1. Science

What do bone marrow and epidermis have in common. A.they are both sites of new cell information B.they both contain structures that assist the body in cooling down if overheating occurs. C.they both contain or are associated with sensory neorons D.they are

2. Math Help

Math unit test. (1) write the fraction 1/8 as a percent. round to the nearest hundredth of a percent where necessary. 12.50% 37.50%**** 62.50% 80.00%

3. Social Studies

Use the image to answer the question. This image shows a crowd in Boston protesting the return of an enslave person to Virginia. What opinion did members of this crowd most likely share? a) They supported slavery in Virginia b) They believed slavery shoukd

4. Conditional Probability

A certain virus infects one in every 400 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. Let A be the event "the person is infected" and

5. math

leslie decides to join a gym . she must pay a monthly fee plus a one -time fee to open a membership. This situation can be modeled by the expression 55x + 80 . explain how each number and letter in the expression relates to the problem .

6. Algebra

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. 8|13 16|26 24|39 A:yes;y=5x B:yes;y=10x*** C:yes;y=1.625x D:no;y does not vary directly with x

The proceeds of a \$9,500.00, 10 percent simple discounted note for 95 days is?

8. history

2. How did the Supreme Court decision in Dred Scott v. Sandford increase sectionalism? (1 point) It defined the rights of slave and free states. It expanded the geographical size of the nation. It kept the number of slave and free states even. It would

9. Algebra II

The volume of a gas in cubic centimeters, V, varies inversely with the pressure of the gas in liters per square centimeter, p. When the volume of the gas is 16 cm3, its pressure is 20 L/cm2. Find the volume of the gas when the pressure is 2.2 L/cm2.

10. math

The scatterplot shows the number of minutes spent reading (x) and the number of pages read (y) by each of seven students last night. Use the labeled points to create a linear model that predicts the number of pages that a typical student reads in x

11. Physics- Car moving with speed of 22 m/s...

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? a. 36 m b. 72 m c. 140 m d. 219 m

12. Math

In a study of 800 men,diastolic blood pressure was found to be approximately normally distributed, with a mean of 84 millimeters (mm) of mercury and standard deviation of 10 millimeters. Use the 68-95-99.7% rule to determine what percentage of the test

13. Social Studies

Graph URL: h t t p : / / b i t . l y / 2 h p N N F 6 Which of the following best explains the difference between Tennessee and Mississippi on this graph? a) Mississippi had more battles because it was on the coast. b) Mississippi had fewer battles because

14. Physics

Problem: A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's. Part A: Calculate the magnitude of the force on a 71-kg person accelerating at this rate. Answer=> F= 2.09x10^4 N Part B: What distance

15. Math 1

In a study of 500 men, diastolic blood pressure was found to be approximately normally distributed, with a mean of 82 millimeters (mm) of mercury and standard deviation of 10 millimeters. Use the 68-95-99.7% rule to determine what percentage of the test

16. Maths

It takes for three gardeners 90 minutes to weed a garden. If the job is to be done in only 15 minutes, how many more gardeners need to be put on the jobs?

Find the digit that makes _1,258 divisible by 9? List all the factors of the number 30? Find the prime factorization of the number 168?

18. chemistry

PLEASEEEE HELP Write the balanced equation for the reaction between zinc and acetic acid. The equation has been written you just have to balance. ___Zn + ___HC2H3O2 → ___Zn(CH3COO)2 + ___H2

19. social studies

"we have come after these long thousands of years to experience the agony of ten years for foreign oppression with every loss to the right to live, every restriction of the freedom thought..." 10.which of these judgments would the Koreans most likely make

20. algebra 2

Danielle needs to walk 2.5 miles. If she wants to reach her destination in 30 minutes ( hour), how fast does she need to walk?

