1. math

In a survey of 150 students, 90 were taking algebra, and 30 taking biology. a. what is the least number of students who could have been taking both classes? b. what is the greatest number of students who could be taking both courses? c. what is the

Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are supposed to be multiplied. 2

3. Geography (Ms. Sue)

1). What are some of the ways cities are dealing with urban sprawl? 2). What are some of the ways citizens are dealing with urban sprawl?

4. chemistry

As a technician in a large pharmaceutical research firm, you need to produce 200.mL of 1.00 M a phosphate buffer solution of pH = 7.19. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as

5. Mechanics

a driver of a 1200-kg car notices that the car slows from 20 m/s to 15 m/s as it coasts a distance of 130 m along level ground. How large a force opposes the motion? Show the solution

6. chemistry

The subject is stoichiometry. How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?

7. Geography (Ms. Sue)

1). What happened in the terrorist attacks on the United States on September 11, 2001, and who was believed to be responsible? 2). How did the United States respond to the attacks? My answers to these questions are the following: 1). On the morning of

8. Two Voice poem

Ok so I have to write a two voice poem on Christopher Columbus finding America, ok so I'm supposed to write how the Europeans felt when they found America and how the Taino (the Indians that were originally there)felt about what happened, and I'm kind of

9. Math

The Cupcake Cafe makes 4 1/2 times as much revenue on doughnuts as muffins. If the total sales was \$44,000 for May, what dollar amount of each was sold?

10. Science

A student observes dark clouds are surrounding the school and the grass on the playground is wet. The student reasons that it rained. Which scientific skill did the student use to determine that it rained? A)Classification B)Observation C)Inference

11. physics

An Australian emu is running due south in a straight line at a speed of 16.9 m/s and slows down to a speed of 13.9 m/s in 3.5 s. Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.0 s has elapsed? (Assume

12. math

Let V be the volume of the solid that lies under the graph of f(x,y)= (52 − x^2 − y^2)^1/2 and above the rectangle given by 4 ≤ x ≤ 6, 0 ≤ y ≤ 4. We use the lines x = 5 and y = 2 to divide R into subrectangles. Let L and U be the Riemann sums

13. science

Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?)Grams of NaCl

14. Algebra

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student receive in order to have a final average of 76 percent? Thanks!!

15. Geography (Ms. Sue)

1). What are some of the causes of urban sprawl? 2). What are some of the effects of urban sprawl? 3). What happens when metropolitan areas spread farther and farther out? 4). What are some of the negative effects of urban sprawl? My answers to these

16. college math

system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}

17. Physics

Surprisingly, very few athletes can jump more than 2.7 ft (0.82 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 0.82 m vertical jump. Then double it for the "hang-time" -- the time one's feet are off the ground. Can you

18. algebra b

the height h in feet of a ball after t seconds is given by h=176t-16t^2. how long did it take to hit the ground

19. Math

1. Select the first five terms in the arithmetic sequence an= 2 n , starting with n =1 A. ( 1 / 2 , 1/4 ,1/6, 1/8, 1/10) B. ( 1 , 2 , 3 , 4 , 5 ) C. ( 3 , 4 , 5 , 6, 7 ) D. ( 2 , 4, 6 , 8, 10 ) My answer is D. 2. Select the first five terms in the

20. Statistics

Here's the five- number summary for the distribution of cigarette taxes (in cents) among the 50 states and Washington, D.C. in the United States. Min. = 2.5, Q1= 36, Median = 60, Q3= 100, Max. = 205 About what proportion of the states have cigarette taxes

21. physics

While two forces act on it, a particle is to move at the constant velocity = (3.99 m/s) - (-3.19 m/s). One of the forces is 1 = (1.32 N) + (-5.76 N). What is the other force?

22. Pysics

A caiman swims 185 meters at a speed of 6 m/s. It then enters a stream and slows to 2 m/s for 310 meters. What is the average speed of this cousin of the crocodile?

23. math

explain how you would decide how to divide a school of 2080 students into sets.

