# Questions Asked onNovember 20, 2013

1. ## Math Expoents

One microgram is equal to 1x10^-6 gram. If the mass of a substance is 8x10^9 micrograms, what is its mass in grams? a) 1.25x10^-15 b) 1.25x10^-3 c) 8x10^3 d) 8x10^15

2. ## waste water treatment

ACTIVATED SLUDGE AND NUTRIENT REMOVAL =========================================== A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and

3. ## Chemistry

calculate the minimum concentration of ag+ ion that must be added to (or built up in) a 0.140 m Na2CrO4 solution in order to initiate a precipitation of silver chromate. The ksp of ag2cro4 is 1.2 × 10^-12.

4. ## Modern Chemistry

Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu and is 50.69% abundant. Using the atomic mass reported on the periodic table, determine the mass of bromine-81, the other isotope of bromine.

5. ## math

Karen and Wayne need to buy a refrigerator because theirs just broke. Unfortunately, their savings account is depleted, and they will need to borrow money in order to buy a new one. Sears offers them an installment loan at 16% (add-on rate). If the

6. ## Intro to trigonometry

If sin(theta) < 0 and tan(theta) > 0 then: in degrees. Ok I need help with this I couldn't understand the lesson and want to know how to do problems like this. Please help me by showing me step by step! Thank u in advance.

7. ## waste water treatment

Description A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid

8. ## waste water treatment

QF Description Wastewater from a small town is treated in a trickling filter which is preceeded by a screen, sand-removal and primary clarification. The maximum hydraulic capacity, or peak flow, of the treatment plant is 1,500 m3/h. The dry weather flow

9. ## Math

There were 7 times as many marbles in Box A as in Box B. After Joyce transferred 294 marbles from Box A to Box B, both boxes had the same number of marbles. How man marbles were there in Box A at first.

10. ## maths

an aeroplane takes 40 minutes less to fly 3600km with the wind blowing at 30 km/hr than the time it takes to fly against the same wind .Find the actual speed of the aeroplane when there is no wind.

11. ## Chemistry

Rank the following in terms of increasing ﬁrst ionization energy. 1. Na, Mg, N, O, F 2. F, N, O, Mg, N 3. F, O, N, Mg, Na 4. O, N, F, Na, Mg 5. Na, Mg, O, N, F

12. ## Trig-Medians and law of cosines and sines

In triangle ABC, we have AB=3 and AC=4. Side BC and the median from A to BC have the same length. What is BC? Not making sense to me, I think the answer must be simple, but I don't know how to solve I applied the law of sines but to no avail. Help is

13. ## Math

Four hoses are filling a pool. The first hose alone would fill the pool in 4 hours while the second hose takes 6 hours. The third hose and the fourth hose each take 8 hours to fill the pool. How long would it take to fill the pool if all 4hoses are turned

14. ## biology

POLARITY COHESION SURFACE TENSION CAPILLARY ACTION UNIVERSAL SOLVENT ADHESION match definitions Because water molecules stick together, they form a thin film on the surface of pools of water, on which some organisms can walk Water molecules are able to

15. ## Health (Ms. Sue)

Differentiate between environmentally spread diseases and diseases that are spread from person to person. A: Environmentally spread diseases are spread by physical contact of objects in the environment, such as the telephone, doorknobs, and soil, in which

16. ## waste water treatment

ACTIVATED SLUDGE AND NUTRIENT REMOVAL =========================================== A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and

17. ## maths

there are 150 children in a school . two thirds of the children have school meals. how many children is that?

18. ## Math

What would the equation look like when the line is parallel to y= 3/4x-3 and has a Y-intercept of 3

19. ## electromagnets

A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

20. ## Health (Ms. Sue)

How can the failure to take antibiotics properly pose a risk to other people's health? A: The failure to take antibiotics properly can pose a risk to other people’s health as, by doing this, it leads to the development of antibiotic resistance, which

21. ## Statistics

Most people are definitely dominant on one side of their body - either right or left. For some sports being able to use both sides is an advantage, such as batting in baseball or softball. In order to determine if there is a difference in strength between

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m

23. ## cal

Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle. f(x)=3/x from x=2 to x=6; n=4

PLEASE CHECK THESE ANSWERS compare the pair of numbers use ,= 3/4 _ 6/8 A.3/4=6/8(I PICKED THIS) B.3/46/8 Write the decimal as a fraction or mixed number in simplest form. 3.45 A.4 3/4 B.4 9/20 C.3 3/4 D.3 9/20(I PICKED THIS

