# Riley

Popular questions and responses by Riley-
## Math

On the spinner below, what is P(odd) The numbers on the spinner are 13543256 Answers A. 5/8 B. 5/3 C. 1/2

*asked on May 25, 2017* -
## Economics

You discover a new clothing store (Store X) across the street from an existing department store (Store Y). Both stores offer the same brands and styles of T-shirts. However, Store X offers their clothing for less. How might this event affect the demand

*asked on June 9, 2020* -
## CHEMISTRY

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C, the molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat capacity of water is 4.18 J/g°C, calculate

*asked on November 2, 2010* -
## Math

Which of the following transformations will never produce a congruent figure? A. rotation B. reflection C. translation D. dilation

*asked on May 22, 2014* -
## Chemistry

What is the net ionic equation for this reaction? 3CuCl2(aq) + 2K3PO4(aq) = Cu3(PO4)2(s) + 6KCl(aq)

*asked on October 8, 2019* -
## physics

A mountaineer is doing a vertical rappel. She is using a big boulder/stone as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refrigerator. The boulder should be sitting on a surface

*asked on June 13, 2017* -
## Math

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types

*asked on December 19, 2015* -
## chemistry

Consider the following double displacement reactions. For each reaction, complete and balance the equation and give the net ionic equation. NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl the second half of the equation is what I had done but I think its not

*asked on November 11, 2010* -
## Science

I need an acrostic poem for the word waves.

*asked on November 8, 2017* -
## Algebra Help me Please

Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle

*asked on April 26, 2016* -
## Physics

Two charges (+4C and -3C)are separated by .00002m. What is the electrostatic force and its direction? Using Coulomb's law, I arrived at 2.696 x 10^20 J. Would the direction be said to be "towards the positive charge"? Is this correct? Thanks

*asked on January 30, 2008* -
## physics

A mountaineer is doing a vertical rappel. She is using a big boulder as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refigerator and should be sitting on a surface that is

*asked on June 12, 2017* -
## Health

I'm worried I might be having petit mal seizures. Every so often, I am doing something, then I lapse out for a few seconds then suddenly regain awareness. I still can see during this time, but my thoughts are interrupted, not by other thoughts, but just by

*asked on October 30, 2009* -
## Physics

Two charges 10uC (point A) and -10uC (point B) are placed 10cm from each other. Find the electric field at a point P perpendicular bisector of AB at a distance 12cm from the middle. Can someone get me started on this one? I'd appreciate any help. Thanks

*asked on January 31, 2008* -
## math

The diameter and the slant height of a cone are both 24 cm. Find the radius of the largest sphere that can be placed inside the cone. (The sphere is therefore tangent to the base of the cone.) The sphere occupies a certain percentage of the cone’s

*asked on February 13, 2017* -
## STATISTICS

A study of college football games shows that the number of holding penalties assessed has a mean of penalties per game and a standard deviation of penalties per game. What is the probability that, for a sample of college games to be played next week, the

*asked on October 24, 2016* -
## math

Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?

*asked on January 12, 2016* -
## Pre-Calculus

If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)

*asked on November 14, 2010* -
## Chemistry

When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0320C . The molar mass of the unknown compound is ? g/mol. (The freezing point depression constant for benzene is 512C kgmol .

*asked on April 7, 2008* -
## physics

A plane is in a steep downward plunge. To not crash, captain Q pulls as much as he can. When the plane is at the lowest point of the plane's path the plane is in a circular arc of radius 450m. Captain Q experiences an acceleration of 5.0g ( so her weight

*asked on July 9, 2017* -
## physics

A few children are playing around the carousel at the park. You see that one of them can't hold on to the edge of the carousel ( that has a radius of 2m) when it takes less than 3.0s to do one full revolution. a) what's the acceleration that the kid can

*asked on July 9, 2017* -
## Chemistry

AgNO3 + NaCl -> AgCl + NaNO3 Which statement about this reaction is FALSE? A. This is one kind of metathesis reaction, where molecules exchange atoms. B. This reaction produces a gas. C. This is a precipitation reaction. D. The equation is balanced.

