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Riley
Questions and answers by visitors named
Riley
Questions (237)
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
5 answers
6,802 views
On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.
4 answers
3,465 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
3 answers
2,694 views
A ramp has a slope of 0.25. If the rise is 4 feet, what is the horizontal distance covered by the ramp?
3 answers
1,008 views
Is a tree a living organism?
Yes, a tree is a living organism.
1 answer
348 views
If I have info. that fits into distinct catergories and want to compare totals what kind of graph should I use? A bar graph?
3 answers
373 views
What does "almost everything in this isle enjoys immunity to poison" - Bede mean? Does it have something to do with Ireland?
3 answers
403 views
Would Canterbury be considered in the Southeast part of England?
1 answer
335 views
Was Chaucer the first author to use a frame story?
1 answer
419 views
Two charges (+4C and -3C)are separated by .00002m. What is the electrostatic force and its direction?
Using Coulomb's law, I
3 answers
890 views
Two charges 10uC (point A) and -10uC (point B) are placed 10cm from each other. Find the electric field at a point P
4 answers
1,577 views
Is the solvation of borax in water an exothermic or endothermic process?
i am thinking the it is endothermic...is that right?
3 answers
2,960 views
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
2 answers
862 views
? g of glucose C6H12O6 must be dissolved in 400 g of water to give a solution that is 0.258 m.
1 answer
456 views
When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0320C .
1 answer
776 views
When CO2(g) (0.118 mol/L) and H2(g) (3.90 mol) in a 33.0 L reaction vessel at 980K are allowed to come to equilibrium the
2 answers
545 views
A machine fills 64 ounce detergent jugs. It is known that the net amount of detergent poured into each jug has a normal
3 answers
1,125 views
I have to solve the system.
3x + y = 12 y = 9 - 3x I used the substitution method to get 3x + 9 - 3x = 12 But now I'm stuck.
4 answers
1,275 views
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:
3 answers
999 views
Find all points on the curve x^2y^2+xy=2 where the slope of tangent line is -1.
This is what I got. x^2y^2+xy=2 x^2*2ydy/dx +
5 answers
1,345 views
A person is standing 50meters away from a target whos center is 90cm off the ground. The height to the person's eyes is
3 answers
447 views
(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
3 answers
737 views
Find the cubic function f(x)=ax^3+bx^2+cx+d that has a local max value of 3 at -2 and a local min values of 0 at 1.
I have no
7 answers
1,951 views
Why does a narrow strip of paper, attatched to a vent that is blowing air at a steady rate, wave and flap? I havn't taken
1 answer
374 views
I am suposed to apply L'Hospitals rule to solve. I can't seem to solve it tho. could someone explain the steps to me? Thanks!
the
4 answers
595 views
I am suposed to incorporate the answer to this question into a short repot on raphael.
What makes a Raphael a Raphael? I can't
3 answers
1,045 views
V(h) = pie/3(R^2h-h^3)
take the derivative with respect to h. using the chain rule I got: V'(h) = pie/3(2Rh+R^2-3h^2) but this is
4 answers
427 views
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
4 answers
1,978 views
I need help with this problem. this is what I got so far:
P(x)=12x-(x^2/500)-680-4x-0.01x^2 P'(x)=12-0.004x-4-0.02x P'(x)=
1 answer
442 views
I am reposting this because I still don't understand it.
I need help with this problem. this is what I got so far:
3 answers
473 views
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
1 answer
1,135 views
Show by algebraic reasoning that your gravitational acceleratoin toward an object of mass M a distance d away is a = GM/d
2 answers
806 views
What does it mean to say that angular momentum is conserved? Give an example you might see on Earth. How could conservaton of
1 answer
378 views
you take out a $250,000, 30-year loan with monthly payments at a 6.5% interest rate. 4 years later, you refinance the remaaining
1 answer
372 views
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
4 answers
521 views
I am having trouble writing this program for java. can anybody help
write a program that prints the letter X composed of
1 answer
499 views
Having trouble with this program running, can anybody help solve my problem:
#include <stdio.h> #include <stdlib.h> #include
1 answer
475 views
why did the colonists need their independence?
