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Riley

Questions (238)

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
1. 4 answers
2. 4,520 views
an olympic athlete can run 110 years in 10 seconds. How fast in miles per hour can the athlete run?
1. 2 answers
2. 1,007 views
Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?
1. 5 answers
2. 2,441 views
What is the solution of the system?y = -3x 3x + 2y = 6 (2, 6) (-1, 3) (-2, 6) (1.5, -4.5)
1. 3 answers
2. 1,016 views
Write an equation in point-slope form for the line through the given point with the given slope 5, 2); m = 3y + 2 = 3(x - 5) y +
1. 1 answer
2. 404 views
Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:y > 3x
1. 1 answer
2. 2,034 views
Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit bats and then released them. Several
1. 1 answer
2. 1,062 views
What is the vertex form of the equation? y = -x^2 + 12x - 4. I have no clue how to do this.
1. 2 answers
2. 3,165 views
how is trna made and how dose it help us make proteins
1. 1 answer
2. 415 views
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
1. 3 answers
2. 1,441 views
The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to
1. 1 answer
2. 1,026 views
On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.
1. 2 answers
2. 3,637 views
How did Squanto help the colonists in New England
1. 2 answers
2. 584 views
Which part of North America did LaSalle claim for France in1684
1. 1 answer
2. 703 views
In what present day states did the Dutch establish new Netherland?
1. 1 answer
2. 663 views
What were the differences between primary and secondary resources in 1684?
1. 1 answer
2. 415 views
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
1. 2 answers
2. 6,997 views
Find the exerted pressure in kpaVolume=0.05L Mass=5 Atmospheric pressure =764mm Hg Temperature=21degree Celsius Cross sectional
1. 1 answer
2. 488 views
X-3y=92x-y=-2
1. 1 answer
2. 378 views
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
1. 1 answer
2. 346 views
What is the complete subject in the sentenceThat orange deposit on the outside surface is called rust.
1. 5 answers
2. 606 views
A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven.
1. 0 answers
2. 666 views
Two forces are applied to a car in an effort to move it, as shown in the following figure (cannot attach picture), where F1 =
1. 1 answer
2. 665 views
Explain how federal income taxes support the economy and benefit the common good.I have to have at least one well-developed
1. 2 answers
2. 677 views
Which of the following transformations will never produce a congruent figure?A. rotation B. reflection C. translation D.
1. 6 answers
2. 8,040 views
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
1. 3 answers
2. 3,015 views
Use experimental probability to make a prediction.John made 35 free throws and missed 15. Predict the number of free throws he
1. 4 answers
2. 1,175 views
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
1. 1 answer
2. 623 views
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.
1. 1 answer
2. 1,750 views
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
1. 1 answer
2. 451 views
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
1. 1 answer
2. 506 views
An ideal gas heat engine operates in a Carnot Cycle between temperatures of 266 and 115°C. It absorbs 4250 cal per cycle at
1. 1 answer
2. 642 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
1. 1 answer
2. 583 views
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
1. 3 answers
2. 563 views
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
1. 1 answer
2. 646 views
A weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat
1. 1 answer
2. 583 views
A weight lifter manages to lift a 147 kg weight a distance of 1.1 m. Treat her as a thermodynamic system and find how much heat
1. 0 answers
2. 588 views
A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas
1. 5 answers
2. 821 views
A can of gasoline has a rectangular base with dimensions of 13.5 cm by 13 cm. If there are 3 liters of gasoline in the can, how
1. 1 answer
2. 845 views
By what amount will a 178 m long concrete slab on the Mackinac Bridge contract when going from +39C to -35C? The linear
1. 5 answers
2. 560 views
To find out which key will open a lock, you try several until one works. This kind of learning is called
1. 3 answers
2. 525 views
1. A gold atom has a mass of 3.287 • 10-25 kg and is at rest. It emits an alpha particle that has a mass of 6.646 • 10-27
1. 3 answers
2. 764 views
A rancher wants to fence in a rectangular area of 23000 square feet in a field and then divide the region in half with a fence
1. 1 answer
2. 2,834 views
A 67.0 kg astronaut on the planet Zircon (mass = 1.15 x 1023 kg and radius = 2.00 x 106 m) tosses a 8.00 g frog astronaut (a
1. 0 answers
2. 501 views
An archer shoots a 54.6 g arrow horizontally at a target 14.0 m away. The arrow is 18.0 inches long. The 54.6 g arrow is aimed
1. 0 answers
2. 779 views
1/8(2sin2x-sin4x)= cosxsin^3x prove
1. 1 answer
2. 475 views
Calculate the ATPs resulting from the total oxidation of the following compounds:a. Fructose-6-phosphate b. 3-Phosphoglycerate
1. 0 answers
2. 937 views
Based �on� free� energies� of �hydrolysis�given� below,� for� each �of� the� following�reactions:�i)�Determine� the� overall�
1. 0 answers
2. 458 views
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p
1. 0 answers
2. 755 views
is Fe3O4 + 4H2 = 3Fe + 4H2O spontaneous at 298 K?Delta H system= 149.8 kj/mol Delta S system= 610.0 kj/mol
1. 1 answer
2. 1,584 views
Prove sinA/1+cosA =tan1/2A
1. 1 answer
2. 495 views
Find in terms of trigonometric function of xTan(90° + x)
1. 0 answers
2. 357 views
The ________the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex
1. 2 answers
2. 497 views
Prove 1-cosx+sinx / 1+cosx+sinx =tan x/2
1. 2 answers