24. MATH

Here's the five- number summary for the distribution of cigarette taxes (in cents) among the 50 states and Washington, D.C. in the United States. Min. = 2.5, Q1= 36, Median = 60, Q3= 100, Max. = 205 About what proportion of the states have cigarette taxes

25. PHYSICS

To simulate the extreme accelerations during launch, astronauts train in a large centrifuge. If the centrifuge diameter is 13.5m , what should be its rotation period to produce a centripetal acceleration of If the centrifuge diameter is 13.5m , what should

26. physics

A 5.30kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 76.0N .If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 14.0m without breaking the cord?

27. dma 040

42 inch board is cut into 3 pieces. Piece 2 is twice as long as the 1st & 3rd piece. Piece 3 is three times as long as piece 1. Find inches of all three pieces

28. physics

A copper wire has a diameter of 1.532 mm. What magnitude current flows when the drift velocity is 0.500 mm/s?

Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root: 2 square root 48 3 square root 81 6 square root 12 3 square root 32 2

30. physics

A motorist traveling with constant speed of vc = 16.0 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates

31. Math

1. Factor Form : 1x1x1x1 Exponent Form : 1^4 Standard Form : 1 2. Factor Form :2x2x2 Exponent Form : 2^3 Standard : 8 3.Factor Form : (-6)(-6)(-6) Exponent Form : (-6)^3 Standard : -216 4.Factor Form : 5x5x5 Exponent form : 5^3 Standard 125

32. math

complete the table given values of x. then use the table to solve the given equation numerically. x-5=-4 x -1 0 1 2 3 x-5 -6

33. suno

a 250 g yoyo is swung on the end of a 50cm string at a constant speed of 4/ms. the centrpetal force acting on the yoyo

34. dma 040

Sport competition. France won more gold medals than Italy who won more medals than Korea. Total number of gold medals won by three countries is three consecutive integers who sum is 27, find number won by each country France Italy Korea

35. Instagram Project??

Hi I was wondering if there was any website online that you can do an "instagram" for kind of a roleplay

36. DBA

A quantitative analysis method which aggregates a number of (similar) individual studies into a large data set from which to compute an over all “effect size” (based on similar study procedures and treatments) is commonly known as

37. dma 040

2 angles are supplementary if their sum is 180degress. Larger angle measures four degrees more than seven times the smaller angle. X represent the smaller angle and these two angles are supplementary. Find measure of each angle.

38. ENGLISH (ESL)

PROOF READING A nurse was working in ER, during her shift, she see a patient who is having a fever of 101 degree F. The patient also has a open wound on his left leg, the wound is red, painful, swollen, and foul-smelling pus is showing signs of infection.

39. physics

To simulate the extreme accelerations during launch, astronauts train in a large centrifuge. If the centrifuge diameter is 13.5m , what should be its rotation period to produce a centripetal acceleration of If the centrifuge diameter is 13.5m , what should

40. Algebra

A sales force has 10 men and 10 women. A production unit of 7 people is set up at random. What is the probality that it will consist of 3 men and 4 women

41. Social Studies

What is a faction? Why are majority factions more dangerous than minority factions, according to James Madison?

42. PHYSICS!!!

To simulate the extreme accelerations during launch, astronauts train in a large centrifuge. If the centrifuge diameter is 13.5m , what should be its rotation period to produce a centripetal acceleration of If the centrifuge diameter is 13.5m , what should

43. science

A student makes the following statement: Chocolate- covered donuts are 10 times better than plain, glazed donuts. Which of the following correctly describes the student’s statement? a-The student’s statement is a quantitative observation. b-The

44. Engineering

Steel column is 80 feet tall. Column is a W 14 x 730(wide-flange beam) The cross sectional area is 215 sq in. Supports a floor load of 6600 K. Determine the stress in the column and how much it will shorten due to the 6600K load. (Assume E= 29,000,000

45. math working backwards

Sandra spent one-fifth of her money and loaned one-third of the remainder to her brother. She had \$24 left. How much did she begin with?

