Question and answer
Which of the following is a mixture? A. carbon dioxide B. silicon C. silicon dioxide D. sand
D. Sand is a mixture of many different particles.
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Original conversation
User: A mixture can be classified as a solution, suspension, or colloid based on the A. number of particles it contains. B. size of its largest particles. C. color of its particles. D. size of its smallest particles.

User: Which of the following is a mixture? A. carbon dioxide B. silicon C. silicon dioxide D. sand

Weegy: D. Sand is a mixture of many different particles.
arkelfarkel|Points 42|

User: A material that is malleable and conducts electricity is most likely A. wood. B. ice. C. a metal. D. motor oil.

Weegy: The answer is: C. a metal.
koaley|Points 6262|

User: Which of the following is a heterogeneous mixture? A. water in a swimming pool B. sugar water C. a jar of mixed nuts D. stainless steel

Weegy: B. sugar water
Caprisun|Points 849|

User: Flammability is a material’s ability to burn in the presence of A. hydrogen. B. nitrogen. C. oxygen. D. carbon dioxide.

Weegy: Flammability is a material?s ability to burn in the presence of A. hydrogen. [smile]
Mayang30|Points 746|

User: Which of the following is a physical change? A. sawing a piece of wood in half B. burning a piece of wood C. rust forming on an iron fence D. a copper roof changing color from red to green

User: A mixture that appears to contain only one substance is a(an) A. homogeneous mixture. B. heterogeneous mixture. C. compound. D. element.

Weegy: A mixture that appears to contain only one substance is a homogeneous mixture.
rdsa77|Points 8703|

User: If an unknown substance CANNOT be broken down into simpler substances, it is A. a compound. B. an element. C. made of one kind of atom. D. both b and c

Weegy: D. both b and c
sipichapie|Points 4794|

User: A substance that has high reactivity A. easily combines chemically with other substances. B. burns in the presence of water. C. displaces dissolved oxygen. D. has a high boiling point.

Weegy: The answer is A. It easily combines with other substances.
jcr.2008|Points 840|

User: Which of the following statements about ice melting is true? A. Energy flows from the ice to its surroundings. B. Water molecules move from their fixed position. C. Water molecules lose energy. D. The temperature of the ice increases as it melts.

Weegy: C. Water molecules lose energy about ice melting is true
Expert answered|uxiali|Points 1431|

