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The cesium-131 nuclide has a half life of 30 years. After 90 years, about 6g remain. What is the original mass of the cesium-131
1. 1 answer
2. 2,162 views
Technetium-99 has been used as a radio graphic agent in bone scans. If the isotope has a half life of 6.0 hours, what amount is
1. 1 answer
2. 425 views
If the half life of Pu-239 is 2.4 x 10^4 years, how many years are required for a 20-gram sample of plutonium-239 to be reduced
1. 1 answer
2. 517 views
A particular radioactive element has a half life of 10.0 days. How much is left after 30.0 days if the sample started with 345g?
1. 1 answer
2. 499 views
A particular radioactive element has a half life of 10.0 days. How much is left after 30.0 days if the sample started with 345g?
1. 1 answer
2. 946 views
Why did Thomas Paine write the pamphlet, common sense?
1. 15 answers
2. 2,606 views
Compare the tactics used by the french troops in the French and Indian War with those of the American patriots during the
1. 13 answers
2. 2,560 views
which of the following was a belief of the quakers that set them apart from ither religious groups that settled in the american
1. 5 answers
2. 1,394 views
which of the following was a belief of the quakers that set them apart from ither religious groups that settled in the american
1. 8 answers
2. 1,637 views
If an object is propelled upward fom a height of s feet at an initial velocity of v feet per second, then its height h after
1. 1 answer
2. 1,008 views
1. The Middle Ages began with the collapse of thea. Renaissance b. Roman Empire c. Kingdom of Mali. d. Tang Dynasty 2. In the
1. 23 answers
2. 1,418 views
Eight players P1, P2,. ..... P8 play a knock-out tournament. It is known that whenever the players Pi and Pj play; the player Pi
1. 1 answer
2. 512 views
Which of the following options results in a graph that shows exponential growth?a) f(x) = 0.4 (0.2) ^x b) f(x) = 4(0.98)^x c)
1. 1 answer
2. 741 views
A garden shed is 6m long and 4m wide. A path 1.5 m wide and 10 cm deep is going to be made around the shed. What is the volume
1. 1 answer
2. 539 views
What is the participial phrase in the sentence? Living in New York, he went to many fantastic Broadway plays.A. Living in New
1. 8 answers
2. 3,100 views
Disussing the future of management, Manager A maintains that we can expect a continued rise of virtual management and growth in
1. 3 answers
2. 689 views
A 0.2 kg ball moves to the right with a speed of 3 m/s. It hits a 0.5 kg ball that at rest. After collision, the second ball
1. 2 answers
2. 1,083 views
A 0.02 kg ball moving to the right at 0.25 m/s makes an elastic head-on collision with a 0.04 kg ball moving to the left at 0.15
1. 6 answers
2. 8,204 views
Carl hits a 0.05 kg golf ball giving it a speed of 65 m/s. What impulse does he impact to the ball?
1. 1 answer
2. 993 views
A football is kicked at an angle of 40 degrees with an initial speed of 7 m/s. What is the horizontal distance traveled by the
1. 2 answers
2. 4,378 views
A volleyball is served at an angle of 35 degrees with an initial speed of 5 m/s. What is the maximum height reached by the ball?
1. 3 answers
2. 5,762 views
A frisbee is thrown horizontally with a speed of 12 m/s. If the frisbee moves a horizontal distance of 15 m, how long will it
1. 3 answers
2. 1,298 views
What is one way Saudi Arabia and Iraq would not have to depend on oil?
