1. Educational tech-1 question

Use the text below written by Connections Education in 2012 to answer the following questions. The Second Industrial Revolution was not just marked by new inventions. New business practices were invented that transformed America’s economy. Between

what sis franklin roosevelt do to reduce the effects of the depression the day after he became president? a. he closed the stock market to prevent further losses b. he signed a bill to provide money to industries so they could reopen and put people back to

3. Math

1. Add or subtract. (4x^2 + 15x -3) - (-3x^2 + 5) A. 7x^2 + 15x - 8 B. x^2 + 12x + 2 C. x^2 + 15x - 8 D. 7x^2 + 8 2. Simplify the polynomial. -3f^2 + 4f - 3 + 8f^2 + 7f + 1 A. 5x^2 - 4x - 2 B. -5x^2 + 8x - 2 C. 5x^2 - 8x + 2 D. -9x^2 - 8x + 2 3. Add or

Explain how you know 6/6 and 1 are equivalent?

5. math

Jamal writes the letters K-A-N-S-A-S on cards and then places the cards in a hat. What are the odds against picking an S?

6. maths - HCF

The product of HCF and LCM of two numbers is 119. Find the two numbers if one of the numbers is not 1. Please help me to solve this.

1. What happens to the levels of surface water and groundwater during a drought? Surface water and groundwater levels increase during drought. Surface water and groundwater levels decrease during drought. There is no change in the levels of surface water

8. Physict

This question is similar to some on driver's-license exams: A car moving at 50 km/h skids 15 m with locked brakes. Show that with locked brakes at 150 km/h the car will skid 135 m.

Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). c. P(z -1.5) d. P(z -2.5)

10. physics

A 4.0-m-long steel wire has a cross-sectional area of 0.050cm2. Its proportional limit has a value of 0.0016 times its Young's modulus. Its breaking stress has a value of 0.0065 times its Young's modulus. The wire is fastened at its upper end and hangs

11. HELP!!! SCIENCE!!!

What are three key accomplishments of Marie and/or Pierre Curie?

12. science

A wave has a wavelength of 10mm and a frequency of 5 hertz what is the speed Answer Are 55 mm/s 50 hertz 2 mm/s thank you

13. Geometry

#19. Given a regular octagon, find the measures of the angles formed by (a) two consecutive radii and (b) a radius and a side of the polygon.

14. math

Name the position of the first digit of the quotient. 1. 832/4 2. 217/7 I don't understand. Someone please explain to me.

15. English

Which of the following sentences uses CORRECT punctuation? A.) Sharks are considered dangerous predators, however, a deep-sea diver says sharks can be playful creatures, too. B.) Sharks are considered dangerous predators; however, a deep-sea diver says

16. physics

A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 7.1 rad/s about an axis that is perpendicular to the left end of

17. math

Which of the following decimals is equivalent to three and ten hundredths? a)0.30 b)0.31 c)3.01 d)3.1 My answer is (d.)

18. Math

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(complement of 4) A. 1/6* B. 5/6 C. 2/6 D. 4/6

19. college algebra

The height of a projectile fired upward is given by the formula s = v0t – 16t2, where s is the height, v0 is the initial velocity and t is the time. Find the times at which a projectile with an initial velocity of 128 ft/s will be 144 ft above the

20. math

If Sue worked 6 3/4 hours on Monday, 4 hours on Tuesday, 7 3/4 hours on Wednesday, 8 hours on Thursday, and 5 1/2 hours on Friday, calculate her weekly wage at \$7.20 per hour.

21. Physics multiple choice questions

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy -->

22. ap biology

What barriers might hinder the acquisition of plasmids?

23. Math

A 3500-seat theater sells tickets for \$75 and \$110. Each night the theater's expenses total \$245,000. When all 3500 seats sell, the owners want ticket revenues to cover expenses plus earn a profit of 25% of expenses. How many tickets of each price should

24. Geography

Identify three perceptual factors that affect Egypt regionalization

25. Math

Write the expression using a single exponent. 2^2 * 2^8 A. 4^10 B. 2^10 C. 4^16 D. 2^16 Write the expression using scientific notation. (2.5 * 10^4)(4 * 10^3 A. 10 * 10^7 B. 10 * 10^8 C. 1 * 10^8 D. 10 * 10^12

26. Math (help)

what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help.

