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In a jar there are 4 red marbles 5 green marbles and 7 blue marbles.1 what us the probability of selecting a red marble
1. 4 answers
2. 2,682 views
if something is 80$ but it is on sale for $68 dollars what was the discount. show work.
1. 1 answer
2. 390 views
The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the
1. 1 answer
2. 3,045 views
you have apple, mapple, oak, poplar, and spruce trees. about how many different groups can u make with three different trees?
1. 1 answer
2. 465 views
two integers, x and y have a product of 20. what is the least possible sum of x and y?
1. 1 answer
2. 349 views
A ball is thrown into the air with an upword velocity of 36 ft/s. Its hight H in feet after t seconds is given by the function
1. 1 answer
2. 2,279 views
-10^2 =i know the answer is -100, but can someone explain how you actually find the answer?
1. 1 answer
2. 397 views
which of the following types of cells need to make energy to perform basic functions like growing, moving, and reproducing?-anim
1. 1 answer
2. 945 views
what cells can make energy from sugar molecules?-only plant and animal cells -only animal cells -plant, animal, bacteria, and
1. 2 answers
2. 765 views
Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that
1. 2 answers
2. 6,334 views
In addition to the regular trade discount of 25% and a volume purchase discount of 8.33333333% from the manufacturer, Appliance
1. 0 answers
2. 856 views
i need help setting up the equation. do i break up the problem into two parts? thanks in advance.A 3 kg block travels along a
1. 0 answers
2. 516 views
What is a fraction whose decimal value is between 0.4 and 0.64? List the fractions decimal equivalent as well.
1. 1 answer
2. 665 views
what are the following fractions decimal equivalents?-3 3/6 -3 3/8 -3 8/9 -3 2/3
1. 1 answer
2. 478 views
How does the opposite of n differ from the absolute value n?
1. 1 answer
2. 430 views
Could someone assist me in setting up this equation? Thanks!!A block of mass 2 kg attached to a spring lies on a flat surface.
1. 0 answers
2. 543 views
Name a molecule that transmits energy.Answer: Energy Molecule
1. 1 answer
2. 310 views
Question 5 of 10 Why are partial regression coefficients necessary in multiple regression? (Points : 1)Multiple variables each
1. 0 answers
2. 1,238 views
can someone please explain this to me i am confused and don't know what to doSuppose that the function g is defined , for all
1. 1 answer
2. 445 views
what land did the United States gain from the War of 1812?New Orleans
1. 1 answer
2. 724 views
My answers are in the bracketsNitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead
1. 0 answers
2. 589 views
*please help ily*. a fishing pole, 2m long, is pivoted at 50cm from one end. the other end has a line with a 4 kg fish on it.
1. 0 answers
2. 579 views
Stan the strongman lifts a 524 kg dumbbell from the floor to 1.69 meters above the floor at a constant velocity.How much energy
1. 1 answer
2. 498 views
A helicopter lifts a 63 kg astronaut 10 m vertically from the ocean by means of a cable. The acceleration of the astronaut is
1. 1 answer
2. 1,572 views
Light is shining perpendicularly on the surface of the earth with an intensity of 680 W/m2. Assuming that all the photons in the
1. 0 answers
2. 1,025 views
A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her
1. 0 answers
2. 611 views
A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her
1. 0 answers
2. 636 views
A flat screen is located 0.43 m away from a single slit. Light with a wavelength of 530 nm (in vacuum) shines through the slit
1. 0 answers
2. 810 views
At most, how many bright fringes can be formed on either side of the central bright fringe when light of wavelength 656 nm falls
1. 1 answer
2. 1,496 views
At the Statistics Canada Web site, you can find the percent of adults in each province or territory who have at least a
1. 1 answer
2. 626 views
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 59.82 diopters, and
1. 1 answer
2. 2,533 views
A score of 243 is a "basic" reading level.Scores for a random sample of 3000 students had a xbar = 250 with a standard error 1.0
1. 1 answer
2. 1,158 views
As a a test of a new measurement process, 10 measurements are made on pieces of glass known to have conductivity 1. The average
1. 2 answers
2. 632 views
a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is the value of b?