25. ## math

A package is at rest on a conveyor belt, which is initially at rest. The belt is started and moves to the right for 1.3 s with a constant acceleration of 2 m/s^2 . the belt then moves with a constant deceleration a2 and comes to a stop after a total

Can you please help me with writing fraction as decimal because im clueless with it! ------------------------- write the fraction as a decimal.28/15 A. 1.6 B. 1.86 C. 2.86 D. 28.15 ------------------------- Write an equivalent expression for 4g+2 using

27. ## chemistry

Glucose can be classified as an aldohexose. Name the following monosaccharide to indicate its carbonyl group and the number of carbon atoms. HO-CH2-C(=o)-c(H2O)-C(H2O)-CH2-OH

28. ## algebra - inequalities

Solve the inequality. 1/4x < 0.325 A. x > 1.3 B. x > 0.08125 C. x < 1.3 D. x < 0.08125 do i divide or multiply here? i think it's divide, in that case, i'd answer C.

29. ## HELP Biology

To find out which key will open a lock, you try several until one works. This kind of learning is called ________________________. I have no clue

30. ## biology

Draw a picture of the structure of a water molecule that includes all of the following: hydrogen, oxygen, partial positive charge(s), partial negative charge(s)

31. ## biology

Explain why water molecules are described as “sticky” is it because hydrogen bond that bonds together.

32. ## biology

Explain why water molecules are described as “sticky” is it because hydrogen bond that bonds together.

33. ## math

A support wire runs from the top of a tower to the ground. If the tower is 1200 feet tall and the wire is attached to the ground 500 feet away from the tower, how long is the support wire?

34. ## biology

Pretend you are taking a tour of a factory that creates macromolecules  Describe your journey through the 4 rooms in the factory – the Carbohydrate Room, the Lipid Room, the Protein Room, and the Enzyme Room. In each room, include the following: 1.

A 10 kg object with a velocity 7.5i m/s explodes into two equal fragments. One flies off with a velocity 2.5i -2.5j m/s. What is the velocity of the other fragment in vector notation?

36. ## Fundamental Theorm of Calculus

Find the average value of f(x)=7x^{-2} on the interval [1,5]

37. ## Finance

Treasury bonds paying an 8% coupon rate with semiannual payments currently sell at par value. What coupon rate would they have to pay in order to sell at par if they paid their coupons annually?

please check my math answers again thanks. by the age of 27,justin had visited 25 out of the 50 states.what fraction of the states had justin visited?write the answer in simplest form. A.2/1 B.25/50 C.1/2(I PICKED THIS) D.1/3 Heather drove 10 miles in 22

39. ## College Algebra

Change the equation 5x+3y=60 to slope-intercept form.

40. ## Pre-Calculus

A piece of equipment has cost function C(x)=50x^2 + 1000 and its revenue function is R(x)= 500x - x^2, where x is in thousands of items. What is the least number of items that must be sold in order to break even? 50x^2 + 1000 = 500x - x^2 50x^2 + x^2 +

41. ## College Algebra

Solve the System 2x-8y=20 3x-12y=30

42. ## Math Explaining

How would you use a number line to round 347 to the nearest ten?

43. ## Computers (Internet)

Is this considered plagiarism? Original passage: A letter of thanks is a courteous acknowledgment of a gift or of something that was done for you. Another passage: A thank you note is a polite acknowledgment of a present or something nice someone did for

44. ## physics

A microwave draws 5.0 A when it is connected to a 120 V outlet. If electrical energy costs \$0.090 per kW·h, what is the cost of running the microwave for exactly 6 h?

Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. The inclined plane is inclined at an angle of 37 degrees. The hanging block has

46. ## Warren

To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 13.2 g, and its initial temperature is -11.9 °C. The water resulting from the melted ice reaches the temperature of your skin, 30.0 °C. How much

47. ## Scientific Notation - PLEASSEE

A rectangular yard had a length of 0.006 kilometer and a width of 5x10^-3 kilometers. A. Use scientific notation to express the ares of the yard in kilometers, showing each step in the process. B. Convert the area into square meters using the conversion

48. ## Physics

A ball on the end of a string is cleverly revolved at a uniform rate in a vertical circle of radius 85.0cm. If its speed is 4.15 m/s and its mass is 0.300 kg, calculate the tension in the string when the ball is (a) at the top of its path, and (b) at the

49. ## Math Questions (AGAIN)

Hi! Someone was helping me earlier with these but their explanation was hard to understand. Can someone ELSE help me? Thanka! :) 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that

50. ## Chemistry

Why does Cl- have a larger ionic radius than CA2+ ?