27. math multiple choice

. A man pays 60 cents for every 200m3 of gas used, plus a fixed charge of \$13.75.How much does he pay when he uses 55 000m3 gas?

ANNE: I’m trying. Really I am. Every night I think back over all of the things I did that day that were wrong . . . like putting the wet mop in Mr. Dussel’s bed . . . and this thing now with Mother. I say to myself, that was wrong. I make up my mind,

29. B.A,H,S ENGLISH

traditional healers should be allowed to practise and prescribe medicine in hospitals and clinics

30. PROGRAMMING

design a program for the following. Registration workers at a conference for authors of children's book have collected data about conference participants, including the number of book each author has written and the target age of their readers. The

31. math

The balance sheet is used to project future cash receipts t or f

32. math

We use the normal distribution to make estimates about a population.t or f

33. math

Frank owns 300 acres of land. If he divides the land into 1/2 acre plots, how many plots will he have?

34. math

Activity Boys Girls Total Walk 3 6 Bike 5 3 skateboard 2 1 3. What percentage of the total students chose skateboarding? (1 point) 10% 20% 30% none of these *** 4. What percentage of the boys chose walking? (1 point) 30% **** 45% 25% none of these 5. What

35. grammar - conjanction

Choose the following words to combine these sentence. words: after and till because as but for if when since so though unless until while or 1) The children went home. It was getting dark. 2) The boys were allowed to read books. The teacher was absent. 3)

36. chemistry

I want to make sure I am correct in classifying whether the following properties of hydrogen are chemical or physical. thanks 1. hydrogen will burN in in oxygen to form water. CHEMICAL 2. hydrogen does not support combustion. CHEMICAL 3.hydrogen is usually

37. Finance

The projected revenues and costs that form the basis of the potential for a project's acceptance or rejection are estimates of ______________. A. Future activity B. Past activity C. Known activity D. Current activity

38. Science

Please Check my Work:pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) 1. solid (My Choice) 2. liquid 3. gas 4. molecule 2. Why is a gas able to flow? (1 point) 1. Its particles have melted and can move around. 2. Its

39. math

The product of square of a number and the cube of the same number is equal to 32 what is that number

40. math

Brendan got 31 questions correct on his social studies test and missed 9 questions. What percent did he have correct?

41. Geometry

Find the area. A rectangle with sides of lengths 4/5 foot and 1/2 foot

42. Math

what happens to the surface area of a rectangular prism when each of the dimensions is doubled? 1. it doubles 2. it quadruples 3. it is six times greater 4. it is halved (I picked 2. Quadruples)

43. Math

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(number

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.

45. college alg.

The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height, v0 is the initial velocity, and t is the time. Find the time for a projectile to return to Earth if it has an initial velocity of 184 ft/s.

46. alg.

A fountain shoots water from a nozzle at its base. The height h, in feet, of the water above the ground t seconds after it leaves the nozzle is given by the function h(t) = –16t2 + 17t + 8. What is the maximum height of the water? Round to the nearest

is this a good intro paragraph use what you learned from reading "The Cask of Amontillado" to write an essay that provides an analysis of how the author creates the effect of surprise. William Shakespeare asked, “If you prick us do we not bleed? If you

48. math

How many centimeters is a piece of paper that measures 12 inches?

49. math

Frank owns 250 acres of land. If he divides the land into 1/3 acre plots, how many plots will he have?

50. Science

In a(n) ___, the particles form a regular, repeating pattern. Answerlist: viscous liquid melting liquid amorphous solid or crystalline solid

51. Physics

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater

52. chemistry

To what volume should you dilute 60mL of a 12.0M H2SO4 solution to obtain a 1.85M H2SO4 solution?

53. Physics

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.

54. English 10

Which of the following should be done last when summarizing a source? • translate • evaluate • analyze • synthesize

55. math

Sandra needs 2 3/4 cups of flour for one kind of cookie and 3 3/8 cups for another kind. How much would she need for both kinds?

