1. calculus

By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. If the cardboard is 14 in. long and 6 in. wide, find the dimensions of the box that will yield the maximum

2. physics

A snowmobile is originally at the point with position vector 31.3 m at 95.0° counterclockwise from the x axis, moving with velocity 4.77 m/s at 40.0°. It moves with constant acceleration 1.92 m/s2 at 200°. After 5.00 s have elapsed, find the following.

3. Chemistry

The Ksp of magnesium hydroxide, Mg(OH)2, is 5.61 × 10^-12. Calculate the molar solubility of this compound. Is the answer 1.1*10^-4 M?

4. AP Chemistry

A biochemist prepares a lactic acid-lactate buffer by mixing 225 mL of 0.85M lactic acid with a Ka=1.38*10^-4 with 435mL of 0.68M sodium lactate. What is the buffer pH? I know I have to use the equilibrium constant expression, but I'm pretty lost from

5. Chemistry

A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species? H2(g) + I2(g) 2HI(g) Kc = 129

6. MATHS

the base BC of a triangle ABC is divided at D so that BD=1/3 BC .prove that ar(triangle ABD)=1/2 ar (triangle ADC)

7. Physics

John is pushing a wheelbarrow filled with sand on a building site the total mass of the wheelbarrow and its content is 30kg. When he applies force of 20 the wheel barrow moves forward at constant speed. What is the Magnitude of the friction between the

8. Algebra

width W or a rectangular swimming pool is 7x^2. The area of the pool is 7x^3--42x^2. what expression for the length of the pool? please walk me through this.

9. physics

A basketball player is standing on the floor 10.0 m from the basket as in Figure P4.50. The height of the basket is 3.05 m, and he shoots the ball at a 40.0o angle with the horizontal from a height of 2.00 m. (a) What is the acceleration of the basketball

10. Physics

A spacecraft in orbit around the moon measures its altitude by reflecting a pulsed 10Mz radio signal from the surface. If the spacecraft is 10km high what is the time between the emission of the pulse and the detection of the echo?

11. Algebra

square frame occupies area of 112 ft ^2. what is the length of each side of the picture in simplified radical form?

12. Chemistry

At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.49. What is the Ksp of the salt at 22 °C?

13. maths-trignometry

Prove that tan-1 (1/7) + tan-1 (1/13) = tan-1(2/9)

14. Chemistry

Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a safe and

15. Algebra

use right triangle-find the length of the missing side : b=2.1, c = 2.9

16. math

The diagram shows a sector OAB of a circle, centre O and radius10 cm. Angle AOB is theta radians. The point C lies on OB and iss such that AC is perpendicular to OB. The region R is bounded by the arc AB and by the lines AC and CB. The area of R is 22cm^2

17. Chemistry

You are to prepare a KH2PO4 and Na2HPO4 solution with pH=7.31. What should the concentration of [2(HPO4) 2-] / [H2PO4-]

18. physical science

A 150-L water heater is rated at 8 kW .If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10C to 60C?

19. biochemistry

perform the calculation required for100ml of 0.2 M sodium acetate buffer of pH 5.0. If you are given a bottle of sodium acetate acetate(mw =82 and a bottle of concentrated HCl of normality =11.7). After the calculation, prepare the buffer , check the pH of

20. physics

3- An electric motor can accelerate a Ferris wheel of moment of inertia (I =20 000 kg.m2) from rest to (10.0 rev/min) in (12.0 s). When the motor is turned off, friction causes the wheel to slow down from (10.0 to 8.00 rev/min) in (10.0 s). Determine (a)

21. Geometry

What translation rule can be used to describe the result of the composition of (x, y) (x – 9, y – 2) and (x, y) (x + 1, y – 2)

22. maths-probabilty(urgenlty)

A chairman is biased so that he selects his relatives for a job 3 times as likely as others. If there are 3 posts for a job. Find the probability distribution for selection of persons other than their relatives.

23. Statistics

During September, the average temperature of Laurel Lake is 64.2º and the standard deviation is 3.2º. Assume the variable is normally distributed. For a randomly selected day, find the probability that the temperature will be a. Above 62º b. Below 67º

24. Physics

A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the

25. physics

A solid cylinder of mass 20 kg rotate about its axis of rotation with angular speed 100m/s. The radius of the cylinder is 0.25m. What is the K.E. associated with the rotation of the cylinder what is the magnitude of the angular momentum of the cylinder

26. Office Management

When conducting a performance appraisal, it's important for the supervisor to A. provide only positive feedback no matter what the actual performance has been. B. avoid addressing employee concerns until after the appraisal has been signed by the employer.