1 answer
257 views
Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to
7 answers
1,185 views
3.5 liters of H2O are added to 500 mL of a 2.0 M HNO3 solution. What is the resulting molarity?
1 answer
329 views
In the hope of high returns, venture capitalists provide funds to finance new (start up) companies. However, potential
1 answer
595 views
In the hope of high returns, venture capitalists provide funds to finance new (start up) companies. However, potential
3 answers
795 views
Explain why the cost structure associated with many kinds of information goods and services might imply a market supplied by a
2 answers
524 views
What calculations and ratios should a firm utilize to ensure it is competing at a high level? Why?
1 answer
359 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
4 answers
1,522 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
4 answers
1,301 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
3 answers
874 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 answer
479 views
Hammurabi’s Code
Hammurabi’s Code listed 282 laws dealing with a variety of subjects. A few examples of these laws are listed
4 answers
1,179 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
5 answers
842 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,
3 answers
533 views
Describe the end behavior of the graph of the polynomial function by completing these statements: f(x)→? as x→-∞ and
3 answers
1,311 views
What is the percentage of land used by farmers compared to farming land avalible in Hawaii? Thanks!
2 answers
509 views
Does "gaseous reactions" mean that all the products and reactants in a chemical equation are all in gaseous state?
1 answer
340 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
5 answers
715 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
3 answers
1,995 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 answer
536 views
Consider the following double displacement reactions.
For each reaction, complete and balance the equation and give the net ionic
3 answers
1,565 views
If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)
6 answers
1,941 views
Write the orbital diagrams for the following atoms/ions. Label the orbitals. You can use gas notation for Sr2+, Zn and Se2-.
Sr2+
2 answers
929 views
Completed the following table for a pentagon.
Regular Pentagon side length(inches) Perimeter(inches) 6 ? 8 ? 10 ? 12 ?
1 answer
417 views
Regular Pentagon
side length(inches) - 6,8,10,12 Perimeter(inches) - ?,?,?,? fill in the ?
1 answer
349 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
4 answers
790 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
3 answers
1,124 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
2 answers
505 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 answer
387 views
3(g-3)=6
3 answers
265 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
16 answers
1,152 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
3 answers
1,004 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
2 answers
646 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
3 answers
1,109 views
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed,
2 answers
546 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
2 answers
537 views
Read the following passage by Picoult and identify the metaphor. Quote the metaphor in your response and explain what makes it
4 answers
648 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
5 answers
516 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
3 answers
983 views
For the following reaction, the equilibrium constant
KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both
13 answers
620 views
For the following reaction, the equilibrium constant
KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both
1 answer
464 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
3 answers
576 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
3 answers
572 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 answer
331 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
3 answers
907 views
P=0.3e^0.08t find the rate of growth.
1 answer
278 views
Vamos a... Form sentences using the following information. Use ir a + infinitive in each sentence to express what the subject is
5 answers
819 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
6 answers
216 views
What is the verb (linking or action) in "Long ago, farmers milked cows by hand"
1 answer
326 views
how many mole of calcium sulfate are in a 100mL of .86M solution?
1 answer
306 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 answer
515 views
Prove 1-cosx+sinx / 1+cosx+sinx =tan x/2
3 answers
311 views
The ________the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex
3 answers
421 views
Find in terms of trigonometric function of x
Tan(90° + x)
1 answer
303 views
Prove sinA/1+cosA =tan1/2A
1 answer
422 views
is Fe3O4 + 4H2 = 3Fe + 4H2O spontaneous at 298 K?
Delta H system= 149.8 kj/mol Delta S system= 610.0 kj/mol
3 answers
1,466 views
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p
1 answer
654 views
Based �on� free� energies� of �hydrolysis�given� below,� for� each �of� the� following�reactions:�
i)�Determine� the� overall�
1 answer
384 views
Calculate the ATPs resulting from the total oxidation of the following compounds:
a. Fructose-6-phosphate b. 3-Phosphoglycerate
1 answer
865 views
1/8(2sin2x-sin4x)= cosxsin^3x prove
1 answer
410 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 answer
670 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 answer
409 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
4 answers
667 views
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