56. maths Pls help trig

1 .If tanA=1/3 and tanB=1/7 (both A and B are acute),calculate 50sin(2A +B) 2.1Prove that sin2A+2cosA-2cos^3A/1+sinA =sin2A 2.2 for which values of A in the interval[-360;360] is the identity in 2.1 undefined? 3.If tanB=3/4 , 0

57. chemistry

Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops

58. chemistry

Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops

59. Math

A number cube with numbers 1 through 6 is rolled. Find the given probability. P(number¡Ý3) A. 4/6 B. 1/6 C. 2/6 D. 5/6*

60. statistics

Find the test statistic, P-value, and critical value. Round to 3 decimal places. Claim: The mean IQ score of statistics professors is greater than 118. Sample data: n = 50, x = 120. Assume that σ = 15 and the significance level is α = .05 test statistic

61. College algebra

One day a store sold 31 sweatshirts. White ones cost \$11.95 and yellow ones cost \$12.50. In all, \$379.80 worth of sweatshirts were sold. How many of each color were sold?

62. science

a 1.0 kg metal head of a geology hammer strikes a solid rock with a speed of 3.9 m/s. assuming all the energy was retained by the hammer head, how much will its temperature increase?

63. chemistry

why should you use a minimum amount of water to rinse the conical vial while transferring the purified acetaminophen to the Hirsch funnel?

64. Physics

1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s

On Friday and Saturday, 618 people attended a car show. If the same number of people went each day,how many people attended the car show on Saturday? My answer is 1,236. Is my answer correct? If not please show me how to work this problem.

Please help me by checking the following answers for me(There are 3 problems that I need someone to check). 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work

67. Math

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of calcium? Round to the nearest tenth.

68. social studies

Which of the following statements about mayan and modern cultures is true

Please help me by checking the following answers for me. 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6)=12, I square both sides, so

70. english

1. An essay-type exam is an example of a(n): 2. A discussion board in an online course can be another form of: 3. Explain, discuss, analyze, state, and evaluate are examples of __________ words in an essay-type exam

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater

72. mathematics

The number of buds on the plant doubles every week for six weeks if there are two buds on the plant at the end of the first week calculate the number of buds that there will be at the end of six weeks

73. college alg

The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height, v0 is the initial velocity, and t is the time. Find the time for a projectile to return to Earth if it has an initial velocity of 184 ft/s.

74. Physics

A 3.9 g mass is released from rest at C which has a height of 0.9 m above the base of a loop-the-loop and a radius of 0.4 m. The acceleration of gravity is 9.8 m/s^2. Find the normal force pressing on the track at A, where A is at the same level as the

75. PreCalculus

State the Vertical Asymptote, Horizontal Asymptote, domain, range, x intercept and y intercept for the following Function. y= (5-x)/(x+3) I already know that the Vertical asymptote is -3, so that means the domain is everything except -3, but how do I find

76. Chemistry

What is the ionic strength, I, of a solution at 25C containing 0.002 mol/L of BaSO4 and 0.001 mol/L of BaCl2? What is the activity coefficient of Ba2+ in this solution?

77. Physics

A block of mass 2.48 kg is kept at rest as it compresses a horizontal massless spring (k= 113 N/m) by 4.65 cm. As the block is released, it travels 0.462 m on a rough horizontal surface before stopping. The acceleration of gravity is 9.8 m/s^2. Calculate

78. Math (help)

how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the

80. Physics

A cart loaded with bricks has a total mass of 22.3 kg and is pulled at constant speed by a rope. The rope is inclined at 27.3◦degrees above the horizontal and the cart moves 9.3 m on a horizontal surface. The coefficient of kinetic friction between

81. Math

Anita says the plus sign + forms 2 pairs of vertical angles. Charles says it forms 2 pairs of congruent angles. Who is correct? Explain.

82. Culture and Diversity

Introduction: As the cultural landscape changes, it is important to increase our awareness and understanding of a variety of cultures to appreciate why communication can be a challenge. For this task, you will choose a setting, a committee, or an

83. Mass Transfer

Solution of methanol and ethanol are substantially ideal. (a) Compute the vapour-liquid equilibria for this system at 1 and at 5 atm abs pressure, and plot xy and txy diagrams at each pressure (b) For each pressure compute relative volatilities , and

84. Pre-Algebra

Jenny buys an 18'sandwich. Demi gets 1/2 the amount the Jenny gets. Joel gets 3/4 the amount Jenny gets. How much does Jenny get? Please explain.