27. physics

The engine on a 0.2kg model airplane exerts a forward force on the plane of 10N. If the plane accelerates at 2m/s2, what is the magnitude of the resistive force due to the wind acting on the airplane?

28. statistics

The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are \$45,000, \$50,000, and \$40,000. Find a point estimate of the population mean of the starting

29. Biology-Ecology

Multiple choice: For a natural ecosystem to be self-sustaining, many compounds must be: 1. converted into new forms of energy. 2. cycled between organisms and the environment. 3. permanently removed from the environment. 4. changed into fossil fuels such

Bill brought four times as may apples as harry and three times as may apples as martin. If Bill, and martin purchased less than a total of 190, apples, what is the greatest number of apples that bill could have purchased?

31. Mathematics

The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P

32. math

(6a^4b+ab^3)+(3ab^3-6a^4b)

33. Physics

An object is dropped from rest. What is its instantaneous speed when it has been in motion for 7 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s

34. Math trigonometry

Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.

35. math

Camern is wrapping a present. She does not want any left over wrapping paper. How much wrapping paper does she need to buy. The length of the box is 15in, the width is 3in and the height in 7 in. I did it this way. front and back(height) SA=lw*2 SA=15(7)2

36. Physics 11th grade 'Heat' `

1) While Laurie is boiling water to cook spaghetti, the phone rings, and all 1.5 kg of water boils away during her conversation.If the water was initially at 15℃, how much heat must have been gained for all of it to turn into a water vapor? 2)By January,

37. Chemistry

Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a safe and

38. Elementary Algebra

The manager of a farmer's market has 500lb of grain that costs \$1.20 per pound. How many pounds of meal costing \$.80 per pound should be mixed with the 500lb of grain to produce a mixture that costs \$1.05 per pound?

39. Chemistry

Suppose you have to prepare 1.00 L of the solution ( KH2PO4 and Na2HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2PO4 would you use?

40. Chemistry

How are a mix of pre-1982 and post-1982 pennies a misleading or incorrect analogy for actual element isotopes?

41. Physics

A 500 kg elevator starts from rest. It moves upward for 4.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (a) What is the average power of the elevator motor during this period? (b) How does this power compare with the motor

42. Chemistry

Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by

43. Mathematics

The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P

44. physics 20

Two people, a and b, are pulling on a tree with ropes while person c is cutting the tree down. Person a applies a force of 80.0N (45.0degrees) on one rope. Person b applies a force of 90.0N (345degrees) on the other rope. Calculate the net force on the

45. Physics

A standard man uses a bicycle of mass 30 kg to travel at constant speed along a 5 km long road up a hill. The hill rises 250 m above the starting point and the man needs 30 minutes to get to the top. How much work does the man do during the trip? What was

46. Algebra

simplify each radical expression: 1. sqrt 75 + sqrt3 2. sqrt 7 (sqrt14 + sqrt 3) please walk me through this.

47. science

two waves are traveling through the a container ofnitrogen . the amplitude of the first wave is .3 cm and the amplitude of the second wave is .9 cm. what is true about the two waves? a. the energy of the first wave is less than the second wave. b. the

49. journalism/english

I need help paraphrasing and editing this: any suggestions? Cummings says that it varies whether students come back to the Career Zone or not. She says sometimes they make follow-up appointments with students, or make the suggestion that students return

50. Finite Math

A Specialty shop owner used a revenue function and a cost-volume function to analyze his monthly sales. one month he found that with a sales volume of 1465 items he had revenues of \$32,962.50 and a total cost of \$26,405.50. Another month he had total costs

51. chemistry (Pls Bob check for me)

A 150 mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline 2 ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L= 10dl 1dl =100mL Answer 0.015mg/dl

52. Chem

The mass of a single uranium atom is 4.70E-22 grams. How many uranium atoms would there be in 164 milligrams of uranium?

53. physics

Two identical thin wires are oriented along the x and y axes. With current on x plane going North. Current on y plane going West.Both carry the same current I, and there is no electrical contact between the wires. The points A, B, C, D are each equidistant

54. math

sonya spent three eighth of her money and then had \$15 left. how much money did she originally have

55. English

Which is the better strategy for increasing comprehension? A. Paraphrase what you read. B. Take notes word for word so as not to lose the meaning intended. C. Summarize only chapter by chapter. D. Take notes only when you are unclear of a concept. I think

56. English

How is an autobiography, such as A White House Diary, different from a biography?