21. Physics

A cardboard box of unknown mass is sliding upon a mythical frictionless surface. The box has a velocity of 4.56 m/s when it encounters a bit of friction. After sliding 0.700m, the box has a velocity of 3.33 m/s. What is the coefficient of friction of the

22. Calc

The graph of f ′(x) is continuous and increasing with an x-intercept at x = 0. Which of the following statements is false? The graph of f is always concave up. The graph of f has an inflection point at x = 0. The graph of f has a relative minimum at x =

23. Math

A coyote can run up to 43 miles per hour while a rabbit can run up to 35 miles per hour. Write two equivalent expressions and then find how many more miles a coyote can run in six hours than a rabbit at these rates

24. Health

1. In a soccer game, the coach of the home team realizes her players are not as highly skilled as the other team and she wishes to avoid a high scoring game which she believes her team will not win. How can she apply coaching tactics to give her team the

25. algebra 2

An object's height varies directly with the length of its shadow. A person who is 5 feet tall casts an 8-foot shadow. How long is the shadow of a 20-foot tree?

26. ST KYLINS

I have 9 digits. My ten millions digit is a 0 and is 8 less than my hundreds digit. My hundred millions digit is 1 less than my thousands digit, 8 more than my millions digit, twice my ten thousands digit, and 4 times my hundred thousand digit. My digits

27. Math

Compatible numbers to find two estimates that the quotient is between 2,593÷6

28. Pre geometry

The cross country bike trail follows a straight line where it crossess 350th and 360th streets. The twonstreets are parallell to each other. What is the measure of the larger angle formed at the intersection of the bike trail and 360th street. explain only

29. physics

A brick is dropped (zero initial speed) from the roof of a building. The brick strikes the ground in 3.05 s. You may ignore air resistance, so the brick is in free fall. (a) How tall, in meters, is the building? (b) What is the magnitude of the brick's

30. Math

in the figure given below, area of parallelogram ABCD is 29 square centimeters.calculate the height of parallelogram ABEF if AB=5.8.

31. Algebra

A conic section has the equation x2 + y2 + 10x + 8y = 40. Determine the following: type of conic, domain and range, axes of symmetry, and center. Show your work.

32. MATH 2

It is found that the number of raisins in a box of a popular cereal is normally distributed, with a mean of 133 raisins per box and a standard deviation of 10 raisins. My cereal box has 147 raisins. What is the z-score for this box of cereal?

34. Math

PLEASE CHACK MY ANSWER!!! Discussion for Applications of Linear Systems When solving a system of equations, how do you determine which method to use? My answer: I determine which method to use by looking at the equations. If both equations are in

35. Math

Emily has 5u game cards. John has 8/3 fewer cards than Emily. Find the average number of game cards that Emily and John have in all in terms of u.

36. physics hw

Determine the stopping distances for a car with an initial speed of 87 km/h and human reaction time of 2.0 s for the following accelerations. (a) a = -4.0 m/s2 (b) a = -8.0 m/s2

37. Social Studies

How do labor unions affect the economy? They decrease demand by opposing low prices. They increase supply by keeping workers healthy*** They decrease supply by increasing worker wages They increase demand by ensuring ethical production

38. Sis plz help one question thx asap

What examples are given of a limited government and an unlimited government in the section? How did each type of government affect its citizens

39. history

scientific invention that revolutionised food preservation during the 19th century

40. English

1. I want some friends to play soccer with. 2. I want some friends that I can play soccer with. 3. I want some friends that I will play soccer with. 4. I want some friends that I want to play soccer with. ------------------------------ Does #1 mean #2,3,

41. Algebra

The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function

42. AP Chemistry!!!

If 5.6 g of aluminum at 65.2 °C is placed in a calorimeter that contains water at 23.5 °C and the temperature of the water after the heat exchange occurs is 24.7 °C, then identify how much water is in the calorimeter. I know this has something to do

43. Physics- Energy Released In Chemical Reaction

The reaction between two hydrogen isotopes is shown below: 2H + 3H → 4He + n + energy released The energy released in this reaction is: a.equal to that in a fission reaction b.equal to that in a chemical reaction. c.less than that in a chemical reaction.

3.) The demand equation for a certain product is q=500-40p+p^2 here p is the price per unit (in dollars) and q is the quantity of units demanded (in thousands). Find the point elasticity of demand when p = 15. If this price of 15 is increased by 1/2%, what

45. Physics

A model rocket has a mass of 0.435 kg. It is mounted vertically and launches directly up with a thrust force of 13.1 N. a) What is the weight of the rocket? b) Determine the net force on the rocket as it is launched. c) What is the acceleration of the

46. math

Emily has 5u game cards. John has 8/13 fewer game cards than Emily. Find the average number of game cards that Emily and John have in all in terms of u.