*asked on April 17, 2017* -
## Chemistry

A sample of Chlorine occupies 8.50 L at 80.0 C and 740 mm Hg. What volume will Chlorine occupy at STP?

*asked on November 27, 2016* -
## stats

Anita's a fast food chain specializing in hotdogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant so it can make decisions reguarding possible construction of the in-store play areas.the attendance of

*asked on October 1, 2016* -
## English

I need some help with the answers to these questions, (mainly to see if I'm correct, where I'm wrong and WHY I'm wrong) 1. What is the verb mood of the sentence below? Wear your coat when you are in the school indicative mood imperative mood ***my answer

*asked on January 21, 2016* -
## Algebra 2 (Math)

What is the vertex form of the equation? y = -x^2 + 12x - 4. I have no clue how to do this.

*asked on December 14, 2015* -
## Chemistry

The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: P4(s) + 6 Cl2(g) → 4 PCl3(l) If 19.47 g P4 is mixed with 6.85 g Cl2, calculate the theoretical yield

*asked on November 26, 2015* -
## Calc

A beach ball is deflating at a constant rate of 10 cubic centimeters per second. When the volume of the ball is 256/3(pi) cubic centimeters, what is the rate of change of the surface area? (S=4(pi)r^2 and V=4/3(pi)r^3)

*asked on December 22, 2014* -
## Algebra

A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth

*asked on September 23, 2014* -
## Physics

A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted

*asked on February 20, 2012* -
## Physics

An airline pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25.0 N for 10.0 meters. The handle she pulls on makes an angle of 42.5 degrees with the horizontal. How much work does she do over the ten-meter distance? Tried doing:

*asked on January 12, 2012* -
## physics

A 4.63-g bullet is moving horizontally with a velocity of +349 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is

*asked on October 15, 2011* -
## physics

Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another, as in Figure 7.10, and move in opposite directions with different speeds. While they are pushing against each other, any kinetic

*asked on October 15, 2011* -
## exam study math guide CRUICAL

The average of Anne's, Sara's, and Julie's test score is 72. Julie scored 100 and Anne scored 10 points higher than Sara.what were annes and saras scores?

*asked on December 11, 2010* -
## Social Studies/ World History

Hammurabi’s Code Hammurabi’s Code listed 282 laws dealing with a variety of subjects. A few examples of these laws are listed below. 196. If a man put out the eye of another man, his eye shall be put out. 197. If he breaks another man’s bone, his

*asked on August 16, 2010* -
## Mathematics

A right circular cone of base radius r cm and height h cm fits exactly into a sphere of internal radius 12cm. a)Express r in terms of h. b)If the volume of the cone is Vcm cube, show that V=8¶h^2 - 1/3¶h^3 c)Find the value of r for which V has a turning

*asked on June 19, 2009* -
## Physics

Jordan is trying to loosen a stuck bolt in his motor home. To loosen it ,he is using a wrench that is 60cm long. If he hangs from the wrench, what is max torque he can exert ? Jordan is 75kg

*asked on July 14, 2017* -
## physics

A firework whose mass is 7kg is launched vertically up into the air. After it reaches its the height of 160m, it blasts and splits into two pieces; pieces A and B. The two pieces fly off and travel horizontally. The blasts of the fireworks lasts 10ms.

*asked on July 4, 2017* -
## physics

Two boxes are connected by a cord running over a pulley. Box A is on a table and Box B is hanging off of the pulley. The system is released from rest and Box B drops a distance D. What is the word done by gravity on box B?

*asked on June 12, 2017* -
## physics

Two books are stacked on top of each other. Book 1 is on top of Book 2. Book 1 has a string attached to it. The string is connected to the wall. The wall is to the left of the stacked Books. Book 2 is pulled to the right with a force F big enough to move

*asked on June 4, 2017* -
## English

Would I need to put (Emerson) for each one of the quotes in this sentence? And is the commas placed correctly? This is for an reflection essay and I have already mentioned the title of where I got these quotes from before this sentence and I am only

*asked on April 30, 2017* -
## Math

Six of the classes at your school are going to the pool for swimming party that means 125 students need to get on buses in each bus holds 48 students how many buses with the school need?