57. science

water freezes in the crack in this boulder and expands. over time, pieces of the boulder will break off. what type of weathering effectis this an example of? a. wedging b. hydration c. carbonation d.reduce pressure

58. algebra

10 ft ladder leans against wall its foot braced 3 ft from wall's base. how far up the wall does the ladder reach? please walk me through it

59. algebra

A television screen measures 32 inches diagonally, and its aspect ratio is 4 to 3. Find the width and the height of the screen. (Round your answers to one decimal place.)

60. math

Value of a new car depreciates at a rate of 12% per year. Approximately how many years will it take until the car is worth \$2300?

A busy restaurant determined that between 6:30 P.M. and 9:00 P.M. on Friday nights, the arrivals of customers are Poisson distributed with an average arrival rate of 4.32 per minute. What is the probability that at least 1 minute will elapse between

62. Algebra

triangle-find the length of the missing side? a= 16, b = 63 please walk me through this.

63. Physics

Sewage at a certain pumping station is raised vertically by 5.57 m at the rate of 1 860 000 liters each day. The sewage, of density 1 050 kg/m3, enters and leaves the pump at atmospheric pressure and through pipes of equal diameter. (a) Find the output

64. fractions

Harry spent one third of his money on a hat, 1/6 of his money on socks, and \$12.00 on a tie. How much did Harry spend?

65. Astronomy

Which event is likely to trigger rapid growth in supermassive black hole mass? -A merger of two gas-rich galaxies. -Direct collisions of stellar-mass black holes in collapsing globular clusters. -Tidal disruption of a dwarf elliptical galaxy by a large

66. Math

If I have 15 flavors of ice cream and 81 different toppings, how many different combinations could I create (assuming only 1 flavor of ice cream in the container at a time)? I got 36267774588438900000000000 ??? IS THIS RIGHT???

67. Chemistry - reaction kinetics

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:   Lab Temp 0.2°C   Experiment Trial Time in seconds Trial 1 Trial 2 Average Time   1 1 2 256 275

68. math

I asked this earlier today but did not get help. Can you please let me know if this question is done properly? Thank you Camern is wrapping a present. She does not want any left over wrapping paper. How much wrapping paper does she need to buy. The length

69. math

Value of a new car depreciates at a rate of 12% per year. It is worth \$23 000. Approximately how many years will it take until the car is worth \$2300?

70. South America

an aeroplane flies horizontally at 80m/s in still air if the aviator wishes to fly due south and the wind is blowing from the south-east at 30m/s 1.what course must he steer 2.how long will it take him to arrive at his destination 200km away

71. history

What liberties, if any, were extended to slaves from one region to another?

72. math

Suppose that x is normally distributed with a mean of 10 and a standard deviation of 3. Find P(x ¡Ü 6). Note: Round your answer, if necessary, to two places after the decimal. Please express your answer with two places after the decimal.

73. Math

The heart shaped card is made by placing a square card and two semicircles together. What is the area of the card. each side of the sqare is 8cm long. I did a=TTr(squared)+lw A=TT4squared+8(8) A=TT16+64 A=80TT A+251.3274123 A=251.3 cm(squared) The total

74. Spanish 2

I need help picking the rightsentence form? Thanks ¿Quién te sacó estas fotos? A. Julio me los sacó. B.Julio te las sacó. C.Julio me las sacó. ¿Quién les mandó estas flores a Uds.? A.Ceci nos los mandó. B.Ceci nos las mandó. C.Ceci se las

75. computer

What does tenure track, part time instructor of computer science does? To be computer science where can you do volunteering?

76. Chemistry

0.194M NaOH and 0.268 M NH4CL Find concentration of OH

77. Given the following rational function

Given the following rational function, find a) the horizontal asymptote(s), b) the vertical asymptote(s), if any, and c) the oblique asymptote(s), if any. F(x) = x^2-x-2/2x^2-x-2

78. Physics

In a resonance-tube containing air, the source of sound is a small loudspeaker driven by a variable-frequency oscillator. The distance between successive antinodes is 10 cm for a frequency of 1625 Hz. When the frequency is slowly reduced, the standing wave

79. statistics

Compare the standard deviation for the heights of females 2.533 and males 4.21

80. chemistry (Pls Bob check for me)

A 150mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline. 2ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L = 10dL 1dL = 100mL My own calculation 150mg/dL = 150mg/100ml =1.5 150mg/100ml

81. math

find the next time both buses will leave Central Station at the same time. Show or explain how you found your answer.