Mr. Lynch bought some oranges and pears.after giving away 10 oranges, he had twice as many pears as oranges left.if he had 24 pears in the end,what was the ratio of the number of oranges to the number of pears he had at first?

48. ms.sue

who is ms.sue? i've seen her a lot on the answers and she's EVERYWHERE!! is there only 1 ms.sue?

49. Maths

find the points of intersection of (a) the tangents to the graph of y=2+2x-x^2 at the points where the graph meets the x-axis. (b) the normals to the graph at these points. (c) find the area of the triangle created from the two intersections and the point

50. Plz check

1. Blood type in humans is controlled by ____ alleles with an additional Rh factor that determines _________ . one; color two; positive or negative charge three; shape of blood cells four; phenotype 2. If two people are heterozygous for cystic fibrosis,

51. science

If your rock sample has 10 grams, how many grams of quartz does it contain

52. Math algebra

The radioactive decay of a substance is expressed by A=A^0 e^ -kt, where the initial amount A^0, decays to an amount A after t years. The positive constant k differs for each substance. Strontium 90 decays such that k=.028. Find out how much of 1,000 mg of

53. Social Studies

What did Frederick Douglass believe that prevented Americans from living up to the Constitution? a) manifest destiny b) abolition c) popular sovereignty (my answer) d) slavery

54. MATH

Freddy paid w dollars for a camera and \$120 for an additional camera lens. If the sales tax is 8%, how much did Freddy pay for the camera and lens, including the sales tax?

55. Agents Of SHIELD

I have to write an essay and for my topic I chose the show Marvel's Agents of SHIELD. Anyways, all I need to know is, was Daisy's birthday and what episode did she find out her real name? I know they told her but I don't remember what it was. Sorry if this

56. physics

An ore car of mass 41000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 29 m lower vertically, is a horizontally situated spring with constant 4.1 × 105 N/m. The acceleration of gravity is 9.8 m/s2 . Ignore

57. Chemistry

What is the likely identity of a substance (see Table 10-1) if a sample has a mass of 16.0 g when measured in air and an apparent mass of 15.2 g when submerged in water? Which of the following is it? -copper -gold -lead -aluminum -iron or steal -concrete

58. Math

I'm really confused on how to do this, Can someone help walk me through? An object is placed in front of a concave mirror as shown in the diagram below. A. Draw at least two rays that demonstrate how this mirror produces an image. (4 points) Image B.

59. maths calculas part

A man who has 144m of fencing material wishes to enclose a rectangular garden.Find the maximum area he encloses

60. Chemistry

A gas is collected by water displacement at 25 degrees celsius.(the vapor pressure of water at that temperature is 24mmhg.if the atmospheric pressure is 800mmhg.what is pressure of the dry ice

61. Calculus

Determine the open intervals on which the graph of f(x) = -7x^2 + 8x + 1 is concave downward or concave upward. The second derivative is just -14, so I don't know what to do with that.

62. English

1. I would rather die than surrender. 2. I would rather fail than cheat. 3. I would rather play games than study. 4. I would rather walk to work than go to work by car. ------------------------------- Are they all grammatical? Do we have to use the base

63. Math

A movie theater charges \$11 for each adult and \$6 for each ticket. one day, they sold 163 tickets and made \$1578. How many of each ticket did they sell?

64. math

Find the coordinates of the image of the point p(4,6)under the reflection about the line x=3 followed by the reflection about the line y=x.

65. PHYSICS HELP

A pilot wants to fly a plane east at a velocity of 400.0 km/hr with respect to the ground. A 50.0 km/hr wind is blowing southward. With respect to the air, what velocity must the pilot maintain?

Compute the probability that a person who tests positive actually has the disease. A certain disease has an incidence rate of 0.3%. If the false negative rate is 4% and the false positive rate is 1%, compute the probability that a person who tests positive

67. uchs

Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet as shown in the following diagram.

I'm really confused on how to do this, Can someone help walk me through? An object is placed in front of a concave mirror as shown in the diagram below. A. Draw at least two rays that demonstrate how this mirror produces an image. (4 points) Image B.

69. algebra 1

The base of a triangle is 3 cm greater than the height. The area is 27 cm squared. Find the height and base of the triangle.