51. ## Chemistry

Why does Cl- have a larger ionic radius than Ca2+ ?

52. ## English

The pool, “covered up since the end of summer”, is now open, clean and ready to use. a. infinitive phrase b. participial phrase c. gerund phrase d. prepositional phrase B

53. ## cal

Use the differential to approximate the quantity to four decimal places. √(122)

54. ## math

Lindsey ha saved \$12 tot go to the movies.This is \$3 more than the twice the cost of a movie.What is the cost of a movie?

55. ## math

Solve the proportion: 4 2 --- = --- 3.2 x A. 6.4 b. 2.5 c. 1.6 d. 0.8 My answer is c ?

56. ## Science

Uranium-238 is less stable than oxygen-16. What accounts for this difference? (A) Uranium is a solid, while oxygen is a gas. (B) Unlike oxygen-16, uranium-238 has a nucleus in which repulsive electric forces surpass the strong nuclear forces. (C) Oxygen-16

57. ## Physics

Design an AC circuit with R, L, and C components so that it can achieve output voltage in a given load to be doubled in amplitude (magnitude) while achieving increase in the phase shift of the output voltage of 45 more than the phase of the input voltage.

58. ## English !!!

To find out which key will open a lock, you try several until one works. This kind of learning is called ________________________.

59. ## understanding and managing money

which of the following statements about money invested in a traditional ira account is correct?

60. ## English

Ever since Lisa auditioned for the musical Annie in the third grade, she had been seriously interested in musical theater. She loves to sing, dance, and act. She performs in two or three shows in her city each year. This year, Lisa was excited to audition

61. ## Math

1. Solve the proportion: z z+9 ---- = ---- 3 12 A. 4 b. 3 c. 2 d. 1 my answer is c ? 2. Solve the proportion: 16 = 8 --- --- 4d+2 3 A. 1^ 11 --- 12 b. 1^ 1 -- 3 c. 1 d. 2 My answer is D ? 3. A solution contains 2.2 liters of water. Convert this measurement

62. ## algebra

find the length of each person's sandwich? an 18inch long sandwich was purchased & Jenny cuts the sandwich so that Demi gets 1/2 of what Jenny gets and Joel gets 3/4 of what Jenny gets.

63. ## Physics

A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 92.9 m/s2 for 1.85 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude

64. ## Organic Chemistry Help Please

We're going over the reactions involving Alkenes and Alkynes. However, I'm extremely confused I how to determine with solvent/solvents to use and also when already given the solvents with the reactants how this will effect the products. I studied the basic

65. ## MATHS

The sum of three numbers is 1313. The sum of two of the numbers is 450. What is the third number?

66. ## Physics

How to add vectors in terms of velocity by using vector chart

67. ## math :)

1. A toy airplane is 10 inches long.If the actual airplane is 75 feet long, find the scale of the model. A. 2:14 ft B. 1:90 ft C. 4:25 ft D. 1:120 ft My answer is B ?

68. ## Math

I need help with these please: 4. Simplify sqrt27/75. The answer should be in simplest form 5. Solve for w. (3w-15) (w^2 + 11w +30) = 0 Thanks -MC

69. ## Chemistry

Sodium vapor lamps are often used in residential street lighting. They give off yellow light with a frequency of about 5.91 × 1014 Hz. What is this wavelength in nm?

70. ## biology

1 – 2 sentences why each of the following unique properties of water is important to living things Water is the universal solvent: Water is less dense as a solid than as a liquid Water molecules are attracted to one another (cohesion) Water molecules are

71. ## Fundamental Theorm of Calculus

Find the average value of f(x)=3x^2-2 x on the interval [3,6]

72. ## magnetism

A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region

asked by Anton (Elena Pl: check)
73. ## Algebra (math)

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon?

74. ## Health (Ms. Sue)

Describe how bacteria develop antibiotic resistance. A: Bacteria develop antibiotic resistance when it changes in a manner in which reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. Also,

75. ## algebra

To the nearest tenth of an inch, find the length of a diagonal of a square whose side length is 8 inches.