*asked on March 1, 2017* -
## Stats

The workers union at a certain university is quite strong. About 94% of all workers employed by the university belong to the workers union. Recently, the workers went on strike and now a local TV station plans to interview a sample of 20 workers ,chosen at

*asked on October 1, 2016* -
## Algebra

whats the answers to the "why are mr. and mrs. number so happy

*asked on September 22, 2016* -
## math

Charlie can type faster than any of his classmates. He took a test that showed he can type 700 words in 5 minutes . How many words can he type per minute

*asked on December 6, 2015* -
## math

On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.

*asked on April 1, 2015* -
## Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 = 416 N, 10 degrees to the left of north and F2 = 356 N, 30 degrees to the right of north. What is the sum of these two forces

*asked on September 12, 2014* -
## Physics

A 540 g block is released from rest at height h0 above a vertical spring with spring constant k = 320 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 19.8 cm. How much work is done (a) by the block

*asked on March 10, 2014* -
## Physics

An ideal monatomic gas goes from p1 = 180 atm and V1 = 45 m3 to p2 and V2 through an adiabatic process. If p2 = 60 atm, what is V2?

*asked on February 3, 2014* -
## math

I'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured into the tank. How many containers of water are needed to fill the tank? What is the formula to finding this?

*asked on May 10, 2012* -
## Chemistry

A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the

*asked on March 18, 2012* -
## Physics

A hockey stick applies a constant force over a distance of 0.127 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?

*asked on January 12, 2012* -
## math

the avreage of annes saras and julies test score is 72 julie scored 10 and anne scored 10 points higer than sara. what were annes and sara scores?

*asked on December 5, 2010* -
## CHEMISTRY

1. What is another name for freezing, the opposite of melting? 2. What happens to the boiling point of water when you measure it at high altitudes? 3. What intermolecular forces act in the following: H2PH3 CH3NH2 4. Give an example of an atomic solid?

*asked on November 3, 2010* -
## chemistry

The "Chemistry in Focus" segment A Magnetic Moment discusses the ability to levitate a frog in a magnetic field because electrons, when sensing a strong magnetic field, respond by opposing it. This is called diamagnetism. Atoms that are diamagnetic have

*asked on October 12, 2010* -
## physics

One cool 5.0 degree C spring morning, Mason lays a brick sidewalk up to his house, placing the 25 cm long bricks end to end against eachother. However, Mason forgets to leave a space for expansion and when the temperature reaches 36 degree C, the bricks

*asked on July 27, 2010* -
## physics

A water tower sits on top of a hill and supplies water to citizens below. The difference in pressure between the water tower and the Dailey's house is 1.1x10^5 Pa, while the difference in pressure between the tower and the Stearns' house is 3.2x10^5 Pa.

*asked on July 27, 2010* -
## Math

Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to least. Both times the same n umber was third in order.

*asked on March 10, 2010* -
## Calculus

Find an equation of the line through the point (3,5) that cuts off the least area from the first quadrant. How do I solve? I am stuck. The only thing I can come with is this: y-5=m(x-3) How to use this I don't know.

*asked on April 22, 2009* -
## calculus

(a) find the intervals on which f is incrs or decrs. (b) find the local min/max values of f. (c) find the intervals of concavity and the inflection points. f(x)=(lnx)/sqrtx I took the derivative and got 2-lnx/2x^3/2 take the values when f'(x) >0 I get

*asked on April 6, 2009* -
## calculus

I need help simplifying this problem. f(x)=x^4/5(x-4)^2 f'(x)=x^4/5*2(x-4)+(x-4)^2*4/5x^-1/5 it is suposed to end up as this: 1/5x^-1/5(x-4)[5*x*2+(x-4)*4] but how do i get it to there? I need to see all the steps and how to get them. Thanks

*asked on March 31, 2009* -
## College Stats

A machine fills 64 ounce detergent jugs. It is known that the net amount of detergent poured into each jug has a normal distribution with a standard deviation of 0.35 ounces. The inspector wants to adjust the machine such that at least 95% of the jugs have

*asked on October 28, 2008* -
## Chemistry

A solution is made by mixing 25.0 mL of toluene C6H5CH3 d=0867gmL with 135.0 mL of benzene C6H6 d=0874gmL . Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are how would i start this problem?