46. calculus

evaluate lim x aproches -1 x^2+6x+5/x^2-3x-4

47. science

'The subscripts in the chemical formula for a molecular compound are not always in the lowest ratio.' Using what you know about naming binary molecular compounds, provide evidence that supports this statement.

48. Retail Math

If an accessory department shows a gross margin of 53 percent and retail reductions amounting to 16 percent, what is the initial markup%? I have calculate: IMU%= (53% + 16%) / (100% + 431.25) IMU% = 431.25% / 123.18% IMU% = 350.09% x 100% IMU%= 350.09 is

49. MATH ASAP

Eliminate the parameter to find a cartesian equation x= 1-t^2 y=t-2 -2 _

50. physics

-------------------------------------------------------------------------------- A tennis ball with a speed of 11.4 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 8.64 m/s. If

51. Algebra

what are the appropriate metric units for measuring Bryce Canyon National Park

52. Math 1 quick question

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

54. Algebra

Find the equation of the circle having the given center and radius. center (-5,1), radius 6 squared.

55. Math

miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?

56. Math

miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?

57. Technology

What is a object in which the electrons at one end spin in one direction and the electrons at the other end spin in an opposite direction? A. load B. turbine C. Magnet D. Charge

58. math

Len is baking a square cake for his friend wedding. When served to the guests, the cake will be cut into square pieces 1 inch on the side. The cake should be large enough so that 121 guests get one piece. How long should each side of the cake be?

59. Geography (Ms. Sue)

How does a war on terrorism differ from a conventional war against another country? My answer: A war based upon terrorism differs from a conventional war against another country due to the enemy's objectives. For example, some terrorist groups want

60. physical

in a water tank is filled wiyh 1026 lter of water,we want to mixed sodium nirtride by 17% of the water,how much we used sodiume nitride in kilogram in to the water?

61. Algebra

A 12' ladder leans against a wall at 68 degree angle of elevation. Find the distance from the ladder's base to the wall.

62. Geography (Ms. Sue)

Why are the United Sates and its allies so concerned about terrorism?

63. To: Jai

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

64. Stats/math

The deciles of any distribution are the 10th, 20th,...90th percentiles. The first and last deciles are the 10th and 90th percentiles, respectively. What are the first and last deciles of the standard Normal distribution? HOw would i solve this? thank you

65. dma 040

area of a certain state (state1) five times the area of another state(state2). If the sum of their area is 6,000,000 square miles, find area of each state

66. Algebra, easy problem

Find the value of k so that the line containing the points (−4,1) and (k,−2) is perpendicular to the line containing the points (−9,5) and (−5,0).

how to find the call of action, claims,counterargument, rebuttal to the counterargument. like words that will help me find it

68. physics

If an electron travels 0.150 m from an electron gun to a TV screen in 19.0 ns, what voltage was used to accelerate it? (Note that the voltage you obtain here is lower than actually used in TVs to avoid the necessity of relativistic corrections.)

69. chemistry

Gold has a density of 19.3 g/cm3. Do you think you could carry 1.30 cubic ft (rhetorical--don't answer)? How many pounds does 1.30 cubic feet of gold weigh? [453.6 g = 1 lb, 2.54 cm = 1 in, and 1 ft = 12 in.]

70. math

A portrait of George Washington is square and has an area of 169 square centimeters. How long is each side of the portrait?

71. physics lon capa

A car starts from rest and travels for 4.93 s with a uniform acceleration of +1.53 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.99 m/s2. If the brakes are applied for 2.83 s, how fast is the car going at the end of the

72. ENGLISH (ESL)

A nurse was working in ER, during her shift, she see a please need proof reading . patient who is having fever of 101 degree F. The patient also has open wound on his left leg, the wound is red, painful, swollen, and foul-smelling pus is showing signs of

73. prelag8

what is -21/56 in simplest form? do i drop the negative or keep it?

74. Geography (Ms. Sue)

What might be some difficulties facing the United States and its allies in fighting terrorism?