76. ## Algebra 1

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (also write an equation)

77. ## Maths

2(y+2)^2*+4(y+2) 15(x-1)^2-10(x-1) 8(p+5)^2+10(p+5)

78. ## Maths

9(q+1)+6(q+1)^2 7(a-b)(a+b)-14(a+b) 4x^2(x+1)-6x(x+1)

79. ## Math Question

Hello! I have a question about a word problem: A garden supply store sells two types of lawn mowers. The cashiers kept a tally chart for the total number of mowers sold. They tallied 30 mowers sold. Total sales of mowers for the year were \$8379.70. The

80. ## Algebra

If 9876^2=97,535,376 Find the value of 9877^2 and (9874)(9878) without using a calculator

81. ## math

The Empire Carpet Company orders merchandise for \$17,700, including \$550 in shipping charges, from Mohawk Carpet Mills on May 4. Carpets valued at \$1,390 will be returned because they are damaged. The terms of sale are 2/10, n30 ROG. The shipment arrives

82. ## Health (Ms. Sue)

Describe how bacteria develop antibiotic diseases. A: Bacteria develop antibiotic resistance when a person stops taking antibiotics before the prescription is finished. By doing this, most of the bacteria die, but some more resistant bacteria survive and

83. ## math

If the there's 50 players which number of players can be arranged in the shape of a square

84. ## Math

Warren is riding his bike at 15 mph on a road adjacent to railroad tracks. A train traveling at 90mph in the opposite direction as Warren, takes 20 seconds to pass him. How long is the train?

85. ## algebra

How do i write an equation of a line with the given slope and y-intercept for m= 2/9, b=3?

86. ## Algebra 1

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What are the independent variable and dependent variable

87. ## Statistics

A packing company investigates a national training consultant in hopes of improving productivity on the packing line. The national consultant agrees to work with 18 employees, collecting productivity data for each employee before the training program and

88. ## Physics

A container holds 1.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 6.6x10-3 kg bullet with a speed of 670 m/s. What is the Kelvin temperature of the gas?

89. ## Math

The ratio of cats to dogs is 2:1 and the ratio of dogs to parrots is 15:2. In addition, the ratio of parrots to snakes is 3:1 and the ratio of snakes to turtles is 6:7. What is the ratio of cats to turtles?

90. ## Physics

Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?

91. ## physics

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m.

92. ## Math

Hi! I have 4 math questions! (: 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both Saturday and Sunday? 2.)In a shipment of alarm clocks, the probability that

93. ## Trigonometry

simplify: tanx/secx+1

94. ## math

integral problem 8^7dx=

hi please check my math answers i only have 2 for now i just wanted to make sure i had the right idea. sarah is making her own halloween costume.The costume requires 2 5/8 yards of materials.Write the number of yards needed for sarahs halloween costume as

96. ## Health (Ms. Sue)

Describe how vaccinations work to protect the body from illness. A: When a vaccine is injected or swallowed, the immune system responds to the vaccine material by making white blood cells called memory cells. Therefore, when or if the pathogen against

97. ## Physics HELP!!

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 200 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal (see

98. ## College Algebra

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Write an equation in stand form that represents all the different combinations of mints and gumballs that Kathleen might have purchased.

99. ## TRIANGLE SIMILARITIES RATIOS AND PROPORTIONS

imageshack(.)(us)/photo/my-images/834/j6wv.jpg/ imageshack(.)(us)/photo/my-images/17/6n4x.jpg/ please PLEASE IM BEGGING YOU MY TEACHER WILL BE GIVING ME 79 IF I DIDN'T GET THIS .. OR ELSE LOWER THAN THAT. PLEASE TRIANGLE SIMILARITIES RATIOS AND PROPORTIONS

100. ## south carolina history

which of the following terms defines an attack that encircles and limits supplies? siege skirmish stalemate confiscation please help me i just got 3 more!!!!!

101. ## Math

What would the equation look like if the line is perpendicular to y=x+2 and has a y-intercept of 0?

102. ## Physics

A plane flies due north (90° from east) with a velocity of 100 km/h for 3 hours. During this time, a steady wind blows southeast at 30 km/h at an angle of 315° from due east. After 3 hours, where will the plane’s position be relative to its starting

103. ## Math

What is the equation look like when the line is perpendicular to y= 4-3x and has y intercept of 3/4?

104. ## physics

3. You travel from New Orleans, Louisiana, with the following vectors: • New Orleans à Point A: q = 180°, Δd = 483 km • Point A à Point B: q = 106°, Δd = 347 km • Point B à Point C: q = 106°, Δd = 347 km Remember: east = 0°, north = 90°,

105. ## Math questions

Hi! Someone was helping me earlier with these but their explanation was hard to understand. Can someone ELSE help me? Thanka! :) 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that

106. ## physics

1. A man pulls a crate with a rope. The crate slides along the floor in the horizontal direction (x direction). The man exerts a force of 50 N on the rope, and the rope is at an angle q. Describe how the force components (Fx, Fy) change as the angle

107. ## Math

If the problem is: 3x-22 = x+80 what would x equal? Please show your work.