1. 1 answer
2. 337 views
Will taking antioxidants help prevent colon cancer?A medical experiment divided subjects into four gruops:daily beta-carotene,
1. 0 answers
2. 432 views
distint points a, b, c, d, e, and f are marked on a circle. How many triangles can be formed using these points as vertices?
1. 3 answers
2. 596 views
In one cycle, an engine burning a mixture of air and methanol (methyl alcohol) absorbs 525 J and expels 413 J.How much work is
1. 1 answer
2. 1,211 views
When one gallon of gasoline is burned in a car engine, 1.20 108 J of internal energy is released. Suppose that 0.99 108 J of
1. 0 answers
2. 1,088 views
100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is her expectation?
1. 1 answer
2. 619 views
When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy
1. 1 answer
2. 4,576 views
A 5.30-g lead bullet traveling at 390 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed
1. 1 answer
2. 982 views
Transpose the prescription-0.75DS/-3.25DCx30 to the toric form with a capstan-form surface which has a +2.50D base curve
1. 4 answers
2. 1,460 views
Transpose the prescription-0.75DS/-3.25DCx30 to the toric form with a capstan-form surface which has a +2.50D base curve
1. 1 answer
2. 485 views
I"m having a hard time setting up the problemGeorge can plant a garden in 2 hours, and it takes Joyce 3 hours. They work
1. 1 answer
2. 491 views
A total of 16 mice are sent down a maze, one by one. From previous experience, it isbelieved that the probability a mouse turns
1. 1 answer
2. 1,681 views
Liquid nitrogen, which has a boiling point of 77 K, is commonly used to cool substances to low temperatures.How much energy must
1. 4 answers
2. 3,160 views
What is the volume of2.8 × 10^6 molecules He? Answer in units of L
1. 2 answers
2. 430 views
You have 53 g of aluminum at25 degrees C.How much heat must be added to raise its temperature to 139 degrees C? Assume the
1. 4 answers
2. 689 views
A mass of 7 kg of water is raised from 8 degrees C to the boiling point 100 degrees C.How much heat is required? The specific
1. 0 answers
2. 1,050 views
A sample of oxygen at 25 degrees C occupies 697 mL.If this sample later occupies 1062 mL at 55 degrees C and 1.3 atm, what was
1. 2 answers
2. 614 views
What is the volume of2.8 × 106 molecules He? Answer in units of L
1. 2 answers
2. 468 views
How many grams of NH3 can be producedfrom the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ! 2NH3
1. 1 answer
2. 1,258 views
If the chemist mistakenly makes 275 mL ofsolution instead of the 200 mL, what molar concentration of sodium nitrate will the
1. 2 answers
2. 2,347 views
What volume of solvent should be added to36.8 g of CH3OH to produce a 0.500 M solution of CH3OH?
1. 1 answer
2. 2,319 views
How many grams of NH3 can be producedfrom the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ---> 2NH3
1. 3 answers
2. 1,558 views
Find the formula mass of the compoundH2SO4. 1. 98.09 amu 2. 96.07 amu 3. 97.08 amu 4. 81.08 amu 5. 89.09 amu
1. 6 answers
2. 862 views
How many moles are in 16.48 g Mg?Answer in units of mol
1. 1 answer
2. 325 views
What is the mass of 4.75 mol of the element iron (Fe)?Answer in units of g
1. 3 answers
2. 661 views
In the reversible reaction in water solutionNH3 + H2O <---> NH4+ + OH− , what acts as a Bronsted-Lowry acid and what acts as a
1. 2 answers
2. 2,715 views
Which part(s) of the reaction2O3(g) <---> 3O2(g) will be favored by an increase in the total pressure (resulting in
1. 1 answer
2. 1,160 views
For the reactionN2O4(g) ---> 2NO2(g) ,which of the following disturbances will cause an increase in NO2(g) concentration? 1. a
1. 2 answers
2. 2,499 views
What happens to the concentration of HI(g) when the total pressure on the equilibrium reaction2HCl(g) + I2(s) <--> 2HI(g) +
1. 7 answers
2. 1,279 views
What happens to the concentration of NO2(g)when the total pressure on the equilibrium reaction2 Pb(NO3)2(s) <--> 2 PbO(s) +
1. 3 answers
2. 877 views
For the systemH2(g) + CO2(g) <---> H2O(g) + CO(g) at equilibrium, the addition of H2(g) would cause (according to
1. 1 answer
2. 6,431 views
The position of equilibriumZ1) is never reached in an irreversible process. Z2) is always reached in a reversible process. Z3)
1. 2 answers
2. 709 views
An 73-kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 14 m and a period
1. 7 answers
2. 673 views
Consider the reaction at equilibrium:CaO(s) + CO2(g) ! CaCO3(s) If you add more CaO to the system, how will the system respond?