75. algebra b

the length of a rectangular banner is 5 feet longer than the width. If the width is 84 square feet, find the dimensions

76. Chemistry

From a titration of KHP and NaOH. Determine the range in NaOH volume to achieve a relative standard deviation of less than 0.2%. Assume 800mg of KHP was used.

77. physics

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.2 m/s. The car is a distance d away. The bear is 26 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum

78. biology

A person(between 11-17) gets up and goes somewhere after sitting 20 mins in a place then he stops at a place for his work but a blackish region surrounds his face for 5secs and he falls on the ground ?after 10secs he feels that now his brain is ok and he

79. math

Quadrilateral ABCD has a perimeter of 26 and sides of integer lengths. If AB=m and BC=CD=DA=n, then what is the difference between the greatest and least possible values of n? A) 7 B) 6 C) 5 D) 4 E) 3

80. Math quick help

Oh man.... I don't understand how to simplify though... Can u please help me with These questions : 2 * square root 18 5* square root 48 3* square root 54

81. maths

evaluate sqrt(5+2*(sqrt6)) + sqrt(8-2*(sqrt15))

82. math

if 7x=4y, and y/z=7/5 , then x/z=

83. physics

A pair of vertical plane mirrors stands with an angle of β = 56.5 degrees between them. A pencil of light approaches in a direction parallel to one of them, as shown. After the pencil has left the mirrors, in which direction will it be going? (Give your

84. physics

A lightbulb emits light that creates a shadow of a ball on a wall. If the radius of the ball is 12.3 cm, and the radius of the shadow is 29.5 cm, and the ball is 1.27 m away from the wall, how far is the lightbulb away from the wall? (For the present

85. anology

what is bongo

86. Math

Suppose that the service rate to a waiting line system is 10 customers per hour (exponentially distributed). Analyze how the average waiting time is expected to change as the arrival rate varies from two to ten customers per hour (exponentially

87. writing?

describe the world in 10 sentences

88. math ASAP

Find the point of intersection L1: r(t)= (-5 + 3t)i + (1+t)j L2= r(s) = (1+2s)i + (5-6s)j I know they are perpendicular, and the system of equations I think is t= 4/5 s =8/5 so how do I find the point of intersection

89. College Algebra

A couple wants to rent a car for one day while on vacation. Frank's Automotive Rental wants \$29 a day and \$0.17 per mile, while Coups-For--Day wants \$21 a day and \$0.19 per mile . After how many miles wo9uld the price from Coups exceed the price to rent

90. Physics

A ball is thrown upward from the ground with an initial speed of 23.2 m/s; at the same instant, another ball is dropped from a building 20 m high. After how long will the balls be at the same height?

91. PreCal

Solve for x. -3x^2+8=-4

92. ENGLISH

which is correct-1.Caste politics has helped Dalits and OBCs gain better access to decision -making. OR 2.Caste politics has helped Dalits and OBCs to gain better access to decision -making.

When you have 3 separate circles and the radius of each of those circles is 10 do i calculate like this? 2(10)+2(10)+2(10)=60 cm for my diameter

94. Math

miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?

95. physics lon capa

A car starts from rest and travels for 4.93 s with a uniform acceleration of +1.53 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.99 m/s2. If the brakes are applied for 2.83 s, how fast is the car going at the end of the

96. Math

Exponent Form: 1/4^3 Factor Form: 1/4 * 1/4 * 1/4? Standard Form: The answer?

I had to write 20 sentences , 2 sentences for each answer with 10 verbs in the present form and reprise. Please check my answers and help me to correct them, thanks 1. Je chante. Je peux chanter. 2. Tu dessine. Tu peux dessiner. 3. Il danse. Il peut

98. Geography (Ms. Sue)

How has terrorism affected the policies of the United States and its allies?

99. math

In 2000, selected automobiles had an average cost of \$23,000. The average cost of those same automobiles is now \$37,950. What was the rate of increase for these automobiles between the two time periods?