70. Maths

The average of three numbers is twice the fourth.if the average of these four numbers is 28,find the fourth number?

71. Geometry

A circle with center O has a radius of 4 feet. Points A and B are placed on the circle so that . Find the length of the intercepted . Use 3.14 for , and round your answer to the nearest tenth. A. 1.1 feet B. 1.2 feet C. 1.4 feet D. 2.1 feet

72. science

i just some science questions but there not for school. 1. five volcanic eruptions and what are the locations of these eruptions. Did they occur in the middle of a plate or near a plate boundary? What were the effects of these eruptions on the surrounding

73. Algebra

The length of a shadow of a building is 27 meters. The distance from the top of the building to the tip of the shadow is 38 meters. what is the height of the building?

74. Maths

Find the equation, Centre, vertices, co-vertices, foci, equations of assymptotes and eccentricity of the hyperbola traced by the points that moves so that the differences of its distance from (-4,4) and (-4,6) is 6.

75. English

1. He said, "Where do you live?" 2. He asked where I lived. 3. He asked where we lived. 4. He asked where he lived. 4. He asked where she lived. 5. He asked where they lived. ----------------------------- Does #1 usually mean #2? What about the others? In

76. p[hysics

A soccer ball was kicked off a cliff that was h = 8.4 m above the ground. The ball was kicked at a speed of 25 m s-1 and an angle of 20 to the horizon. What is magnitude of the horizontal displacement of the ball? Use g = 9.8 m s-2.

77. Math

Ms Rowe needs to make a box to hold 729 cm^3. She needs the box to have a lid. What are the dimensions of the box that would minimise the surface area?

78. Need guidance on how to solve Michaelis Menten

The question is below. If someone could at least give me an idea of where to start, or some steps of how I should go about solving this problem, I would be so extremely grateful. Thank you! You isolate an enzyme from teddy bear liver. The enzyme catalyzes

79. Science

How much energy is needed to convert 10kg of ice at -15 degrees centigrade to 125 degrees centigrade of steam? Express your answer in joules.

80. English

1. Can you finish the work by next Monday? 2. Can you finish the work till next Monday? (Is #2 incorrect?) 3. Can you wait for me till/untill seven p.m.? 4. Can you wait for me by seven p.m.? (Is #4 incorrect?)

81. Engish

1. She must have been rich. 2. She cannot have been rich. 3. You should/ought to have come earlier. 4. He may have found the glasses. 5. He might have found the glasses. (They are all grammatical and talk about the past, right? By the way, what is the

82. Maths

The diagonals of a rhombus are in the ratio 3:4. If its perimeter is 40 cm, find the lengths of the sides and diagonals of the rhombus

83. English

1. I had rather starve to death than steal. 2. I would rather starve to death than steal. 3. I had rather starve to death. 4. I would rather starve to death. 5. I had better starve to death than steal. 6. I had better starve to death.

84. Homework

A poll was taken of 10,439 working adults aged 40-70 to determine their level of education. The participants were classified by sex and by level of education. The results are shown below. Education Level Male Female Total High School or Less 2023 3264 5287

85. math algebriac expressions

If 6 tablespoons are equivalent to 1 fluid ounce, how many fluid ounces are in (10t-4) tablespoons?

86. PHYSICS HELP!!!!!

A soccer ball was kicked off a cliff that was h = 8.4 m above the ground. The ball was kicked at a speed of 25 m s-1 and an angle of 20 to the horizon. What is magnitude of the horizontal displacement of the ball? Use g = 9.8 m s-2. proper equation and

87. PHYSICS

Charlie now moved onto the next hole where he hit the ball with an initial speed of 30 m s-1 and at an angle of 60 degrees. This time the ball lands with a speed of 17.3 m s-1. Use g = 9.8 m s-2.

88. Gaussian Elimination Method

Write the system of equations as an augmented matrix. Then solve for x and y. -3x-y=11 -9x-2y=34 Solution =

89. Math

the half-life of iodine-131 is 8 days. how much iodine-131 will be left After 35 grams sample after 32 days?

90. algebra

Please evaluate the expression and show the answer in scientific notation. (4.2*10^2)(4.2*10^5) Thank you

91. Math

Bob is twice as old as chuck, and susie is 10 years younger than bob. If the sum of their age is 100 years, how old is susie?