108. ## south carolina history help me ASAP PLZZZZZ

_______ established a lower house, an upper house, and a president who could not be elected. declaration of independence treaty of paris south carolina constitution of 1776 townshend acts

109. ## Calculus Fundamental Theorem

Evaluate the definite integral. function: x+13 with respect to variable x lower limit:0 upper limit:22

110. ## Science

Luis wanted to create a clay model of earth and the sun. To show how Earth rotates, Luis wants to use a toothpick to represent Earth's axis of rotation. Where should Luis place the toothpick? A. Horizontally through Earth in the direction Earth is

111. ## Statistics

When comparing two samples that are independent of one another, we use the two-sample t-test. A) True B) False 5. Using paired differences helps to reduce the variation. A) True B) False Both are True?

112. ## south carolina history help me ASAP PLZZZZZ

which state voted first against independence, but eventually voted for it? new york north carolina delaware south carolina

113. ## Calculus Fundamental Theorem

Evaluate the definite integral. function: (t+8)(t^2+3) with respect to variable t lower limit: -sqrt(2) upper limit: sqrt(2)

114. ## Algebra 1

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (write the equation as a

115. ## south carolina history help me ASAP PLZZZZZ

which of the following was an important change made to south carolinas second constitution in 1778? the low country had many more representatives than the up country. the state leader would be a governor, not a president. the press was more limited in what

116. ## College Algebra

A company that bought a machine for \$30,000 wants to depreciate its entire value equally over the next ten years. Write an equation that represents the machine's value, v, in terms of the number of years that have passed since the machines purchase, t.

117. ## Math

Leslie saw 8 squirrles at the park. She saw 5 birds and 12 ants. how many more ants and birds did Leslie see than she saw squirrles?

118. ## Math

Sophia went to an amusement park. She went on 18 rids in all. 7 of the rides were roller coasters. How many of the rides Sophia went on were not roller coasters?

119. ## math

A map has a scale of 3 centimeters = 4 kilometers. If two cities are 8 centimeters apart on the map, what is the actual distance between the cities, to the nearest tenth of a kilometer?

120. ## Physics

An astronaut is at rest 1.0 m away from his shuttle when his jet malfunctions and his hand-held radio dies. unable to reach his shuttle to return to safety, a) what can the astronaut do to get himself back to his ship? b) Which of Newton's three laws would

121. ## Physics-Attention ELENA

A circular plate with a slot in its surface is rotating with angular velocity ω and angular acceleration α with respect to a fixed coordinate system, OXYZ as shown. A ball B moves along the slot in the direction shown with velocity, v, and acceleration,

Last month, Sue, of Sue's Sandwiches, sold \$3,000 worth of product (sandwiches and sodas) from her sidewalk cart to 300 customers. She spent \$600 on the sandwich ingredients and buying the sodas wholesale. Her monthly costs are the following: Utilities =

123. ## Trigonometry

(1/(cscx+1))-(1/(cscx-1))

124. ## magnetism

A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

125. ## Physics

Posting this question again Design an AC circuit with R, L, and C components so that it can achieve output voltage in a given load to be doubled in amplitude (magnitude) while achieving increase in the phase shift of the output voltage of 45 more than the

126. ## magnets

A proton with a velocity of 2.0 x 10^7 m/s in the horizontal (+x) direction enters a region of uniform magnetic field that is 1 meter wide and points out of the page with a magnitude of 0.05 Tesla. At what angle below the x-axis, in degrees, does the

127. ## Social Studies (History)

If I created a character who is a Bosnian refugee what does "where did he/she come from? (Place and time). Mean?

128. ## South America

What is the longitude and latitude of every piece of south America?

129. ## chemistry

First off, how do you eve find out if it would be colored or colorless? Will aqueous solutions of the following salts be colored or colorless? Explain. a. Titanium (II) chloride b. Beryllium chloride c. Tin (II) nitrate d. Iron (III) nitrate

130. ## biology need help

1 – 2 sentences why each of the following unique properties of water is important to living things Water is the universal solvent: Water is less dense as a solid than as a liquid Water molecules are attracted to one another (cohesion) Water molecules are

131. ## chemistry

Potassium metal, K, is more reactive than sodium, Na. Calcium, Ca, is less reactive than sodium. The comparative reactivity of these metals is K > Na > Ca. Explain the reactivity differences of K, Na and Ca based on their atomic structure.