85. MathS triG

1 .If tanA=1/3 and tanB=1/7 (both A and B are acute),calculate 50sin(2A +B) 2.1Prove that sin2A+2cosA-2cos^3A/1+sinA =sin2A 2.2 for which values of A in the interval[-360;360] is the identity in 2.1 undefined? 3.If tanB=3/4 , 0

86. Biology

Compare and contrast two classes of genes involved in regulating the cell cycle

87. Chemistry

What is the pH of a solution of NaOH 10^-12 M?

88. Physics

A 3 kg block collides with a massless spring of spring constant 90 N/m attached to a wall. The speed of the block was observed to be 1.5 m/s at the moment of collision. The acceleration of gravity is 9.8 m/s^2. How far does the spring compress if the

89. Physic II

Describe a situation in which you expect the initial cooling rate of a given object to be rapid and one in which the initial cooling rate might be slow. Note: the initial cooling rate is the change in temp. per second at first

90. math

Two angles are complementary. One contains 30° more than the other. Find both angles

91. science

22. Given that humans thermoregulate, explain why your skin is cooler than your body core.

92. Chemistry

Can someone please help me here? It's review for my test. Thanks! Calculate the expected pH of the buffer prepared in Part I of this lab. The Ka of acetic acid is 1.8 x 10-5 Calculate the expected pH when 10.0mL of 0.10M HCl is added to the buffer from

93. NAU

When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 80.6-kg man just before contact with the ground has a speed of 6.59 m/s. (a)

94. Physics

2. Boxcar A, with mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg, and is initially at rest. The box cars collide inelastically and move together after they get stuck. What is their combined velocity?

95. Electricity

Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?

96. Algebra

Area = 15x^3 + 25x^2 what is the length and width of the rectangle?

97. Computers

Need help creating pseudocode for the following. Registration workers at a conference for authors of children's books have collected data about conference participants, including the number of books each author has written and the target age of their

98. Math

To win a certain board game, a tossed token must land on a shaded square on the board. The probability of winning is approximately 23%. If the board has a total area of 130 congruent squares, how many of these squares are shaded?

99. Science

Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?

100. science

Compare and contrast gametogenesis in human males and females.

101. math

What % of \$3.75 is \$1.50?

102. pre calculus

determine whether the equation defines y as a function of x. √x + y = 12

103. trig

cscx+1/cscx cosx = secx+tanx

104. Chemistry

From the solubility product constants for CaF2 (fluorite) and CaSO4 (anhydrite) determine the equilibrium constant for the reaction CaF2 + SO4 2- --> CaSO4 + 2F-

105. Math

How does 26.666 equal 26.2? Could you show me a model of how to do this? Thank You

4x^2=80x-400

107. Math

If the circumference of a circle is 18 ( pie symbol), what is the area of the circle? Thanks

108. Chemistry

How many moles are in 1.50 x 1023 molecules NH3? A. 2.49 x 10 -1 mol NH3 B. 2.49 x 101 mol NH3 C. 2.65 x 10 -1 mol NH3 D. 2.78 x 10 1 mol NH3

Collina’s Italian Café in Houston, Texas, advertises that carryout orders take about 25 minutes (Collina’s website, February 27, 2008). Assume that the time required for a carryout order to be ready for customer pickup has an exponential distribution

110. physics

A force of 120.0 N is applied to 2.00 cm diameter piston in a closed container of water with a density of 1,000 kg/m2. What is the force on another piston with diameter of 25.0 cm connected to the container?

111. Micro economics

Consider a firm with the following production function: q = (ak+bl)^(1/2) The firm's total costs can be written as C = F + rk + wl 1. Calculate the firm's contingent factor demand. Illustrate it in a graph including the firm's isoquant map 2. Assume that

112. math

if a 30 ft ladder makes a 65 degree angle with the ground, how many fee up the wall will it reach

113. Science

What energy change occurs during condensation?

114. Math

8 people are going to sit on 6 chairs. Two of them John and Kelly can't sit next to each other. How many ways can you put the people to seats? The answer is 10080, but I can't figure out how to calculate it.