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Asked 3/22/2013 3:20:27 PM
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Perform the modular arithmetic operation. [(5 - 9) · 3] (mod 5) A. 1 B. 2 C. 0 D. 3
Weegy: answer is D. 3! User: Perform the modular arithmetic operation. -12 (mod 5) A. 1 B. 2 C. 0 D. 3 Weegy: 2w - 2 = -12, 2w=-10, w=-5 User: Use the simple interest formula to find the missing value. Rates are annual rates. Assume 360 days per year and 30 days per month. p = ?, r = 4.5%, t = 10 days, i = $26.68 A. p = $21,344.00 B. p = $711.47 C. p = $7114.67 D. p = $21,670.09 Weegy: The answer is A. p = $21,344.0 The formula is 26.68 * 36) / 0.045 = 21 344 User: Write as a decimal. 249.4% A. 24.94 B. 24,940 C. 249.4 D. 2.494 Weegy: 249.4% = D.2.494 User: Solve the problem. Where appropriate, round to the nearest tenth of a percent. The price of a printer was reduced from $400 to $180. What was the percent decrease? A. 60% B. 122.2% C. 45% D. 55% Weegy: The price decrease is 70%. User: Use a day counting table to find the exact number of days from the first date to the second date. Assume the year is not a leap year unless otherwise indicated. January 15 to July 31 (a leap year) A. 197 B. 198 C. 213 D. 196 Weegy: b User: Use the sinking fund formula to determine the payment needed to reach the accumulated amount. Round the answer to the nearest cent. Annual payments with 5% interest compounded annually for 8 years to accumulate $6000 A. $736.92 B. $544.14 C. $628.33 D. $203.05 Weegy: c User: Solve the problem. Round to the nearest hundredth.45% of what number is 81? A. 180.00 B. 56.00 C. 1800.00 D. 0.56 (More)
Question
Not Answered
Updated 30 days ago|9/1/2014 2:21:51 AM
1 Answer/Comment
45% of 180 is 81.
81/45% = 81/0.45 = 180
Added 30 days ago|9/1/2014 2:21:51 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [9/1/2014 2:32:07 AM]
Three noncollinear points determine a triangle. How many triangles can be formed with 8 points, no three of which are collinear? A. 56 B. 24 C. 336 D. 6720
Weegy: I take it that's "no three of which are collinear." I also assume that "can be formed" ought to have been 'are determined by," because any triangle is actually composed of infinite points. This is equivalent to asking how many different [ combinations of 3 points we can select from the 8 possibilities, because each combination determines a different triangle. C(8,3) = 8! / (5! 3!) = 8*7*6 / (3*2*1) = 56 triangles. ] User: If 5 apples in a barrel of 25 apples are rotten, what is the expected number of rotten apples in a sample of 2 apples? A. 0.4 B. 1 C. 0.63 D. 0.33 Weegy: The answer is: Given the initial condition, the probability of an apple being rotten is 5/25 or 1/5, so 1/5*2=2/5, but of course you can not have 2/5 of a rotten apple, so you should round up to 1 apple. User: Find the probability. A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly five twos. A. 0.129 B. 0.921 C. 0.003 D. 0.083 Weegy: The answer is A. 0.129. The formula is: P(Five 2s) = (20C5) [(1/6)^5] [(5/6)^15] = 15504*0.000128601*0.064905472 = 0.129410292 User: How many ways can the letters in the word "WISCONSIN" be arranged? A. 38,572 B. 45,360 C. 69,620 D. 362,880 Weegy: The answer is B. 45,360 The formula is 9 letters i repeats twice n repeats twice s repeats twice User: A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly four twos. A. 0.202 B. 0.075 C. 0.101 D. 0.083 Weegy: 0.202 is the final answer. It's A. User: How would you find the empirical probability of getting a red card, if you are choosing a card from an ordinary deck of 52 cards? A. Choose a card from a deck of 52 cards many times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by the total number of times a card ... (More)
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Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability. The second marble is white given the first marble is blue.
Weegy: First marble is white: 3/(1+3+2+2)=3/8 For the second to be blue: 1/(1+3+2+2-1)=1/7 User: How would you find the empirical probability of getting a red card, if you are choosing a card from an ordinary deck of 52 cards? A. Choose a card from a deck of 52 cards many times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by the total number of times a card was chosen. B. Choose a card from a deck of 52 cards 2 times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by 2. C. The empirical probability cannot be determined. D. Choose a card from a deck of 52 cards 52 times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by 52. Weegy: D. Choose a card from a deck of 52 cards 52 times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by 52. User: If 5 apples in a barrel of 25 apples are rotten, what is the expected number of rotten apples in a sample of 2 apples? A. 0.4 B. 1 C. 0.63 D. 0.33 Weegy: C. 0.63 User: Find the probability. A lottery game has balls numbered 0 through 9. What is the probability of selecting an even numbered ball or a 5? A. 5 B. 3/5 C. 2 D. 2/5 Weegy: B. 3/5 (More)
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Asked 3/18/2013 4:37:46 PM
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A single die is rolled one time. Find the probability of rolling an odd number or a number less than 3.
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Asked 3/18/2013 4:58:47 PM
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Find the apportionment asked for. A small country consists of 7 provinces with the following populations: province a has 25312, province b has 19734, province c has 33407, province d has 19591, province e has 13288, province f has 22751, province g has 31992. There are 300 federal judges to be apportioned according to the population of each province. Find the apportionment for province G using Webster's method. A. 54 B. 55 C. 56 D. 53
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