# Riley

Newest questions and responses by Riley-
## 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

I need an acrostic poem for the word waves.

*asked on November 8, 2017* -
## 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

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 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 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* -
## 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

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

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* -
## 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* -
## 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

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* -
## 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

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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## Algebra

Ken has recently started saving his spare change. In his piggy bank, he has $1.65 that consists of nickels and dimes. The number of nickels is one more than two times the number of dimes. Find how many of each coin he has

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

Ken has recently started saving his spare change. In his piggy bank, he has $1.65 that consists of nickels and dimes. The number of nickels is one more than two times the number of dimes. Find how many of each coin he has

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

You have been hired as a consultant for Pristine Urban-Tech Zither, Inc. (PUTZ), manufacturers of fine zithers. The market for zithers is growing quickly. The company bought some land three years ago for $1.30 million in anticipation of using it as a toxic

*asked on October 26, 2016* -
## STATISTICS

Suppose that a researcher is interested in estimating the mean systolic blood pressure, , of executives of major corporations. He plans to use the blood pressures of a random sample of executives of major corporations to estimate . Assuming that the

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

What was the primary purpose of the Constitutional convention of 1787? A. Outlaw slavery In both the north and south B. Place taxes on the imports and exports C. Revise the articles of confederation D. Reduce the power of the federal government

*asked on October 17, 2016* -
## algebra

A wire 20 cm long is cut into two pieces. The longer piece is 4 cm longer than the shorter piece.

*asked on October 5, 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* -
## 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

The dimensions or a fish tank ( rectangular prism ) are x, 3x+2, and 2x-4. Express the volume of the fish tank as a simplified polynomial.

*asked on September 1, 2016* -
## Social studies

Which form of government gives independent rights and policy making decisions to smaller regions of the country which cannot be overridden by the main government

*asked on August 25, 2016* -
## 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* -
## 5th Grade Math

If one side of a triangle is 54 cm and the other is 35 cm what is the third side? Two sides have to be longer than the other so I think it is 54 cm

*asked on April 18, 2016* -
## Language Arts

Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or

*asked on February 27, 2016* -
## 4grade math

What is the probability of rolling a cube?

*asked on February 15, 2016* -
## civics

Federal courts may declare illegal any action violating the Constitution. -Will this be the principle of Rule of Law

*asked on February 10, 2016* -
## Algebra 2

Write the equation of a trend line. {(-10, 3), (-5, 1), (-1, -4), (3, -7), (12, -12)} How do I do this problem?

*asked on February 4, 2016* -
## science

if your doing an experiment about if sugar or salt will caused fermentation within the yeast.and you have Cup 1 with 2 cup of warm water ;2tsp of yeast and 2tsp of salt. Than cup 2 contains warm 2 cups of water:2tsp of salt and 2tsp of yeast Finally cup 3(

*asked on January 24, 2016* -
## Math

Two railroad tracks cross each other if the measure of angle 1 is 3 times the measure of angle 2, what are the measures of angles 1,2,3, and 4? Explain and show your work

*asked on January 24, 2016* -
## science

if your doing an experiment about if sugar or salt will caused fermentation within the yeast.and you have Cup 1 with warm water ;yeast and sugar than cup 2 contains warm water:salt and yeast Finally cup 3 you have warm water and yeast will cup 3 be the

*asked on January 22, 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* -
## Conversion

an olympic athlete can run 110 years in 10 seconds. How fast in miles per hour can the athlete run?

*asked on January 12, 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* -
## Algebra 1 Solving Systems Using Elimination

What is the solution of the system? y = -3x 3x + 2y = 6 (2, 6) (-1, 3) (-2, 6) (1.5, -4.5)

*asked on December 28, 2015* -
## Algebra 1

Write an equation in point-slope form for the line through the given point with the given slope 5, 2); m = 3 y + 2 = 3(x - 5) y + 2 = 3x - 5 y - 2 = 3(x + 5) y - 2 = 3(x - 5)

*asked on December 28, 2015* -
## 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* -
## math

Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit bats and then released them. Several weeks later, they captured 20 fruit bats at the same location. They found that 4 of those fruit bats

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

how is trna made and how dose it help us make proteins

*asked on December 10, 2015* -
## 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* -
## 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* -
## 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* -
## History

How did Squanto help the colonists in New England

*asked on January 28, 2015* -
## History

Which part of North America did LaSalle claim for France in1684

*asked on January 28, 2015* -
## History

In what present day states did the Dutch establish new Netherland?

*asked on January 28, 2015* -
## History

What were the differences between primary and secondary resources in 1684?

*asked on January 28, 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* -
## Chem

Find the exerted pressure in kpa Volume=0.05L Mass=5 Atmospheric pressure =764mm Hg Temperature=21degree Celsius Cross sectional area plunger 5.3 x10-4

*asked on November 11, 2014* -
## Algebra

X-3y=9 2x-y=-2

*asked on October 21, 2014* -
## c programming

a student designed a program to accept the age of an employee and then compute the employees retirement year and display the same in a statement on the screen required. a) write out the pseudo-code for the program above b) write the algorithm, c) flowchart

*asked on October 14, 2014* -
## Math

This is a bonus question. If the modes of a problem are13 and15 and the mean and the median are 15 how do you come up with the other numbers

*asked on September 30, 2014* -
## English/language arts

What is the complete subject in the sentence That orange deposit on the outside surface is called rust.

*asked on September 24, 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

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* -
## Civics

Explain how federal income taxes support the economy and benefit the common good. I have to have at least one well-developed paragraph, and this question is worth 10 points which is why I need help!!

*asked on June 11, 2014* -
## 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* -
## Math

1)Let AB be the directed line segment beginning at point A(1 , 1) and ending at point B(-4 , 6). Find the point P on the line segment that partitions the line segment into the segments AP and PB at a ratio of 5:1. A)(-3 1/6,5 1/6) B)(1/6,1 5/6)

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

Use experimental probability to make a prediction. John made 35 free throws and missed 15. Predict the number of free throws he will make in the next 100 tries. A. 70 B. 85 C. 55 D. 45

*asked on May 2, 2014* -
## Physics

A rope is used to pull a 5.19 kg block at constant speed 3.38 m along a horizontal floor. The force on the block from the rope is 3.23 N and directed 20.0° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal

*asked on March 10, 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

Damon, this is my last question for today for you. Thanks for all your help. A gas is at an initial pressure of 1.24104 Pa and occupies a volume of 0.28 m3. The (slow) addition of 23,570 cal of heat to the system causes it to expand in an isobaric manner

*asked on February 3, 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* -
## Physics

An ideal gas heat engine operates in a Carnot Cycle between temperatures of 266 and 115°C. It absorbs 4250 cal per cycle at 266°C. What is its efficiency as a percentage?

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

A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)

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

How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.

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

An aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added.

*asked on February 3, 2014*