82. math

A square pyramid has a slant height of 13 meters and a height of 12 meters. What is the surface area if the square base has sides of length 10 meters? 360 m2 320 m2 260 m2 120 m2

83. math

A score of 243 is a "basic" reading level. Scores for a random sample of 3000 students had a xbar = 250 with a standard error 1.0 The 99% confidence interval for the mean score all students in the city is 247.4 to 252.6. Ques: Is there good evidence that

84. Managerial Finance

A firm has an issue of preferred stock outstanding that has a par value of \$100 and a 4% dividend. If the current market price of the preferred stock is \$50, the yield on the preferred stock is

85. IT

Can someone help me with this? Design an application or site that presents and explains your Implementation Plan. The site must include all sections of the plan and related content and consist of multiple web pages. Demonstrate the following

A shop sells candies by weight. Monisha bought 2 full bags of chocolates and 3 full bags of gummy bears for \$23.50. If 3/4 of a bag of chocolate cost as much as 5/6 of a bag of gummy bears, find the cost of 1 full bag of chocolates.

87. French

For my French homework, I have written a letter of motivation. I would be grateful if you could read it and suggest where I could improve. Monsieur, J’ai objectif de travailler dans le domaine service client. Je voudrais être responsable grands comptes

88. chemistry

0.315 M 2(NH4)SO4 and 0.488 M NH3 Calculate concentration of OH

89. physics

A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 5.85 m/s in 0.712 s. What is the magnitude of the linear impulse experienced by a 70.5 kg passenger in the car during this time?

90. math

if i drive home with a speed of 60km/h,I will arrive an hour ealier than expected.If i drive 40km/h then i will arrive an hour later than expected.At what speed should i travel in order to arrive BANG on time?

91. math

2candles,one green and one red,are lit at the same time.The green candle burns twice as fast as the red one.The green candle burns burns out after 6 hours,how much time will elapse before the red candle burns out ?

92. Physics

A plastic ball fallen 2m onto a hard floor and bounces to a height of 1.8m. Find:- {1}coefficient of restitution of the collision {2}the height of the next ball bounce

93. Physics

A plastic ball fallen 2m onto a hard floor and bounces to a height of 1.8m. Find:- {1}coefficient of restitution of the collision {2}the height of the next ball bounce

94. geometry and combination

On a straight line ℓ, we have an infinite sequence of circles Γn, each with radius 1/2^n, such that Γn is externally tangential to the circles Γn−1,Γn+1 and the line ℓ. Consider another infinite sequence of circles Cn, each with radius rn, such

asked by infinite number of circles
95. Physics

A skier of mass 66 kg skis straight down a 11° slope at constant velocity. Draw a free-body diagram of the skier with the various external forces acting on her. Include the force of air resistance, which is directed opposite the velocity. (Do this on

96. Trignometry

Let θ be the angle between the x-axis and the line connecting the origin O(0,0) and the point P(−3,−4), where 180∘

97. math

A score of 243 is a "basic" reading level. Scores for a random sample of 3000 students had a xbar = 250 with a standard error 1.0 The 99% confidence interval for the mean score all students in the city is 247.4 to 252.6. Ques: Is there good evidence that

98. Maths A

The Bough and Bud Company combined an insect spray with a growth hormone to produce the MOP (More Oranges Production) Treatment, which was expected to increase the number of oranges produced by each tree. The data below shows the number of oranges produced

99. Chemistry

For calculating the concentration of a metal Ion in Equilibrium with a complex ion...how do I get the right hand side of this equation to equal 5.9 E -8? x(0.98 + 2x)2 _____________ = 1.7 E 7 (0.010-x) then, x(0.98)2 ________ = 5.9 E -8 0.010 I understand

100. maths vector

if a vector+ b vector+ c vector =0, & a vector=3, b=5, c=9, find angle between a & b vector

101. Physics

Consider a pair of parallel plates with a potential difference of 12 V and are separated by 12 cm. What is the potential energy of a 1.0 C charge at point A, exactly 30. cm from each plate?