92. Sets

Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many elements are contained in set A?

93. HELP SCIENCE

Luis created a clay model of earth and the sun to show how earth rotates, Luis wants to use a toothpick to represent earths axis of rotation Where should he put the toothpick A - horizontally through earth in the direction earth is traveling B - vertically

94. Chemistry

A cube of solid reactant with sides of 1.00 cm² is submerged in a liquid and reacts to form a gas product at an initial rate of 20 mL/s. The solid-liquid interface is 6.0cm² of surface area. If you sliced this cube (like a block of cheese) into 10

95. physics

A. how long will it take for a 55.0 kg steel brick to fall 75 meters on earth. A. how far from the base will a 55.o kg steel brick to land,(horizontally) if it dropped a vertical distance of 75 meters on earth, and what is its velocity just before it hits

96. Maths science his french

Critical angle of a material to air is 30 degree then the refractive index of material will be

97. physics

A car starts from rest and travels for 5.0 s with a uniform acceleration of +2.5 m/s2. The driver then applies the brakes, causing a uniform negative acceleration of -3.0 m/s2. If the brakes are applied for 2.0 s, how fast is the car going at the end of

98. precalculus

Is my answer correct? Which of the following shows the correct first step to prove the following by mathematical induction? 3 + 11 + 19 + 27 + … + (8n - 5) = n(4n - 1) ________________________________________ 3 + 11 + 19 + 27 + … + (8 • 1 - 5) = 1(4

99. physics

A train travelling at 30km/h stops when it's brakes are applied. The train suffers a deceleration our 2m/s. @. How long does the train take to come to rest? b) what is its final velocity?

The number of tim's stamps is 3/4 the number of david's stamps.if tim gives 1/2 of his stamps to david,what will be the ratio of the number of tim's stamps to the number of david's stamps?

101. precalculus

Can you check my answers? 1.Which of the following shows the best next step to prove the following by mathematical induction? 3^n>n*2^n, n≥1 1.When n=1, the formula is valid because 3^1 1*2^1 3>2 2.Assuming that 3^k>k*2^k a.3^k+1>k+1*2^k+1

102. algebra

Please show me how to simplify these expressions:1) (-x)^2(-x)^5 2) (-3m^3)^2 3) (x/y)^-3 Thanks very much for your consideration.

103. Physics

1.7 m long pendulum is setup from a 3 m ceiling so that it is at its peak (h=.65 m), it is then released. At the bottom of the swing the string is cut (assume no engery loss during the cutting process) 1.) what is vertical velocity right before it hits the

104. Gauss-Jordan elimination

Write the system of equations as an augmented matrix. Then solve for x and y. -3x+3y=-21 3x+2y=-4

105. bio

what is a trophic level how does the amount of energy change as you go from one trophic level to another

106. precalculus

Can you check my answers? 1.Which of the following shows the best next step to prove the following by mathematical induction? 3^n>n*2^n, n≥1 1.When n=1, the formula is valid because 3^1 1*2^1 3>2 2.Assuming that 3^k>k*2^k a.3^k+1>k+1*2^k+1

107. precalculus

can you check my answer? 2.Which of the following shows the best next step to prove the following by mathematical induction? n!>2^n, n≥4 1. When n=1 the formula is valid because 4!>2^4 24>16 2.Assuming that k!>2^k show that (k+1)!>2^k+1 (k+1)!=k!(k+1)

108. physics

a circular wheel rotate 200 nos. of revolution in 30 seconds. find its angular velocity

109. Math

(Round to the nearest 10) The average person eats 60 hots dogs. Rota is 86 years old. How many hot dogs would she have eaten in her life time

110. precalculus

Is my answer correct? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) ________________________________________ 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1)

111. Calculus

Given that f(x)=x^3+ax^2+bx has critical points at x=1 and x=5, find a and b and classify the critical points as maxima, minima, or neither.

112. math

given tat F(x)=x^3+ax^2+bx has critical points at x=1 and x=5 find a and b and classify the critical points as max, min, or neither.

113. Maths

Find the equation, Centre, vertices, co-vertices, foci, equations of assymptotes and eccentricity of the hyperbola traced by the points that moves so that the differences of its distance from (-4,4) and (-4,6) is 6.