*asked on April 7, 2008* -
## us history

The most useful indicator of the degree of democracy reached by a particular society is whether it has a... formal method whereby people can effect changes in government policy, system of government checks and balances, two-house legislature, system of

*asked on October 9, 2007* -
## math

whats the product of 1 2/3 and 3 and 3/4 ?

*asked on May 12, 2020* -
## English

only with ice: _ _ _ _ _ rock_

*asked on March 13, 2020* -
## English

How can I tell If a source is credible or not like what are the signs of it being legit and accurate? My English teacher did not explain thoroughly.

*asked on March 12, 2020* -
## Chemistry

In a constant‑pressure calorimeter, 75.0mL of 0.950 M H2SO4 was added to 75.0 mL of 0.250 M NaOH. The reaction caused the temperature of the solution to rise from 23.24∘C to 24.94∘C. If the solution has the same density and specific heat as water

*asked on February 3, 2020* -
## Economics

Suppose you take a loan of $1000 today at a compound interest of 10 percent. Calculate the loan amount at the end of year 2. Thanks!!!

*asked on December 4, 2019* -
## Biology

In biology, would effectiveness and neutralizing mean the same thing for anti-acids? Like if alka-seltzer was more effective than tums, would it make it a better neutralizer?

*asked on September 3, 2019* -
## Chemistry

In the reaction Ca → Ca2+ + 2e-, Ca is __________. A:reduced because it gains electrons B:reduced because it loses electrons C:oxidized because it gains electrons D:oxidized because it loses electrons

*asked on May 24, 2019* -
## geography

The economic centers of the northeast are the regions

*asked on March 1, 2019* -
## Science

1 Why is the area around the divergent boundary also known as the sea floor spreading 2 Features can be found around the sea floor spreading zone that indicates the plates are moving apart 3 Why do most seafloor spreading zones usually occur under water 4

*asked on January 6, 2019* -
## Science

1 Why is the area around the convergent boundary also known as The zone of subduction 2 what features can be found around the zone of subduction that indicates the plates are smashing together 3why does one plate sink under another 4 what part of the

*asked on January 6, 2019* -
## Math

This is my first time using this site so this is a test to see if anyone will actually help and how long it takes for a response so plz when you see this write I saw this plz

*asked on November 28, 2018* -
## Algebra readiness(pre-algebra)

Im confused on this test 1.which of the following is greater than 4.3×10^9 A.)2.1×10^9 B.)3.2×10^9 C.)5.3×10^9 D.)7.4×10^8 If possible I need help with all questions

*asked on October 28, 2018* -
## English

24. Your responses include the following to receive the points in parentheses: ~ Respond in one or two paragraphs. Answer is written in complete sentences. Write one or two paragraphs to answer the question below. Include at least two supporting details or

*asked on October 25, 2018* -
## Physics

A skater of mass 80.5 kg initially moves in a straight line at a speed of 4.90 m/s. The skater approaches a child of mass 41.0 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?

*asked on October 22, 2018* -
## Algbra 1

x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

*asked on May 11, 2018* -
## Language Arts

how does alliteration add to the description of the scene

*asked on May 9, 2018* -
## MATH

Owen deposited $900 in a savings account with simple interest. Two years later, he had earned $144 in interest. What was the interest rate?

*asked on April 10, 2018* -
## Science

Which of following is not an igneous rock. Pumice Obsidion Or limestone

*asked on November 6, 2017* -
## college algebra

List the x value of each real zero and its multiplicity. List them in increasing order. If a listed zero does not exist, enter DNE in both fields.