1. 1 answer
2. 513 views
Bud and frank were playing a game together and together they scored 56 points. Buds score was 8 times higher than franks what
1. 1 answer
2. 477 views
In ammonia, 14g of nitrogen combines completely with 3g of hydrogen. How many grams of hydrogen are needed to combined
1. 1 answer
2. 897 views
Hector’s service club is raising money by wrapping presents in the mall. The function f(x) = 3x describes the amount of money,
1. 0 answers
2. 1,106 views
5/2 = 46/346/3 x 2/5 = 92/15
1. 1 answer
2. 310 views
Veronica's cell phone plan costs $35 dollars per month plus $0.05 per minute used. Veronica's bill last month was $40.75. How
1. 2 answers
2. 763 views
Name a molecule that transmits energy.Answer: Energy Molecule
1. 1 answer
2. 336 views
Put the following in the correct order.Report results Determine if hypothesis is true Do background research Construct a
1. 2 answers
2. 678 views
Put the following in the correct order.Report results Determine if hypothesis is true Do background research Construct a
1. 2 answers
2. 888 views
The function of a protein is determined by its ?Answer: shape The shape of a protein is determined by the ? of its ? ? First
1. 2 answers
2. 516 views
What is a reactant that binds to a catalyst?Answer: a catalyst An enzyme is a kind of ? Answer: a substrate
1. 3 answers
2. 656 views
What is a reactant that binds to a catalyst?Answer: a catalyst An enzyme is a kind of what? Answer: a substrate
1. 0 answers
2. 455 views
For the set of ordered pairs, state the domain, range, and determine whether or not the relation represents a function.(9,9),
1. 1 answer
2. 666 views
3x-y=-23x-y=4 Please help me solve
1. 2 answers
2. 316 views
Solve by elimination5x+y=2 3x+y=1 This is what I got : 3(5x+y=2) -5(3x+y=1) 15x+3y=6 -15x-5y=-5 -2y=1 2 2 Y=1/2 15x+3(1/2)=6
1. 1 answer
2. 543 views
Please help me solve by elimination. 5x=20+y 16=3y+4x
1. 1 answer
2. 468 views
Solve by substitution:x-y=3 x+3y=6 This is what I get: X+3y=6 Y=x-3 X(x-3)=6 2x= 9 2 2 X= 9/2 9/2+3y=6 9/2-9/2+3y= 6-9/2 3y/3=
1. 2 answers
2. 290 views
How do you solve this by substitution?x=6y+2 3x-18y=4 This is the answer I get: 3(6y+2)-18y=4 18y+6-18y=4 18y+1818y+6-18y+18y=4
1. 1 answer
2. 627 views
Michael will be running 15 mile road race this weekend. How many feet will he run?
1. 3 answers
2. 845 views
A small business invests 33,000 in equipment to produce a product. Each unit of the product costs $1.70 to produce and is sold
1. 2 answers
2. 541 views
a block of graphite has a mass of 4.4x10 2 kg, a volume of 0.2 m3, a weight of 4.3x10 3 n, and exerts a pressure on the table of
1. 1 answer
2. 386 views
Ca + Cr2O7{-2} = Ca{2+} + Cr{+3}Blance the redox please someone help me I got exam tomorrow and I got to go sleep soon
1. 3 answers
2. 1,524 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. 0 answers
2. 514 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. 0 answers
2. 555 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. 0 answers
2. 482 views
People who eat losts of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods.Fruits
1. 0 answers
2. 481 views
Marathon runners were randomly assigned to receive either vitamin C or a placebo.Separately, these treatments were also randomly
1. 2 answers
2. 488 views
Marathon runners were randomly assigned to receive either vitamin C or a placebo.Separately, these treatments were also randomly
1. 1 answer
2. 451 views
I am trying to study for my chem test but I don't get how to answe this questionA researcher explores the ideal gas equation. He
1. 1 answer
2. 424 views
the log(10^ -1)of 3.66 =of 9.86 = of -2.8 = please help. (the 10^-1 is the subscript to log)
1. 0 answers
2. 420 views
A spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool
1. 0 answers
2. 431 views
Lever Brothers has a debt ratio (debt to assets) of 40%. Management is wondering if its current capital structure is too
1. 0 answers
2. 539 views
When solving for EBIT, What kind of algebra do I use?I replaced EBIT with x. The equation is:
1. 0 answers
2. 375 views
Solve for x and yy=1/3x - 1 x-y=-1
1. 1 answer
2. 307 views
Solve for x and yy=1/3x - 1 x-y=-1
1. 1 answer
2. 337 views
Find the probability for onevroll of a number cube. Reduce.P (3)
1. 0 answers
2. 293 views
Find the probability for onevroll of a number cube. Reduce.P (3)
1. 1 answer
2. 298 views
(1/3)*(2/5) both are to the third power outside both (
1. 1 answer
2. 314 views
Solve the equation by the substition method. x-y=11 3x+10y=-6?
1. 1 answer
2. 781 views
Solve the equation by the substition method. x-y=11 3x+10y=-6?
1. 0 answers
2. 435 views
Jade counted the number of the students on each sports time at her school and the number of wins the team had last season. If
1. 0 answers
2. 504 views
A doctor asked 200 people over the age of 50 whether they suffered from depression or heart disease. The results were 16
1. 1 answer
2. 519 views
Solve two solutions. If there is a solution write it or I there isn't any write no solution.-3ly-3l = 9 (l l is absolute value
1. 1 answer
2. 487 views
How did the British mercantlism prevent the economic development of the colonies?A.) The colonies were process to export their
1. 1 answer
2. 1,429 views
The perimeter of a pool table is 30 ft. The table is twice as long as it is wide. What is the length of the pool table?