114. math

The smallest of three consecutive integers is added to twice the largest, the result so obtained is fifteen less than four times the middle integer. Find the integer s.

115. algebra

Please show the following numbers in standard form. 6.548*10^-3 5.854*10^1 2.25*10^6 Thank you for your help.

The ratio of the number of boys to the number of girls in a school choir is 4:3.there are 6 more boys than girls.if another 2 girls join the choir, what will be the new ratio of the number of boys to the number of girls in the school choir?

117. Social Studies

1. What was the landscape of the country prior to Imperialism? 2. What kind of resources made the country a commodity to the colonizers? 2. Who lived there? What was their daily life like? 4. What kind of leadership and hierarchy did the civilization

118. Zee school , math subject.

From a rectangular sheet of tin,of size 100cm by 80cm,are cut four squares of side 10cm from each corner.Find the area of the remaining sheet.

119. PHYSICS

Terry hit his 26 g golf ball so that it has an initial velocity of 33 m s-1 travelling at an angle of 26 to the horizon. If the ball lands at the same height it was struck, how far will it travel? Use g = 9.8 m s-2.

120. Math

Jason earns &10.59 per hour. He works 5.75 hours Saturday how much money does he earn Saturday? I know the answer is \$60.89 but there's two answer so I don't know if you round 60.89

121. math

please help me im really confused i keep changing my answer and i have no clue what the answer is write a rule for the function represented by the table input (x) 0, 1, 2, 3, 4, output (y) 3, 6, 9, 12, 15,

122. precalculus

Can you check my answer? Which of the following shows the best next step to prove the following by mathematical induction? 1+4+7+10 + + (3n-2)=n/2(3n-1) 1.When n=1, the formula is valid because (3*1-2)=1/2(3*1-1) (3-2)=1/2(3-1) 1=1/2(2) 1=1 A. You must

123. Algebra

Can you please help with this question: The cheerleaders are having a bake sale to raise funds for new uniforms. The group sell cupcakes for \$3 each and make a profit of \$840 from the sales. If X represents the number of cupcakes the cheerleaders sold and

124. Algebra

Can you please advise if I worked this problem correctly: 11 + x = -15y 2x - 5y = 48 15y = 11+x y = .73 + 15x 2x (.73 + 15X) - 48 2x -3.65 -75x = 48 -73x - 3.65 = 48 x = 51.65 x = -.70

example teacher has on sheet is: 400 = 10 x h 40 =10 x 4 400 = 10 x 40 So, h = 40 so how does my grandson do this problem the same way? 280 = 2 x m This grandma has no idea. Thanks for you help.

126. Health

At the mall, John and three of his friends are waiting for the movie to start. One of his friends has an older brother who says he can get them all into the movie for free if they go around to the back of the building and come in through the employee

127. explore career

If john got paid \$12.00 an hour and he worked 40 hours, how much is his gross pay?

128. English

1. He said to me, "You will fail in the exam." -direct narration- 2. He told me that I should fail in the exam. -indirect narration- 3. He told me that I would fail in the exam. -indirect narration- --------------------------------- #1 can be changed into

129. calc

Determine the values of a and b to make the following function continuous at every value of x.? f(x)= { e^(x^2-x+a) if x < 1 , (4^x-x^2)) if 1

130. science

i just some science questions but there not for school. 1. five volcanic eruptions and what are the locations of these eruptions. Did they occur in the middle of a plate or near a plate boundary? What were the effects of these eruptions on the surrounding

131. algebra

Please evaluate this expression with the answer in scientific notation. (2.5*10^-2)^4 I certainly would appreciate help.Thank you.

132. English

1. If I had a lot of money, I could buy a car. 2. If I could buy a house, I would be happy. 3. If I were a rich person, I could buy a smart phone. 3-2. If I " was" a rich person, I could buy a smart phone. -------------------------------- Are they all

133. physics

What is the angle between A and B vectors for which A+B=A-B ?

134. Math

Two fractions with different denominators have a sum of 11/12 what are two possible addends that result in the sum?

135. MATH :(

In one version of equations i cant get... Its really messing me up!