132. ## physical

Which of the following statements is true concerning physical space in physical education

identify the fraction that is equivalent to 3/8. A.15/32 B.12/32(I PICKED THIS) C.12/24 D.9/32 -------------------------- A video game has three villains who appear on screen at different intervals.one villain appears every 5 seconds,a second villain

134. ## science

Does 'cocoa bean' mean 'cacao bean'? What is the difference between 'cacao' and 'cocoa'?

135. ## Fundamental Theorm of Calculus

Use a definite integral to find area of the region under the curve y=7-4x^2 and above the x-axis. Thanks in advance!

136. ## College Algebra

A 50 gallon barrel plumb full of water springs a leak in the bottom and leaks at a constant rate of two gallons per minute. Write an equation that relates the amount of water left in the barrel, y in terms of how many minutes have passed since the leak

137. ## Math (Calculus)

Tower 1 is 60 ft high and tower 2 is 20 ft high. The towers are 140 ft apart. A guy wire is to run from point A to the top of each tower. [See a picture of this situation on page 274 of the textbook.] How many feet from tower 1 should point A be so that

138. ## Math

A bottle of juice holds 3/8 gallon when it is full. If 1/3 of the juice has been poured out, how much juice is left in the bottle?

139. ## sosial studies

When 1.0 L solution Ba (NO3) 2 2.0 M at 25oC is mixed with 1.0 L solution of 2.0 M Na2SO4 in a calorimeter, the reaction that occurs to produce solid barium sulfate and temperature of the mixture increased to 28.1 oC. Calculate the enthalpy change per mole

140. ## math

10 2/9-(-3 1/3)

141. ## math

cot^2(x)-1/1+cot^2(x)

142. ## Algebra NEED HELP ASAP!!!!!!

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (write the equation as a

143. ## home school

the sum of two numbers is 42. their product is 185. what are the two numbers

144. ## chemistry

consider the following reaction at 298K 4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr find delta S unvi

145. ## maths

how much more is 18p + 17p than 2 * 15p?

146. ## Social Studies (History)

What does it mean by setting a scene?

147. ## Chemistry

Which of the following groups are indicative of anionic polymerization? a)F b)Cl c)COOCH3 d)H e)CH2CH3

148. ## houston community college

gordon rosel went to his bank to find out how long it will take for 1,200 to amount to 1,650 at 8% simple interest. round to the nearest tenth

149. ## Statistics

Battery manufacturers compete on the basis of the amount of time their products last in cameras and toys. A manufacturer of alkaline batteries has observed that it's batteries last for an average of 26 hours when used in a toy racing car. The amount of

150. ## statistics

I am conducting a study on support of ban on smartphones in class. 68/87 said yes to the ban. How large of a sample is needed to be sure the margin of error +/- 3.5% with 99% confidence. I know this is estimation...but I am not sure how to go about solving

151. ## Math Exponenet Word problem

A microscope is set so it makes an object appear 4x10^2 times larger than its actual size. A virus has a diameter of 2x10^-7 meter. How large will the diameter of the virus appear when it is viewed under the microscope?

152. ## math

Write a situation that can be represented by 3.25d

153. ## College Algebra

Write an equation for the amount of money, A, that we would have if we invested \$2000 at 8% interest for 10 years compounded semiannually (twice each year)

154. ## College Algebra

Write an equation for the amount of money, A, that we would have if we invested \$25,000 at 6% per year for 5 years compounded instantaneously.

155. ## maths

what is the distance around this rectangle?

156. ## maths

find the change from £3 after spending £1.40 and 80p.

157. ## statistics

conduct a study on support of ban on smartphones in class. 68/87 said yes. How large of a sample is needed to be sure the margin of error +/- 3.5% with 99% confidence. I know this is estimation...but I am not sure how to go about solving this problem.

158. ## physics (Urgent)!!!!!!!!!!!!!!!!!!!!!!

A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 300 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizontal. The

159. ## physics(URGENT!!!!!)

