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Questions (201)

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. 465 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. 2 answers
2. 476 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. 394 views
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. 3 answers
2. 2,106 views
The iodine-131 nuclide has a half-life of 8 days. If you originally have 625-g sample, how many grams will you have after 2
1. 3 answers
2. 991 views
X^2x-2x-2=0
1. 1 answer
2. 242 views
x^2-4x-1=0
1. 1 answer
2. 269 views
Define the law of the conservation of mass. Using this definition: if you have the reaction of 40 g of water decomposing into
1. 1 answer
2. 440 views
A divided by B = 12 … 4, if A and B reduce 10 times at the same time, find the value of new quotient and remainder of the
1. 3 answers
2. 432 views
An airplane is flying above the Earth's surface at a height of 9.30 km. The centripetal acceleration of the plane is 18.2 m/s2.
1. 2 answers
2. 509 views
Around a circle i place 64 equally spaced points, so that there are 64x63 divided by2=2016 possible chords between these points.
1. 3 answers
2. 1,283 views
Can you please assist with this question:At a school production, adult tickets cost $7.00 each and student tickets costs $4. The
1. 4 answers
2. 669 views
What is the length of segment BF in triangle ABC when segment DF is equal to 30 and segment BD is equal to 9?
1. 2 answers
2. 2,327 views
Which of the following are true of Barcelona? (more than one answer)Catalán is spoken there.*** It is one of the major ports of
1. 4 answers
2. 979 views
Randy travels north on a road 1029 miles long and Marco is travelling south on the same road. Randy-45m/hr marco- 53m/hr. How
1. 1 answer
2. 458 views
In 1994 Tony Abbott received 54% of votes in his seat for Warringah. If the electorate had 78496 how many people voted for Tony
1. 4 answers
2. 394 views
What is a reason that market prices are not always the same as equilibrium prices?A) Market prices are often set by buyers
1. 5 answers
2. asked by Please help
3. 3,332 views
civil DisobediencePart 2: Thoreau’s ideas had a profound effect on a man named Gandhi. Gandhi, was a leader in India who
1. 5 answers
2. 1,776 views
Thoreau’s ideas had a profound effect on a man named Gandhi. Gandhi, was a leader in India who worked to end British rule. He
1. 7 answers
2. 1,416 views
When I am transforming square root of X in to Y= -3 (square root of x+9) -3Do i turn the x in to negatives because its a
1. 1 answer
2. 294 views
I'm so confused on distance formula, I know how to calculate it, but getting the final simplified answer is so confusing. Like
1. 2 answers
2. 470 views
I'm so confused on distance formula, I know how to calculate it, but getting the final simplified answer is so confusing. Like
1. 1 answer
2. 460 views
Sally is evaluating some test papers. There are 80 multiple choice questions in the test. Students get two points for every
1. 9 answers
2. 2,640 views
Fast Rental Services and Red Rent Services provide rental cars. Fast Rental Services charges a flat fee of $4.50, plus $0.75 for
1. 2 answers
2. 785 views
7 .Which of the following is an important detail in the selection1 The Park Road leads to Gila National Forest. 2 When sand and
1. 6 answers
2. 594 views
15. Write a function rule that represents y is 5 less than the product of 4 and x.16. Write a function rule that represents 7
1. 6 answers
2. 3,128 views
1. What is the shape of the bases for the following polyhedron?A. Triangle B. Square C.rectangle D. Circle 2. What is the best
1. 69 answers
2. asked by Please help
3. 31,271 views
I don’t know how to do this because I was sick when this was thought. If someone could please explain how to do or set up the
1. 2 answers
2. 516 views
If you scratch a penny with an steel file, will the copper of the penny rub off on the file, or the steel (iron) of the file rub
1. 4 answers
2. 2,163 views
What does it mean when a number is in brackets like these? | |example|-10|
1. 4 answers
2. 333 views
Which of the following lists structures from smallest to largest?A. Chromosome, supercoil, coil, nucleosome, double helix B.
1. 7 answers
2. 5,189 views
How the DNA structure forms the genetic code, and how that genetic code comes to be expressed as a phenotype.
1. 3 answers
2. 533 views
Solve the equationY/4 +2= 3y+7/5
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2. 361 views
How are the Texas constitution and US Constitution similar?