1. 3 answers
2. 620 views
Before a trip from New York to Boston, the pressure in an automobile tire is 2.5 atm at 272 K. At the end of the trip, the
1. 5 answers
2. 1,474 views
If a container holds 0.865 L of ethyl alcohol at 12.0 degree{C}}, what is the volume of the alcohol when its temperature is
1. 1 answer
2. 535 views
1.4 mol of gas at a temperature of -170 degreed celcius fills a 2.9 L container.what is the gas pressure?
1. 2 answers
2. 820 views
A typical photovoltaic cell delivers 3.8×10−3 {\rm W} of electric energy when illuminated with 0.14 {\rm W} of light energy.w
1. 2 answers
2. 779 views
a. How much power is generated by a motor that lifts a 300.0 kg crate vertically 8.0 meters in 6.0 seconds?b. If the crate is
1. 1 answer
2. 542 views
a. How much power is generated by a motor that lifts a 300.0 kg crate vertically 8.0 meters in 6.0 seconds?b. If the crate is
1. 0 answers
2. 500 views
Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting
1. 1 answer
2. 628 views
five resistors of 30 ohms each are connected in parallel across a 120 volt line. the combined resistance of the five resistors
1. 1 answer
2. 1,724 views
Create a quadratic equation with the solutions x=-2 and x=6would x=-2 = x=0 would x=6 = x = 0?
1. 1 answer
2. 535 views
Concentrated nitric acid is 16M. What volume of nitric acid must be diluted must with distilled water to prepare 5L of 0.1M
1. 1 answer
2. 773 views
What is the molar concentration of calcium hydroxide that has 0.185g solute in 100ml solution?
1. 1 answer
2. 561 views
Concentrated HCI is 12M. What is the molarity of an HCI solution prepared by diluting 10ml concentrated HCI to a total volume of
1. 1 answer
2. 631 views
Concentrated HCI is 12M. What is the moloarity of an HCI solution prepared by diluting 10ml concentrated HCI
1. 1 answer
2. 527 views
Write a mulplication problem.It's a square where 50 little squares are shaded, 20 are not shaded and 30 are double shaded
1. 1 answer
2. 516 views
9z=8
1. 1 answer
2. 254 views
3/8+y=-3/16
1. 2 answers
2. 383 views
A 11.0 g bullet is fired horizontally into a 108 g wooden block that is initially at rest on a frictionless horizontal surface
1. 0 answers
2. 746 views
A rifle with a mass of 2.0kg is used to fire a bullet with a mass of 50.g. The bullet leaves the gun with a speed of 200. m/s.
1. 2 answers
2. 1,945 views
I have a algebra question not to good at this? here goes..the fuction w (d)=0.112d approximates the amount in centimetres of
1. 4 answers
2. 484 views
calculate the range, variance, standard deviation,and interquartile range for the data set given {72, 80, 80, 82, 88, 90, 96}
1. 1 answer
2. 1,055 views
Doug had scores of 80, 85, 75, and 80 on his first fourexams in a course. a. Find the mean, median, and mode for these exam
1. 2 answers
2. 658 views
what did Descartes mean when he said, "I think,therefore I am"
1. 3 answers
2. 325 views
(-2)/(x-1)=(x-8)/(x+6)is 7/8 the answer for this question
1. 1 answer
2. 261 views
(-2)/(x-1)=(x-8)/(x+6)please help me with this
1. 3 answers
2. 275 views
What is a t1 internet connection and fast is it?
1. 1 answer
2. 992 views
if i were writing a newspaper article and the title was "a civil family affair" and the article was about the irish war in which
1. 0 answers
2. 1,091 views
in Act I, Scene iii, line 19 the witches say "I'll drain him dry as hay" I have to explaion this quotation but i don't quite
1. 0 answers
2. 3,998 views