EDXers!!! Plz help with MITx 8.01x I don't know how to solve HW8 Problem 3 Question c) Can anybody help me???? Explain Plz

160. ## science

A 2.94 kg ball is attached to a ceiling by a 1.88 m long string. The height of the room is 5.05 m . The acceleration of gravity is 9.8 m/s2 . What is the gravitational potential energy associated with the ball relative to the ceiling? Answer in units of J

161. ## mit

A spacecraft of mass m is first brought into an orbit around the earth. The earth (together with the spacecraft) orbits the sun in a near circular orbit with radius R (R is the mean distance between the earth and the sun; it is about 150 million km). (a)

162. ## Math

Solve and check each equation 1a. 12n=36 n=3 1b. n-5=8 n=13

163. ## dynamics

a 2kg ball revolves in a horizontal circle as shown at a constant speed of 1.5m/s. Knowing that L=600mm, determine (a) the angle that the cord with the vertical (b) tension in the cord.

164. ## Economy (vehicles)

What is a bi-wheel vehicle?

165. ## Algebra, URGENT!!!

1) The first leg of a right triangle is 6 cm longer than its second leg. If the hypotenuse has a length of 8 cm, find the exact lengths of the two legs. First Leg: Second Leg: 2) The length of a rectangle is 10 m longer than its width and the area of the

166. ## TRIANGLE SIMILARITIES RATIOS AND PROPORTIONS

imageshack(.)(us)/photo/my-images/834/j6wv.jpg/ imageshack(.)(us)/photo/my-images/17/6n4x.jpg/ please PLEASE IM BEGGING YOU MY TEACHER WILL BE GIVING ME 79 IF I DIDN'T GET THIS .. OR ELSE LOWER THAN THAT. PLEASE

167. ## Math

1.) You have \$22 in your bank account, and you deposit \$11.50 per week. Your cousin has \$218 in his bank account and is withdrawing \$13 per week. The graph of this problem situation intersects at x=8. What does this mean? A. In 8 weeks, you will have

168. ## Math

6m-3=21 m=4 g/4+7=10 How do I solve this one g/4 is suppose to be a fraction 3+2x=17 7

169. ## Computers (internet)

How can I paraphrase: In the metropolis the recreational area was dilapidated.

170. ## english

You are the phantom/ plague king who killed all the nobles in “The Masque of the Red Death” (lesson 4), and you have been captured and put on trial. Write a letter to the jury persuading them that the nobles deserved to die.

171. ## Math Properites

Mohammed copies this problem into his notebook (3.4x10^5)(3.8x10^-9) A. Use the associateve and commutatitive properties to rearrange the factors. B. Find the product. Write the product in standard form.

172. ## biology

Draw a picture of the structure of an atom that includes all the following: protons, neutrons, electrons, nucleus, orbitals

173. ## Statistics

Given the following p values which would be considered more significant? a) p ≤ 0.3 b) p ≤ 0.02 c) p ≤ 0.25

174. ## Statistics

How could you reword these research hypotheses to null hypotheses? a. Smoking during pregnancy increase the risk of a child being born prematurely. b. Regular exercises in older adults decreases blood pressure levels.

175. ## Statistics

Create a null hypothesis for the following research questions: a. What are the differences between emergency room shifts on medication errors? b. On a clinical trial of a new drug, what will be the effects over a currently used drug?

176. ## Social studies

I need help on this one question on my homework. Would you please help me? How did the presidential plan for reconstruction differ form congresses plan? A congress believed it and not the president should have power over reconstruction. B the president

177. ## cal

Find the average value of the function on the given interval. f(x)= √x+2; [1,7]

178. ## Math

What would the equation look like when the line is perpendicular to x+2y=10 and has a y-intercept of -10

179. ## Chemistry(Dr.Bob222)

What does it mean for something do to be neutralized? Is that when the [H+]=[OH-]? or is that totally wrong?

180. ## Math

What would the equation look like when the line is perpendicular to 2x-3y+1=0 and has Y- intercept of 2/3

181. ## Health (Ms. Sue)

Differentiate between environmentally spread diseases and diseases that are spread from person to person. By "environmentally," is it referring to food, water, and the environment or merely the environment?

182. ## Math

What would the equation look like when the line is perpendicular to 2x-3=4y and has Y- intercept of -5/4

183. ## Visual Literacy in Business CGD218

As stated in your textbook, “branding is equated with everything from creative strategy to logotype design. It is said to exist through sophisticated color palettes, product packaging and service trademarks. Some marketers insist that branding is

184. ## Math

What would the equation look like when the line is parallel to y=-2x+3 and has a Y-intercept of -1

185. ## Geometry

Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles are each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter.

186. ## College Algebra

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending \$2.00. Write an equation in standard form with integer coefficients that relates x and y.