4m^2-24m+36=0

116. Chemistry

I am not sure if I understand how to balance this correctly. I need to write a balanced equation for the decomposition of solid copper(ii) sulfate to form gaseous sulfur trioxide and solid copper (ii) oxide. 2CuSO7 = CuSO4 + SO3 + CuO

117. Algebra

Maria's average speed for a 6 hour trip was 40kph. For the first 4 hours, she drove at an average rate of 50kph. What was her average speed for the last 2 hours?

Consider the implicit function ln(xy)-cos^-1(x-1)=x a. Find dy/dx. b. Find y when x = 1. c. Find the equation of the tangent line in slope-intercept form when x = 1. Show steps please! Thanks!

119. Calculus

What are two conditions that must be met before the Extreme Value Theorem may be applied?

120. math

Write an equation for the realartionship. Tell what the variables represent. It takes Li 1 hour to drive 65 miles, 2 hours to dirve 130 miles, and 3 hours to drive 195 miles.

121. Language Arts ~CHECK MY ANSWERS~

1.) Resilient people usually a. complain when they have bad luck. b. bring good luck to others. c. are able to deal with setbacks. • My Answer: (B- brings good luck to others.) 2.) When the speaker refers to pausing to “enjoy the view / of the trees

122. Social Studies

Please help me by checking the following answer to the question. Which of the following was part of the Great Compromise reached at the Constitutional Convention? A. Every state would have two seats in the Senate. B. Some slaves would be included in the

123. science

Describe DNA replication in prokaryotes. Include the major steps for origins of replication, unwinding DNA, and synthesis of new strands. Include at least 1 simplified diagram.

124. Math

A bank lent \$1.2 million for the development of three new products, with one loan each at 6%, 7%, and 8%. The amount lent at 8% was equal to the sum of the amounts lent at the other two rates, and the bank's annual income from the loans was \$88,000. How

125. Math

In the expression -7x - 5x^2 + 5, what is the coefficient of x? A. 7 B. 5 C. -5 D. -7

126. science

Given that humans thermoregulate, explain why your skin is cooler than your body core.

127. Algebra

What are the coordinates of the x-intercepts of the graph of y = 2x2 + 6x – 20? • (–5, 0), (2, 0) • (5, 0), (–2, 0) • (–4, 0), (10, 0) • (4, 0), (–10, 0)

128. college alg.

An event in the Summer Olympics is 10-meter springboard diving. In this event, the height s, in meters, of a diver above the water t seconds after jumping is given by s(t) = –4.9t2 + 7.1t + 10. What is the maximum height that the diver will be above the

129. Social Studies

This office evaluates the federal budget. A.) IRS B.) OMB C.) CBO D.) NSC answer: C.)CBO I question if the answer could be B.)OMB. Thank You.

If a rock is propelled upward from the surface of Mars at a velocity of 93 m/sec, it reaches a height s = 93t – 1.86t^2 after t sec. a. Find the rock’s velocity and acceleration at time t. v'(t)=93-3.72t a''(t)=-3.73 b. How long does it take the rock

131. math

Brendan got 32 questions correct on his social studies test and missed 8 questions. What % did he have correct?

132. Calculus

What is the end-behavior asymptote for f(x)=(x^2+4x-5)/(x-2) ? There is an oblique asymptote at y=x+6 and a vertical asymptote at x=2. Is one of those the end-behavior asymptote?

133. health

________ a synthetic opiate that blocks the effects of heroin and eliminates withdrawal symptoms, has a proven record of success for people addicted to heroin

134. chemistry

is 3M less or more concentrated than 9M of sulfuric acid? I think that 9M is more concentrated but I wanted to make sure. thanks

135. Physics

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the

136. chemistry

how many milliliters of .400M hydrogen Monobromide solution can be made from 50mL of 8M hydrogen monobromide solution?

137. physics

How to calculate the maximum vertical component of the force in rope BC when the force in rope is 400N

138. Shakespeare:Julius C.

What side of Cassius' character is seen for he first time? " So oft as that shall be, So often shall the knot of us be called “The men that gave their country liberty.”

