ...

**Social studies**

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

**precalc**

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

**History**

its b

**Math**

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

**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?

**health**

a and d

**health**

no its a and b I put JDogs answer it wrong

**Algebra**

What?!

**Algebra 2**

Thank you

**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

**Math**

7 and 8 tons

**English index**

What topic is disoussed on page-297

**Biology**

It simple

**Science**

thanks

**Plz help @Reed**

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

**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.

**Physics**

4.5m

**Social Studies**

kat is right I got 100%, thx kat

**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 ...

**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...

**Math**

I really need help.

**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.

**6th grade math**

6 right?

**6th grade math**

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

**Criminal Justice**

Thanks