187. ## ANALYTICAL CHEMISTRY

A 24-h urine specimen was diluted to 2.000L and buffered to pH 10.0. A 10.00 mL aliquot was titrated with 27.32 mL of 0.003960 M EDTA. The calcium in a second 10.00 mL aliquot was iso;ated as solid CaC2O4, redissolved and titrated with 12.21 mL of the EDTA

188. ## Physical Science

3. Radioactive decay of nuclei often involves several decays before a stable nucleus is formed. This is called a decay chain. What stable isotope is formed when radon-222 undergoes a decay chain of four alpha decays followed by four beta decays? (A)

189. ## Visual Literacy in Business CGD218

he textbook explains that, although counterintuitive, advertising should not focus on the product or service being sold, but should rather focus on the needs and desires of its target market. It quotes Michael Newman (2003) stating: “Don’t tell me

190. ## Math

What would the equation look like when the line is parallel to y= -x+1/2 and has a Y-intercept of -2

191. ## science

1. In this family, Noonan’s Syndrome is being caused by allele (a)______ in gene (b)______; specifically the Mutation with letter (leave off the “Mutation” and just give the letter) (c)______. 2. In this family, deafness is caused by a mutation in

192. ## Algebra 1

write in standard form y+4=1(x-2) Can you explain how to get the answer

193. ## Math

What would the equation look like when the line is parallel to 2x-3y=1 and has a Y-intercept of 0

194. ## Math

What would the equation look like when the line is parallel to x=3y-2 and has a Y-intercept of -3/2

195. ## Math

What would the equation look like when the line is parallel to x-y+1=0 and has a Y-intercept of 3/4

196. ## Math quick question

Create a system of linear equations with this situation: Megan considers two different car rental options. One option costs \$19 per day plus \$0.12 per kilometre . Another option costs \$42.50 per day for unlimited kilometres . Thanks :)

197. ## Physics

Two blocks are attached together with a piece of string. Block #1 (3 kg) slides along a rough horizontal surface and block #2 (2 kg) hangs off the end of the surface. If the blocks accelerate at 2.5 m/s2 in the directions shown, determine the tension in

198. ## Language Arts- Johnny Tremain

Has anyone here read the novel Johnny Tremain? If so, I will post my questions and answers.

199. ## Chemistry

how do i know which compounds to put the roman numeral in?

200. ## ENGLISH

What are the PROS and CONS in the story of The Boston Photographs by Ephron short story??

201. ## MATH - Standard Form

Mohammed copied this problem into his notebook. (3.4x10^5)(3.8x10^-9) A. Use the associative and commutative properties to rearrange the factors. B. Find the product and write it in standard form.

202. ## Psy/355

I need help with my research paper please. 700- to 1,050-word paper in which you examine the concept of motivation. „h Address the following items: o Define motivation. o Identify at least two sources of motivation. o Explain the relationship between

203. ## Physics

A 25 g bullet is fired from a rifle with a barrel of length 65 cm. The bullet starts from rest at one end of the barrel and experiences an average force of 1200 N due to the expanding gases as it moves down the length of the barrel. a) Calculate the work

204. ## cal

Find dy for the given values of x and Δx. y=4/x^4+3√x; x=4, Δx=.5

205. ## into computers

Your boss is considering a BYOD program for your company. He asks you if there are any negatives to such a program. What do you tell him? A. It limits the freedom of the user to access websites and applications. B. It introduces security and control

206. ## Physics

Mars has a moon (Phobos) with an orbital period of 7.67 hours and an orbital radius of 9.4x106 m. Use Kepler’s 3rdLaw to estimate the mass of Mars.

207. ## Physics

A Jet plane traveling 1800 km/h (500 m/s) pulls out of a dive by moving in an arc of radius 6.00 km. What is the plane’s acceleration in g’s?

208. ## Math

1.) You have \$22 in your bank account, and you deposit \$11.50 per week. Your cousin has \$218 in his bank account and is withdrawing \$13 per week. The graph of this problem situation intersects at x=8. What does this mean? A. In 8 weeks, you will have

209. ## math

A car with a sticker price of \$42,850 with factory and dealer rebates of \$5,100 Find the monthly payment if financed at 2.5% add-on interest for 60 months.

210. ## English

"Eating flesh with razor-sharp teeth" is how piranhas survive. prepositional phrase gerund phrase participial phrase appositive phrase A?

211. ## health care

Quality Improvement tools are the control chsrts or fishbone diagram. The quality measurement tools to measure things like patient falls would be like CMS or the Joint Comission. I do know if I am correct or not Thank You