1. 4 answers
2. 836 views
I need help thinking of 4 small problems in our world. I have to have 4 problems, solutions attempted to those problems and a
1. 4 answers
2. 583 views
Jason has already used 3 1/1 cans of paint painting furniture. He is painting chairs that use 8 1/1 cans of paint.Let the total
1. 4 answers
2. 1,717 views
What is a big problem in our world?Think of a problem solving invention to solve this problem.
1. 1 answer
2. 484 views
I have to use the discriminate to determine the number of answers for the following equation, but my textbook never showed me
1. 7 answers
2. 471 views
Compare and contrast the fight for civil rights for Mexican Americans and African Americans? (4 points)
1. 7 answers
2. 2,726 views
Can someone tell me if this fits the questionMexican Americans were allowed to vote, unlike African Americans who didn't have
1. 4 answers
2. 1,119 views
The walrus and the carpenterThe sun was shining on the sea Shining with all his might He did his very best to make the billows
1. 7 answers
2. 1,390 views
Kerry’scomputerkeyboardis18incheslongand6 inches wide. Tim’s keyboard has the same lengthto-width ratio as Kerry’s.
1. 3 answers
2. 605 views
Zach said he would help Stuart clean his room if Stuart ﬂips a coin 4 times and gets heads all 4 times. What is the
1. 9 answers
2. 1,009 views
A group of friends went to lunch. The bill, before sales tax and tip, was $37.50. A sales tax of 8% was added. The group then
1. 3 answers
2. 754 views
How have developments in the Texas healthcare industry contribute to the urbanization of Texas?A- Early agricultural innovations
1. 7 answers
2. 1,788 views
Maya has 120 caramel apples to sell. Each caramel apple is covered with one topping.1/5 of the caramel apples are covered with
1. 18 answers
2. 11,942 views
A ﬁsh is swimming at a constant rate toward the ocean ﬂoor. The equation y = −7x − 3 can be used to represent this
1. 7 answers
2. 2,636 views
PLease help I am struggelingYou roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability
1. 7 answers
2. 673 views
For questions 1-3, simplify the polynomial.1. 14x^2 + 4 + 3x - 12x^2 - 3 + 11x 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 3. 2x^2 + 6x -
1. 5 answers
2. 3,574 views
John is thinking about buying a house for $179,000. The table below shows the projected value of two different houses for three
1. 4 answers
2. 2,302 views
Portfolio InstructionsFor your portfolio item, you will conduct research into the Progressive Era topic you selected, search for
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2. 3,142 views
is -7+9= -9+7 true false or opena.true b.false c.open please help i think the answer is false
1. 1 answer
2. 374 views
The mining of which resource produces the most toxic waste?Tin Silica Copper** Quartz I think it’s C can someone please double
1. 7 answers
2. 5,171 views
Calculate the amount of heat required to con- vert 71 g of water at 51.3◦C to steam at 126.1◦C.Answer in units of kJ. I got
1. 1 answer
2. 385 views
A 726 mL gas sample at STP is compressed to a volume of 117 mL, and the temperature is increased to 23◦C. What is the new
1. 2 answers
2. 641 views
Okay so I can't find this anywhere in my textbook.Chinese settlement was restricted to the west by which natural barrier? A. the
1. 2 answers
2. 743 views
Evaluate x divided by 80 for x=8/9
1. 16 answers
2. 2,484 views
Jordan has 4/5 as many DVDs as Joseph. If Jordan has 56 DVDs, then how many does Joseph have?
1. 3 answers
2. 684 views
Falcons belong to the raptor family. They are the fastest flyers of all the raptors. These birds of prey eat small animals and
1. 3 answers
2. 422 views
Lesson 12: Polygons and Quadrilaterals Unit Test CE 2015Geometry A Unit 7: Polygons and Quadrilaterals I need help First
1. 1 answer
2. 293 views
Please help, I dont understand any of this, this question is on a math website we usin in school, this lesson is late i dont
1. 1 answer
2. 397 views
Teddy: Both Leon and Peter liedLeon: One of them(Teddy or Peter) was truthful Peter: One of them(Teddy or Leon) was lying
1. 4 answers
2. 626 views
The dimensions of a pyramid are increased by 1100%. The percentage increase in surface area isThe new dimensions are ___times
1. 5 answers
2. 1,610 views
Give me the asnwer please Im beggingWhich sentence is punctuated correctly? A. Before Nate did his homework, he took the dog out
1. 2 answers
2. 577 views
Sara is selling tickets to a highschool festival. She sold 10 less senior tickets than junior tickets and she sold 3times as
1. 6 answers
2. 384 views
Read each of the descriptions that refers to Neanderthals, Homo sapiens, or both. Drag each description to the correct box.Descr
1. 3 answers
2. 546 views
Find the distance d. Assume that the ratio of d to 150 ft is the same as the ratio of 40ft to 50ft
1. 2 answers
2. 245 views
Find the distance d. Assume that the ratio of d to 150ft is the same as the ratio of 40ft to 50ft
1. 3 answers
2. 321 views
What is the slope of the graph of -5x+8y=30. a.5/8 b.6 c.-5/8 d.15/4
1. 4 answers
2. 304 views
Which of the following is true about typical Puerto Rican schools?A. Most schools use ceiling fans in the classes and hallways.