139. grammar

please help me if this is correct in grammar. please correct so that i will know the correct grammar. 1.Anyone have done this experience before.

140. Chemistry

Consider a groundwater saturated with respect to PbSO4 (Ksp= 1.7*10^-8) mixing with a groundwater saturated with respect to CaSO4 (Ksp=10^-5). Assume a 50:50 mixture between the waters such as 500mL of each water mixing to form a 1.0L solution a. What is

141. physics

A technician needs to determine the amount of energy required to increase the temp. of a vat containing 12 kg of water. The water enters the vat from the water mains at a temp. of 15 deg C. The technician knows that the final temp. required is 90 deg C.

142. chemistry

If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.

143. English

To protect the environment, what do you have to do? 1. I'd better use less water. 2. I'd better take the stairs instead of the elevator. 3. I'd better ride my bike to school. 4. I'd better use less electricity. 5. I'd better not use paper cups or plates.

144. BIOLOGY

how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve

145. algebra

How do you add π -3/2?

146. Biology

If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.

If a rock is propelled upward from the surface of Mars at a velocity of 93 m/sec, it reaches a height s = 93t – 1.86t^2 after t sec. a. Find the rock’s velocity and acceleration at time t. v'(t)=93-3.72t a''(t)=-3.73 b. How long does it take the rock

148. Literacy

I'm doing a project about the Holocaust and we have a special person that was in the Holocaust that we have to research. Her name is Hetty d’Ancona. Can you help me find some facts about her?

149. Biology

how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve

150. math

For its fleet of trucks, Overland Transport, Inc., purchased 580 tires rated at 50 pounds each. The tires had a retail price of \$85 each. The sales tax in 4.5%, and the federal excise tax is \$0.15 per pound. A. What are the amount of sales tax per tire and

151. What is a biology lab practical?

Is it a test on paper or can I look at notes and answer questions? Do I have to dissect something, have the TA ask me a question and answer instead of dissecting as a group? I've just been quizzing myself on parts of the animal in case we can't use notes,

152. maths

Px^2-(2p+q)x+(p+q)=0 solve by completing of square method

153. Social Studies

Has the effort of Westerners to aid the rest of the world done more good than harm? Its a opinon but i would like a answer please. Please make your answer at least 6 sentences. Thank you very much

154. health

Skeletal muscles have an abundant supply of ________.

155. chemistry

If during an experiment, only potassium channels open on a neuron, what do you expect will happen to the membrane potential? Why?

156. Gr 10 math - finding vertices

I know how to do the equation for one line in a shape, but how do I find them for two?

Prepare a one-page description of your plans to solve the problem for one of the following research studies. Use the following headings for the problem:

158. Chemistry lab

I mixed 10 mL of 9mM KI with 5 mL of 0.9mM in a flask, and then added it to a beaker that contained 10 mL of 45 mM KBrO3, and 10 mL of 90mM HCl. This reaction took 61.60 seconds to complete. I think I need to find the change in concentration, but don't

159. science

Describe DNA replication in prokaryotes. Include the major steps for origins of replication, unwinding DNA, and synthesis of new strands. Include at least 1 simplified diagram.

160. math

50 in.2 to cm2

161. Physic II

If a small amount of a substances that is at 50 deg C is placed in a large insulated room,what will the final temp. of the substances be? will heat transfer to the room take place? will the room temp. go up?

x^2+8x+16=25

163. math

For its fleet of trucks, Overland Transport, Inc., purchased 580 tires rated at 50 pounds each. The tires had a retail price of \$85 each. The sales tax in 4.5%, and the federal excise tax is \$0.15 per pound. A. What are the amount of sales tax per tire and

164. PHYSICS HELP

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 8.2cm from the solenoid's axis

If x^3 - y^3 =3 , use only implicit diff. to find d^2y/dx^2 . Express your answer in terms of x and y only and write is as a proper fraction that is completely simplified as much as possible.

166. Math

In how many words can you form the word ALGEBRA?

Consider the function f(x)= x −1≤ x< 0 f(x)=tan(x) 0≤ x ≤ π/4 a. Draw a neat sketch of this function. b. Is f(x) continuous at x = 0? (Justify your answer.) c. Is f(x) differentiable at x = 0? (Justify your answer.) show steps! Thanks!