100. alebra

your class is going to see a musical the wizard of oz. the ticket service bills your school \$5.50 per student plus a \$29.95 service fee . represent the cost as a negative number. define a variable for the number of students who go to the musical and use

101. Physics

Find the moment of inertia of the following "L" shape about the x-x axis (I sub x) The base of the L shape is 4 inches long and 2 inches high. The vertical column of the L shape is 8 inches high and 2 inches wide. (So the "block L" is 2 inches wide

102. algebra b

the cumulative number of car accidents from 2000-2010 can be modeled by the quadratic expression, C=-33x^2+792x+8,877, where x=1corresponds to 2000, x=2 corresponds to 2001, and so on untill x=11 corresponds to 2010 a)find the number of cumulative car

103. Capitalism

In a capitalist economy, how can we cure poverty?

104. Math

if the line containing the points (a,3) and (b,2) has a slope of 1/7, then a-b=

105. english

PLEASE HELP bruces viewpoint made long range planning very difficult for him. what word goes in the blank a:subliminal b:perceptive c:myopic D: discerning i know the definitions but its still hard i think its myopic

106. chemisrty

565 g block of aluminum metal is cooled from 243 c to 100 c is what?

107. Math

A two digit number has the property that the units digit is 4 less than the tens digit and the tens digit is twice the units digit. What is the number?

108. Math Homework HELP!

Find the value of k so that the line containing the points (k,−8) and (−3,−5) is parallel to the line containing the points (9,7) and (12,5).

109. Math, HELP!! UGENT!

Find the value of k so that the line containing the points (−8,8) and (2,k) is perpendicular to the line containing the points (14,−8) and (9,−6).

110. dma 040

360 degree Parallelogram, A&D have same measures, B&C have same measures. C is four time the measure of A. What is

111. Chemistry

I was asked this question for homework but I don't even know where to begin. It has 3 parts to answer. 1) add all lone pairs and make multiple bonds with the framework shown to satisfy the octets and make the best Lewis structure. 2) For the C-N bond(s) in

112. Math

Find the value of k so that the line containing the points (k,−8) and (−3,−5) is parallel to the line containing the points (9,7) and (12,5).

113. simple math

If a= 9990.9 and b= 9886.1. First, convert these to scientific notation. If only three significant digits are allowed in decimal portion (mantisa) of the scientific notation and chopping and not rounding is used, what is a-b?

114. Financial management

how do I solve for x in the following equation: 1.2 (\$1,364,994,000 + x) = \$1, 807,626,000 + x

115. Macroeconomics

What is the significance of consumer sovereignty?

116. math

I'm trying to solve these equations but it seems I didn't get the correct one. please help if you still can. to solve the equations: 1. 0.4 =32z 2. 8n - 2 = 14 3. 2 (x + 3) = 4 Thanks a lot.

117. Macroeconomics

What is the household vs. the firm?

118. Math

Simplify the expressions (ab^2c)^-1 / a^8b^2c^-4b^3

119. Stats

2. The population standard deviation for the number of rolls before a 1 is observed. Use this result to construct a 90% Z-interval for the mean number of rolls required before a 1 is observed.

120. Algebra 1

1). 7 = z/4 2). -7 = 9 - 7 3). t/6 = -7 4). 20 = x - 3x 5). 5/6x - 1/3 = 5/2 6). (29.5 - 7)/ 1.25 7). 2/3 = 4j/ 6 My answers to these questions are the following: 1). z = 28 2). q = 0 3). t = -42 4). ? 5). ? 6). ? 7). ?

121. Economic

Who has an unlimited checking account with the US Treasurer that enables them to write all the checks they want without regard to having funds in the bank?

122. Geography (Ms. Sue)

What is the location of Afghanistan in relation to Saudi Arabia?

123. CJS

what are some trends currently affecting policing

124. math

f(x)= 1/x^2-8x-9 g(x)= 1/x^2+3x+2

125. English

What is the absolute definition of a review, and how could I write one about a video?

126. PSY-317

What specifically is the acronym CUPID?

127. PSY-317

How does CUPID help normal Aging?

128. Mathg

Last semester, a certain professor gave 26 As out of 332 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)