2. 361 views
If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be
1. 0 answers
2. 608 views
how many mole of calcium sulfate are in a 100mL of .86M solution?
1. 1 answer
2. 370 views
What is the verb (linking or action) in "Long ago, farmers milked cows by hand"
1. 1 answer
2. 390 views
I am a 2 digit number. You can divide me by every single digit except for 5 and 7. Add my digits together and the sum is 9. What
1. 5 answers
2. 286 views
Vamos a... Form sentences using the following information. Use ir a + infinitive in each sentence to express what the subject is
1. 4 answers
2. 920 views
P=0.3e^0.08t find the rate of growth.
1. 1 answer
2. 328 views
IP A jogger runs with a speed of 3.10{\rm m/s} in a direction 25.0{^\circ} above the x axis. Find the x and y components of the
1. 1 answer
2. 1,027 views
Given that she previously belonged to high society and that later she had to move to a trailer park, she did not like to mix
1. 1 answer
2. 392 views
You found an unknown metal sample shaped as a cube with each side measuring 2.00 cm. The cube's mass is 48.0 . Your colleague
1. 2 answers
2. 670 views
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
1. 2 answers
2. 664 views
For the following reaction, the equilibrium constantKC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both
1. 1 answer
2. 537 views
For the following reaction, the equilibrium constantKC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both
1. 13 answers
2. 728 views
A saturated solution is prepared by dissolving 3.2 g of a salt in 9.10 g of water to yield a saturated solution. What is the
1. 2 answers
2. 1,105 views
1.00 g of sodium is added to a large excess of water under conditions of constant pressure (1.00 atm) and constant temperature
1. 4 answers
2. 617 views
Read the following passage by Picoult and identify the metaphor. Quote the metaphor in your response and explain what makes it
1. 3 answers
2. 773 views
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees
1. 1 answer
2. 602 views
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed,
1. 0 answers
2. 638 views
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
1. 1 answer
2. 1,238 views
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
1. 1 answer
2. 735 views
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
1. 1 answer
2. 1,101 views
There are 7 girls on a bus.Each girl is carrying 7 backpacks. In each backpack, there are 7 big cats. For each big cat, there is
1. 16 answers
2. 1,306 views
3(g-3)=6
1. 2 answers
2. 334 views
If a velocity that is 1 cm long represents a velocity of 12 km/h, what velocity does a vector 3 cm long drawn to the same scale
1. 1 answer
2. 469 views
Water is leaking out of an inverted conical tank at a rate of 1100 cubic centimeters per min at the same time that water is
1. 1 answer
2. 615 views
Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being
1. 2 answers
2. 1,231 views
<D is complentmary to <E and <D is supplementary to <G. If the measure <E is 78 find the measure of <D and <G
1. 3 answers
2. 861 views
Regular Pentagonside length(inches) - 6,8,10,12 Perimeter(inches) - ?,?,?,? fill in the ?
1. 1 answer
2. 429 views
Completed the following table for a pentagon.Regular Pentagon side length(inches) Perimeter(inches) 6 ? 8 ? 10 ? 12 ?
1. 1 answer
2. 531 views
Write the orbital diagrams for the following atoms/ions. Label the orbitals. You can use gas notation for Sr2+, Zn and Se2-.Sr2+
1. 1 answer
2. 1,018 views
If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)
1. 5 answers
2. 2,060 views
Consider the following double displacement reactions.For each reaction, complete and balance the equation and give the net ionic
1. 1 answer
2. 1,690 views
1. What is another name for freezing, the opposite of melting?2. What happens to the boiling point of water when you measure it
1. 0 answers
2. 606 views
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
1. 1 answer
2. 2,129 views
I'm doing chemical equilibrium, and there's a question in my lecture notes. Can someone check my answers and tell me if i'm
1. 4 answers
2. 834 views
Does "gaseous reactions" mean that all the products and reactants in a chemical equation are all in gaseous state?
1. 1 answer
2. 399 views
What is the percentage of land used by farmers compared to farming land avalible in Hawaii? Thanks!
1. 1 answer
2. 561 views
Describe the end behavior of the graph of the polynomial function by completing these statements: f(x)→? as x→-∞ and
1. 1 answer
2. 1,416 views
A man left his property to his wife, his son, his daughter, and his sister. His son and daughter got half of the property,
1. 2 answers
2. 665 views
“There are two extremes. . . which he who has given up the world ought to avoid. What are these two extremes? A life given to
1. 4 answers
2. 933 views
Hammurabi’s CodeHammurabi’s Code listed 282 laws dealing with a variety of subjects. A few examples of these laws are listed
1. 3 answers
2. 1,292 views
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
1. 0 answers
2. 571 views
Bradley, working in his 23 C kitchen, is cooking himself a crepe in an iron skillet that has a circular bottom with a diameter
1. 1 answer
2. 955 views
Lucy is going skin diving to see coral off the coast of Mexico in sea water with a density of 1025 kg/m^3.If she were to hold
1. 2 answers
2. 1,381 views
A water tower sits on top of a hill and supplies water to citizens below. The difference in pressure between the water tower and
1. 1 answer
2. 1,629 views
What calculations and ratios should a firm utilize to ensure it is competing at a high level? Why?
1. 0 answers
2. 435 views
Explain why the cost structure associated with many kinds of information goods and services might imply a market supplied by a
1. 0 answers
2. 624 views

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