*asked on October 22, 2017* -
## Math

What is 1/7 multiplied by 2/4 divided by 2/9 added by 5/6 subtracted by 3/5?

*asked on September 13, 2017* -
## physics

On planet Earth, a pendulum has a length of L and a period of T .On planet Mars, the pendulum has a length of 4L and period of 5T.what is the acceleration due to gravity ?

*asked on July 30, 2017* -
## physics

A wheel has an initial velocity of 3.40rad/s and it rotates 1.25 revolutions before stopping what is the angular acceleration of the wheel how long does it take for the wheel to come to rest

*asked on July 20, 2017* -
## Physics

A 30m bar with a mass of 20kg is being lifted by a string. The bar makes an angle of 55 degrees above horizontal (between the bar and ground). The string is attached to the ceiling vertically. What is the tension on the string? What is the normal force

*asked on July 16, 2017* -
## Physics

A bar with a mass of 20kg with a length of 30m is being lifted by a string and makes an angle of 55 degrees. The string is attached to the ceiling vertically. What is the tension on the string? What is the normal force given by the bar on the string what

*asked on July 16, 2017* -
## physics

A patient is getting his elbow rehabilitated. He is told to lay his elbow flat on a table and lift a a 3.5kg weight by bending his elbow( he's raising his forearm itself and the weight). The weight is 30cm from his elbow. After telling his therapist that

*asked on July 14, 2017* -
## physics

A tick is standing on a turntable at distance r from the centre. The static friction coefficient between the tick and table is us. The table is spinning at a constant angular frequency of w a) what values of r is the bug most likely to slip at? small or

*asked on July 11, 2017* -
## physics

A kid places a toy on the outermost edge of a merry go round. The amusement park ride has a radius R and period T. What is the smallest value of us (static friction coefficient) between the toy and merry go round where the toy is able to stay on the ride?

*asked on July 9, 2017* -
## physics

Suppose that a car wheel is spinning with angular velocity of wo. The car is then turned off and the wheel start to slow down because of friction and angular acceleration is constant. The wheel comes to rest after it has made X revolutions. What is the

*asked on July 4, 2017* -
## physics

Ball 1 is moving to the right at speed Vo when it collides with ball 2 - is initially at rest. After the collision, ball 1 's initial KE decreases by 80% and has a velocity at an angle of 40 degress below the horizontal. what fraction of the initial KE

*asked on July 3, 2017* -
## Chemistry

The pressure changes from 760mmHg to 742 mmHG. When that occurs, the volume changes from 2.8L to 3.1L. The initial tempature is 20 celcious. What is the new tempature if miles remain the same? When I did this I subtracted 760 to 742 to get 18 and

*asked on June 13, 2017* -
## physics

Why is that a lighter object with the higher velocity produces a higher kinetic energy than a heavier object with lower velocity ?

*asked on June 12, 2017* -
## physics

A detective is investigating a scene of an accident. He measures the length of an automobile's skid marks to find out how fast the automobile was going at the very beginning of the skid. Express In terms of V ( speed), L ( length) and any other suitable

*asked on June 10, 2017* -
## physics

A block of mass m is pressed against a vertical wall with a force F acting at an angle theta. What are the maximum and minimum forces of F that can be applied and still have the block remain stationary?

*asked on June 5, 2017* -
## Math

A set of stairs has a rise of 6 inches and a run of 9 inches. The building safety code says the stairs should rise at an angle of between 30 degrees and 35 degrees. Does this set of stairs meet the safety regulations? Justify your answer by showing

*asked on May 5, 2017* -
## Math

A ramp has a slope of 0.25. If the rise is 4 feet, what is the horizontal distance covered by the ramp?

*asked on May 5, 2017* -
## Climate

Which of the following statements about climate is FALSE? A. Deserts usually occur at very low altitudes. B. Temperatures usually decrease with altitude. C. Coastal temperatures are usually cooler than inland temperatures. D. The southern hemisphere is

*asked on March 6, 2017*