1. 4 answers
2. 916 views
A set of dominoes has 28 dominos. There are 7 dominos called doubles with the same number of dots on each end. If Sara and Jake
1. 1 answer
2. 432 views
In Janis class, half of the students are girls and 60% of the students have brown eyes. If a student is chosen at random, what
1. 1 answer
2. 542 views
Can noninteger numbers be part of the domain and range? Explain.
1. 1 answer
2. 610 views
If a and b are any real numbers such that 0<a<1<b, which of the following must be true ov the value ab??
1. 1 answer
2. 296 views
The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid
1. 1 answer
2. 946 views
If a and b are any real numbers such that 0<a<1<b, which of the following must be true ov the value ab??
1. 1 answer
2. 373 views
The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid
1. 0 answers
2. 497 views
Write a function rule to describe each situationThe sellings price s(c) after a 45% markup of an item as a functiom of the
1. 1 answer
2. 552 views
Write a function rule to describe each situationThe sellings price s(c) after a 45% markup of an item as a functiom of the
1. 1 answer
2. 451 views
Is the time it takes to run a 100-meter race a function of the speed you run?
1. 1 answer
2. 647 views
Paul males 33 of 40 free throws. He wantes to use this ratio to predict n, the number of free throws he will make out of 198
1. 1 answer
2. 412 views
A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 h later
1. 6 answers
2. 945 views
A set of data has a mean of 25 and an outlier of 5. You find the mean without the outlier. Which of the following best describes
1. 2 answers
2. 1,233 views
Write an integer to represent a debt of $35
1. 5 answers
2. 1,786 views
Solve with as in inquailty.Jim has $87. He spends $6 for socks and at least $32 for shoes. How much does he have letf to spend
1. 2 answers
2. 420 views
Write an inequailty for the sentence and solve it.1. The sum of a number w and 3 is less than or equal to ten
1. 3 answers
2. 920 views
You are savi g to buy a bicycle that will cost at least $120. Your parents five you $45 toward the bicycle. How much money will
1. 3 answers
2. 494 views
2 + m < 2 is m < 0 but how would I check it?
1. 2 answers
2. 325 views
Can you explain how to do this?18 < 20 + w
1. 1 answer
2. 318 views
30 > t + 45is it t < -15?
1. 1 answer
2. 290 views
28/100 = x/360x=
1. 2 answers
2. 360 views
Find the measure if the central angle that you would to represent each percent in a circle graph. Round to the nearest degree.50
1. 1 answer
2. 470 views
How are oxygen and ozones alike? How are xyggen and ozone different?
1. 0 answers
2. 370 views
If the corressponding angles of 2 polygons are congruent and the lengths of the corresponding sides of the polygons are
1. 1 answer
2. 2,178 views
Are (1/2 x 3) x 8 and 3 x (1/2 x 8) equal?Explain how this can help in finding the area of a triangle
1. 1 answer
2. 307 views
Please rank the following compounds in DECREASING order of their reactivity toward the SN2 reaction with sodium ethoxide in
1. 1 answer
2. 1,134 views
Ooops sorry!Please rank the following compounds in DECREASING order of their reactivity toward the SN2 reaction with sodium
1. 2 answers
2. 1,449 views
A coil has a horizontal axis. Its current goes North on top. What is the direction of the magnetic field inside this coil?
1. 1 answer
2. 433 views
We have to find the first and second derivative of f(x)=x^(2/3)(6-x)^(1/3)I have the first derivative as being
1. 3 answers
2. 980 views
The equation C=mx+b can be used to model the monthly cost, C, of a cell phone plan where b is the flat monthly cost, m
1. 2 answers
2. 703 views
Here is the problem:A two-digit number is eight times the sum of its digits.When the number is added to the number obtained by
1. 2 answers
2. 1,144 views
I need help on doing a math problem formy algebra class so if u could help i would be really grateful any way please explain. :
1. 4 answers
2. 432 views
A 27.6ml volume of chlorine gas is collected over water at 23 C and 750 torr. The mass of the gas is 78.4mg. The vapor pressure
1. 4 answers
2. 754 views

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