102. Biology-Ecology

Multiple choice What is the ultimate source of energy for most ecosystems, and in what form does the energy leave the ecosystem? 1. plants; animals 2. light; heat 3. plants; heat 4. producers; consumers 5. heat; light

Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=

104. Chemistry - URGENT

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:   Lab Temp 0.2°C   Experiment Trial Time in seconds Trial 1 Trial 2 Average Time   1 1 2 256 275

105. Science

why nh4cl is not used in place of nacl to prepare hcl?

106. math

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.65 times 10^-5 watts/cm^2

107. calculus

I have spilled 200cm^3 of vegetable oil on my kitchen floor. The resulting oil slick can be modeled as a cylinder with a very small height; the height is decreasing at a rate of 1/1000πcm/sec and the radius is currently 50cm. How quickly is the radius of

108. Science

Name the two forms of oxygen element found in atmosphere. Which one among them grievuing depleted?state and explain the reason?

109. algebra

simplify the rational expressions. State any excluded values. 1. 3x-6 2. x - 2 ______ ______ x^2 + 3x--10 x--2 please walk me through this

110. Child Development

Baby eniko grasps her mother's hair, gazes into her eyes, and smiles. These actions bring eniko close contact w/her mother, which comforst her. according to bowlby's theory of attachment, eniko is the ____ phase. a. reciprocal relationship b. clear-cut c.

111. math

12.55=660 660/12=\$1.05

112. Chemistry

Suppose you have to prepare 1.00 L of the solution ( KH2 PO4 and Na2 HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2 PO4 would you use? b) What mass of Na2 HPO4 . 12 H2O would you

113. mathematics

How many ordered pairs of solutions (a,b) are there to a/b−b/a−2/a−2/b=0, where a and b are integers from −100≤a,b≤100?

114. maths-triangle

If all three altitude , median and perpendicular bisector are same , then the triangle is

115. statistics

The highest point in the scatter is the point for Illinois, at 1807. The two just below it, at 1778 and 1777, are for Minnesota and Iowa. The lowest points are at 1391 and 1385, for Maine and D.C. respectively. Pick all the options that are correct. The

116. history

Include a description of how slavery evolved in the various regions of British America.

117. Math

What is the surface area of a cube whose sides measure 5 inches? I did A= s squared A=5 squared 25 inches squared Then SA= 25*6=150 inches squared Is this correct? Thank you

118. Astronomy

Black holes can be completely described by which three parameters? -angular momentum, spin, and electric charge -angular momentum, density, and radius -mass, angular momentum, and electric charge -mass, angular momentum, and radius

After saving 4/5 of his salary every month, Zacky has \$150 left. Micah saves 6/7 of his salary every month. If both guys save an equal amount each month, how much is their combine salary?

120. maths

ABCD is a trapezoid with AB parallel to DC. If AB = 25, BC = 24, CD = 50 and AD = 7, what is the area of ABCD?

121. accounting

Dan and Joan want to buy an airplane. They find one that will cost \$200,000. They must pay 10% down, and can get the balance financed with a 10 year loan at 7% interest and annual payments. What is their annual payment? Answer \$26,826 \$25,626 \$24,457

122. maths

what is the domain of f(x)=3/4_x^2+log(x^3_x)

123. geometry

to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length

124. math

4 digit number 12*6 is a perfect square.the value of the digit represented by * is ?

125. Chemistry

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:  Lab Temp 0.2°C  Experiment Trial Time in seconds Trial 1 Trial 2 Average Time  1 1 2 256 275 268  2

126. math

when you reverse the digits of the number 13,the number increases by 18.how many other 2digit numbers increase by 18 when their digits are reversed ?

127. Maths A

Sue was sailing in the area shown on the chart on 3 March 2013. At 9:00 a.m., she sighted the antenna mast on Wellings Island on a bearing of 180°T. Sue also took a sighting to the lighthouse on Abby Island and found it was at an angle of 098°M. (i) Sue

128. Chemistry

0.25mol of CO are mixed with 0.90mol of H2 and heated to 950 degrees celcius in a 15L flask at equilibrium 0.190mol of H2O were present, what is the concentration of the other reactants and products at equilibrium and what is Kc

129. math

4c(11-c²) distribute the multiplication over the addition

130. Chemistry

Hydrocinnamoyl chloride + AlCl3 --> ??