1. 2 answers
2. 655 views
10. Mary's travel time and speed vary INVERSELY. Mary drives home from work in 40 minutes driving 55 mph. If Mary needs to get
1. 3 answers
2. 384 views
If y varies directly as x and y is -48 when x is -8, find y when x is 7.
1. 1 answer
2. 355 views
The number of floors in a building varies inversely as the distance between the floors. The building has 32 floors that are 12
1. 1 answer
2. 351 views
find the area of a parallelogram with the base and height. bass is 70 4cm height is 14. 8 cmA. 88.8 cm ^2 B.177.6 ^2 C. 1095^?2
1. 1 answer
2. 285 views
Signals that tell your mind and body how to reactA) emotions B) stressor C) personality D) defense mechanism
1. 3 answers
2. 290 views
Which of the following sparked the beginning of the Spanish-American War?A. The Cuba Libre movement*** B. The sinking of the
1. 6 answers
2. 5,846 views
In an introduction you need to have a hook. A hook is something that really pulls the readers attention and make them want to
1. 1 answer
2. 240 views
Is the relationship shown by the data linear? If it is, model the data with an equation.X Y -10 -3 -4 0 -1 2 3 4 A: The
1. 1 answer
2. 278 views
Which sentence uses the conditional form of the verb send?* A. I am sending a letter to our grandparents. B. I could send a
1. 2 answers
2. 143 views
Which of the following are both best classified as heterogeneous mixtures?A. water and air B. salad and dirt C. dirt and air D.
1. 3 answers
2. 59 views
What is the solution of the equation 2/x+4=1/5
1. 2 answers
2. 25 views
How did western technology aid in the conquest and control of Asian and African peoples? Short answer.Time sensitive, be quick
1. 1 answer
2. 12 views
What role did the National Assembly play in the conflicts that developed in France after 1789
1. 1 answer
2. 31 views
What role did the National Assembly play in the conflicts that developed in France after 1789SHORT answer
1. 1 answer
2. 23 views
Compare and contrast the effects that the first and second industrial revolutions had on society in the United StatesShort
1. 1 answer
2. 16 views
Compare and contrast the effects that the first and second industrial revolutions had on society in the United StatesSHORT
1. 1 answer
2. 14 views
Compare and contrast the effects that the first and second industrial revolutions had on society in the United StatesTwo
1. 1 answer
2. 18 views
Which of the following occurred as a result of the Mexican-American war?A-Mexico gained more land B-Mexico was completely
1. 1 answer
2. 12 views
Building nations quiz answers?
1. 1 answer
2. 8 views
Which of the following is likely a reason that someone today might decide to move from a city in the mid west to the southA-the
1. 1 answer
2. 7 views
The United States and Canada unit test INCCPlease help
1. 1 answer
2. 11 views
What generalization can be made by comparing the lifestyle of the Inuit of the Arctic to the lifestyle of the Natchez in the
1. 1 answer
2. 13 views
Why has the Colorado River become an environmental issue?(1 point) • Frequent flooding threatens endangered habitats in the
1. 1 answer
2. 11 views
Use the drop-down menu to complete the sentence. (1 point)During the 1800s, the main reason Americans wanted to expand
1. 1 answer
2. 7 views
Which of the following best describes the effect globalization has had on some American and Canadian workers?(1 point) • Many
1. 1 answer
2. 8 views
What events led to the revolutionary war?Five sentences
1. 1 answer
2. 7 views
What events led to the revolutionary warThree short sentences
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2. 10 views
What are some differences between the United States government and the Canadian governmentThree short sentences
1. 1 answer
2. 10 views
How did the environment influence the American Indian cultures of the northwest and southwestThree very short sentences
1. 1 answer
2. 9 views
Of the mean, median, and mode, which measure of center is most affected by outliers? Explain your reasoning including ten data
1. 1 answer
2. 8 views

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