136. history

What are the comparisons between herodotus and thucydides

137. history

What are the uses of history

4×5 1/8

11x+55=

140. precalculus

Is my answer correct, I am confused by this question? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. 1 2 3 5 answer: 2

141. calculus

A rectangle has an area of A. Find the dimensions that minimize the perimeter. Show that it really is a minimum.

142. History

I need to make an "Apples to Apples" Project and I really don't know what to write. It's about the Revolutionary war. I have one green card with a title and three red cards and I have to choose three events that are related to it. I also have to explain

143. English

1. I said to her, "Will you close the door?" -direct narration- 2. I told her that she would close the door. -indirect narration- 3. I asked/begged her to close the door? -indirect narration- --------------------------------- #1 can be changed into #3.

144. Math

A bag is full of marbles. 10 blue, 11 red, 3 green, 16 yellow. What percentage of marbles are yellow

145. Math

Simplify 4 (n-6)

146. math

A restaurant has tables that can seat either 4 or 7 persons. there are 12 four seaters and 8 seven seater tables. a) what is the largest number of persons that can be seated if all the four seater tables only are occupied? b) 83 persons are to be seated

147. algebra

Am I allowed to post 3 related questions? I'll try. Please write these scientific notation answers in standard form showing complete work. 1.764*10^8 3.90625*10^-7 3.0*10^3 Thank you.

148. physics

A soccer ball was kicked off a cliff that was h = 8.4 m above the ground. The ball was kicked at a speed of 25 m s-1 and an angle of 20 to the horizon. What is magnitude of the horizontal displacement of the ball? Use g = 9.8 m s-2.

149. math

46 + 2d = 10 + 5d How would i do this problem step by step. I need these notes for the future

150. Physics

A football is kicked at ground level with a speed of 17.7 m/s at an angle of 39.8 ∘ to the horizontal. How much later does it hit the ground? Answer=> t=_____ s Express your answer using three significant figures and include the appropriate units.

151. physics

Charlie now moved onto the next hole where he hit the ball with an initial speed of 30 m s-1 and at an angle of 60 degrees. This time the ball lands with a speed of 17.3 m s-1. Use g = 9.8 m s-2.

152. English

How do you do MLA In-Text Citations?

153. physics

A soccer ball was kicked off a cliff that was h = 8.4 m above the ground. The ball was kicked at a speed of 25 m s-1 and an angle of 20 to the horizon. What is magnitude of the horizontal displacement of the ball? Use g = 9.8 m s-2. proper equation and

154. math

sharon's onions cost \$2.75/200g and Arnold's Onions cost \$3.00/1/4kg a) Which of the vendors is selling onions more expensive/ b) How much would 1kg of onions cost?

155. math

Fariza gave .3 of her flowers to her sister, 4/7 of the remainder to her brother. Fariza remained with 45 flowers. a) Calculate the percentage of flowers Fariza kept for herself. b) How many flowers Fariza had at the begining? c) Calculate how many more

156. History

How do economic opportunities lead to social impact? Can you give an example? Maybe education or...? Thank you!

157. calc

Find the tangent line to the curve (x^2/16)-(y^2/9)=1 at the point (4sqrt2,3)

158. algerbra

an object is projected upward at a rate of 96 feet per second. find the time when it is 144 feet above the ground

159. Algebra

Please help me with this problem: A basketball team scored 50 times in their previous game. The team earned points from making two-point field goals (baskets) and one point free throws. If the team scored 87 points in their last game,how many two-point

160. Measurement/math

A wheel rotates 35 times going 100 feet. How big around is the wheel? I don't know where to start....

161. math

the temperature dropped 14 degrees in 3.5 hours

162. augmented matrix

Write the system of equations as an augmented matrix. Then solve for x and y. 3x+y=-11 -9x-3y=33

163. Physics-Uncertainty Principle

On the subatomic level, the uncertainty principle creates situations in which ___________ does not apply.

164. Calc

Find the set of points that the following function is continuous at them. f(x)= { √(5-x) -2 if x < 1 , (2x-1 + In(x)) / (x-25) if x>1, -1/24 if x=0

165. Math

My son has the numbers 1-12. In a square all sides must add up to 25. Each number can only be used once apart from the corners as they will be used twice to form the square pleaseee hellpppp

166. algebra

I still need help! Please show a complete evaluation with the answer in scientific notation. 9.6*10^2/3.2*10^5 Thanks very much.