131. 7 Science Astrology-ish

250 pound person goes to the moon, how much do they weigh there?

132. MATH

CAN U TELL ME MORE ABOUT IDENTITIES

133. maths

can you help with adding the following wave sines 30sinѲ(Ѳ+60o)+50sin(Ѳ-45o)

134. physics

32.6 gram mass is whirled on a cord 131 cm long at a speed of 6 m/s. What is the centripetal acceleration of the mass in MKS units ?

135. Math

Evaluate the following indefinite integrals. Show all steps please A) ∫xe^x^2+10 dx b) ∫(1/2x+x)(ln(x)+x^2)^10 dx

136. MATH

If I pick a number between 1 and 99, what is the probability that someone else in my class (30 students) will pick that same number?

137. English 4

Mcbeth ActII page .373 quesztions and answers

138. accounting

Normal price of mini-scooters are \$120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are \$20,0000 per year to produce these scooters. Variable costs are \$10.00/per mile delivery and \$50.00/scooter for handling

139. accounting

Normal price of mini-scooters are \$120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are \$20,0000 per year to produce these scooters. Variable costs are \$10.00/per mile delivery and \$50.00/scooter for handling

141. maths-differentaition

y=cos^-1[(1-x^2)/(1+x^2)] find dy/dx

142. world history

Any ideas to build a hippodrome for a school project

Do you have the story animal senses

144. maths

How many distinct prime factors does 100100 have?

145. Math Q.

x/2 - (3x+1/3) < 1/4 My answer was x > -0.25 , but im not positive.

146. calculus

Consider the interval I=[6,7.6]. Break I into four subintervals of length 0.4, namely the four subintervals [6,6.4],[6.4,6.8],[6.8,7.2],[7.2,7.6]. Suppose that f(6)=19, f'(6)=0, f'(6.4)=−0.5, f'(6.8)=−0.1, and f'(7.2)=−0.1. What is the approximate

147. algebra URGENT HELP

x+14/x-8 ≥ 1 solve and write solution in interval notation

148. Algebra

The perimeter of a rectangle equals the sum of its lengths of its 4 sides. If the width of a rectangle is 4 inches and its perimeter is 38 inches, find the length of the rectangle.

149. chemisty

3.14M NaN3 (pKb=9.28) is titrated with .663M HClO4 until it reaches the equivalence point. How do you calculate the pOH at the equivalence point. I tried and got something around 9 but its not correct i used a table but without liters given i have not idea

150. algebra

square root of a-square root of b =

151. Math

-3 ( 3n + 3) =15

152. maths-differentaition

y=cos^-1[(1-x^2)/(1+x^2)] find dy/dx

153. maths-functions

one -one function (what are its conditions)

154. French

May someone checck for me please? Vous voules ENGAGEZ contre les INEGALITES LUTTER une cause juste? MENER un combat contre le racisme et pour le RESPECT des differences

155. Mathematic

how many decimetres are there in a kilometre?

156. kivule secondar Mathematic

how many decimetres are there in a kilometre?

157. history

What was the impact of the Stono Rebellion?

158. science

what is the difference between an element and a particle?

159. Math

Find the solution and round to the hundredths. 24 divided by 0.865. I got two answers I'm confused.

160. Astronomy

Mergers of two supermassive black holes will be major sources for observations of gravitational waves in the future. What do gravitational detectors aim to detect? -Tiny shifts of fixed objects due to the rippling of space. -Sound waves carried by cosmic

161. Chemistry AP

It was determined that a 0.10 M solution of an acid was only 2.5% ionkzed. Find the Ka and pKa for the acid.

162. MATHS

HOW MANY QUIDULATERALS ARE THER

find out local government budget including allocation, various sectors, amount and project

164. physics

Can someone explain the term magnitude when it comes to momentum

165. english

give a paragraph by underlineing the verbs

166. physics

An 8.64g bullet is fired into a 365g block that is initially at rest at the edge of a table of h = 1.11 m height The bullet remains in the block, and after the impact the block lands d = 1.87 m from the bottom of the table. Determine the initial speed of

167. Calculas

Given f(x)=x^3−2x+5/x+4 and f′(3)=a/b, where a and b are coprime positive integers, what is the value of a+b? Details and assumptions f′(x) denotes the derivative of f(x).

168. Calculas

Evaluate lim x→0 10x/√(9+x)-√(9-x)