168. science

discuss organism adaptations to the environment using clear and specific examples.

169. precal

Hi I know is is probably basic but can anyone assist with the following : Find all real Roots, expressing as whole # and # under radical sign, not as fraction. and factor completely f(x)= X^3-2x^2-15x+30 I got roots at 2 (x-2) and +/- √5 If someone

170. physics

A golfer can generate a peak angular velocity of 3.89 rev/s. If the distance from the club head to it's axis of rotation is 0.96 meters, calculate the peak linear velocity with which he can hit the ball in meters per second.

171. Physic II

List at least four or five variables that the rate of cooling of an object in a large room might depend on?

172. Language Arts ~CHECK MY ANSWERS~

Are these answer are correct? Please be 100% correct / honest. Directions: For questions 7–15, rewrite each sentence, adding commas where needed. 7) While I was researching skateboards, I found an interesting old newspaper. 8) In the June 29, 1999

173. science

Using your knowledge of physiology, genes and evolution, discuss organism adaptations to the environment using clear and specific examples.

174. chem090

100.0 g of Potassium Phosphate reacts with 100.0 g of Barium Chloride. Which molecule is completely used up by the reaction? How many grams of the other molecule are left over?

175. grammar - tense

I will at the airport. I will be a the airport. which statement is correct for simple future. Please explain the fact behind it.

176. math

36 is what percent of 143?

177. Precalculus /Algebra

Hi I know is is probably basic but can anyone assist with the following : Find all real Roots, expressing as whole # and # under radical sign, not as fraction. and factor completely f(x)= X^3-2x^2-15x+30 I got roots at 2 (x-2) and +/- √5 If someone

178. ovarian and uterine cycles

There are two I could not find. Are those that I have so far correct? 1. Name the hormone that triggers development of a primary follicle. I had no idea. . . 2. The corpus luteum releases progesterone in the luteal phase. 3. Oestrogen and progesterone are

179. Math

Can someone show me a model of what 8 divided by 0.3 would look like? Thanks

Find dy/dx for the following: a. y = x^π b. y = π^x c. y = x^x d. y = π^π e. xy = π

181. Subtracting Fractions with like Denominators

If Lori's neighbor gave her sixths eighths cup of milk, would she then have enough milk to make her 2 pancakes?

182. Maths

If you change 6 m to centimeters what multiplication problem will you solve

183. Education

Explain what four general modes of instruction are and what these mean for teaching. What is effective instruction, and do you agree with this model?

184. Ela

I need help ! I have to fill in the sentence with words that make sense As happy as ____ (4 examples)

185. Math

The teachers in a childcare center are taking their children for a field trip.if each bus takes 40 children, there will be 16 vacant seats. If each bus takes 36 children, 20 children will not get any seats. How many buses are there?

187. Social Studies

Hi can you please give me 2 famous Americans that were alive in 1820- 1860? 1 person who supported slavery and 1 person who was against slavery. I don't really want a link or anything just 2 names of 2 people who had different views on slavery... Thanks!

188. Math

Is 2/3 greater than 3/4

189. algebra

can someone show line by line step by step factor x^2-15

190. Math

7/12, 3/4, and 2/3 in order which one is the smallest to the greatest?

191. English

1. He tattoos a rose once a month. 2. He woos the girl every weekend. (Are both grammatical? Do you use 'woos' frequently in daily conversation?)

Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d.What is the probability of 130 or more successes (to 4 decimals)?

193. math

Mrs. Grace has 10 sandwiches that are 4 inches in diameter. They can fit exactly into a different box... Need to show work in box, help, can't seem to figure this out

Find the equation in slope intercept form of the tangent line and the normal line to the curve x^2+4xy+y^2=13 at the point.(2,1). show steps please!!! thank you!

195. Math

Pay can buy a package of 20 balloons for \$6 or a package of 50 for \$9. How much cheaper is each balloon in the package of 50 balloons?

196. Math

Please help me with the following by checking my answer. The length of the hypotenuse of an isosceles right triangle is √6 inches. How long, in inches, are the legs of the triangle? A. 3 B. 6 C. √3 - (This is my answer.) D. √6 I am not sure on my