# Angelica

Popular questions and responses by Angelica
1. ## Precalculus

Suppose a pendulum is meters long. The time, , in seconds that it takes to swing back and forth once is given by t=2.01 square root L . If a pendulum is 10.24 meters long, how long does it take to swing back and forth once? Round your answer to the nearest

2. ## math

The product of two numbers is 88.The sum of two numbers is 26. What are the numbers?

3. ## College Algebra

Jim wants to build a rectangular parking lot along a busy street but only has 2,700 feet of fencing available. If no fencing is required along the​ street, find the maximum area of the parking lot. I got the answer 911.25 which was incorrect I'm not sure

4. ## geometry

A man who is 6 feet tall is standing under a streetlight and casts a shadow on the sidewalk the man is standing 15 feet away from the 20-foot streetlight. How long is his shadow ,s ?

5. ## punctuation and grammar

My garden is full of water,because of yesterday's rain. Is this correct?

6. ## Math

Water is draining from a large tank. After t min, there are 150000-7500t+t^2 litres of water in the tank.? a) Determine the average rate at which the water empties from the tank in the interval between 5 and 10 minutes. b) Determine the average rate at

7. ## math

a jar contains 26 fluid ounces of spaguetti sauce. How many cups of spaguetti sauce do 4 jars contain?

8. ## Chemistry --really need help!

I am really struggling with these problems!! A reaction mixture that consisted of 0.20 mol N2 and 0.20 mol H2 was introduced into a 25.0 L reactor and heated. At equilibrium, 5.0% of the nitrogen gas has reacted. What is the value of the equilibrium

9. ## Chemistry

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

10. ## Technical writing

Either Chris or the new employee ________ the mail before Dolores or Charles ________.

11. ## Trigonometry

An observer (0) spots a plane flying at a 55 degree angle to his horizontal line of sight.If the plane is flying at an altitude of 21,000 ft., what is the distance (x) from the plane (P) to the observer (0)

12. ## chemistry

N2(g) + 3H2(g) → 2NH3(g)+ 22,000 cal equals how much ΔH

13. ## Statistics

A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and finds that the number

14. ## economics

why was the federal reserve established ?

I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)

I don't understand how you do these 2 problems. (p-7)(p+8) & (-7+p)(8+p)

(-7+p)(8+p) I don't understand this at all.

(p-7)(p+8)

19. ## Science

What is a cell wall or cell membrane?

20. ## math

The price of 4 citrons and 5 fragrant wood apples is 46 units. The price of 5 citrons and 4 fragrant wood apples is 53 units. Find the price of a citron and the price of a wood apple.

21. ## Physics

Physics Question DYNAMICS: THE BRICKLAYER’S TALE Answer it based on a letter. Dear Sir: I am writing in response to your request for additional information in Block #3 of the accident reporting form. I put “Poor Planning” as the cause of my accident.

22. ## Chemistry

Which THE PH VALUE OF A solution 0,01 mol/l a monoacido that presents ka= 1×10-6

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I don't know how to find the derivative, i Keep getting it wrong. But I know where

24. ## math

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I got this question wrong. I thought the answer would be y=-4x-6 I followed the

25. ## math

Henry is attending a rodeo in Union County. The nearest airport is in Vindale, which is 33 miles away. On a map, the rodeo grounds and the airport are separated by 3 inches. What scale does the map use?

26. ## Physics

A 24g ball of clay traveling east at 3.3m/s collides with a 33g ball of clay traveling north at 2.4m/s . 1a)What is the movement direction of the resulting 57g blob of clay? 1b)What is the speed of the resulting 57g blob of clay?

27. ## College Algebra

I am using Hawkes Learning System (8.7 Nonlinear Systems of Equations)and my problem is x^2+y^2=13 and y+7=x^2. The answers I came up with are 2 square root of 3 and 3 for my x's. And I received (5,-4) as the y-coordinates. Is this correct?

28. ## Chemistry

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

Danielle has 18 marbles. All the marbles are either black or gold. There are 4 more gold marbles than black. How many black marbles are there.

Why do you think King George III refused to consider the colonist' Declaration of Rights?

31. ## math

The sun causes a flagpole to cast a shadow that measures 85 ft. from the base of the pole. At the same time of the day, a 6.5 ft. tall basketball player casts a shadow that measures 9.75 ft. Determine the height of the flagpole. Express your answer to the

32. ## math

The sun causes a flagpole to cast a shadow that measures 85 ft. from the base of the pole. At the same time of the day, a 6.5 ft. tall basketball player casts a shadow that measures 9.75 ft. What is the scale factor relating the height of the ball player

33. ## Math

10 years to 1 century

34. ## Math

Ratio of 1 decades to 2 years

36. ## Math

What is the ratio of 3 feet to 1 yard should be simplify

37. ## Math

What is the ratio of 18 hours to 5 days should be simplify

38. ## Math

What is the ratio of 18 hours to 5days

39. ## Math

Ratio of 6 hours to 16minutes

40. ## Math

Ratio of 6hiurs to 16 minutes

41. ## Math

What is the ratio of 4 feet to 50 centimeter

42. ## Math

What is the ratio of 18hours to 5days should be simplify

43. ## Math

Ratio of 18hrs. To 5days

44. ## Science

Compare the costs and benefits of operating a laptop computer using its battery versus using an electrical outlet. Include at least one social impact, one environmental impact, and one economic impact.

45. ## Math

A 500mL of bottled water costs 10 pesos. In 100mL its cost is 2 pesos. How much is the cost of 100mL of tap water if your bill is 924 pesos in 42 cubic meter or 42,000,000 milliliters

46. ## kapitolyo

How much force will give a mass of 50g an acceleration of 60cm/s^2

47. ## Maths Perecntages

A fruit shop owner buys a box of 24 mangoes are \$9. At what price should he sell each mango if he wishes to make a 30% profit?

48. ## Math

The mass of the boulder is 48,567 kilograms.what is the mass of the boulder in metric tons?

49. ## Ethics and Communication

Hi, I'm in need of a topic to research having to do with an ethical dilemma within an organization. I got to relate it to ethical principles of communication from Immanuael Kant for example. The topic of choice should be a recent event or issue in the

50. ## college algebra

Use the associative law of addition to write an equivalent expression for (x+2)+y

51. ## Chemistry

1. A sample of oxalic acid (H2C2O4, with two acidic protons), of volume 46.56 mL was titrated to the stoichiometric point with 17.06 mL of 0.297 M NaOH(aq). What is the molarity of the oxalic acid? Answer in units of M. 2. What mass of the oxalic acid was

How is a creating a virtual ecosystem different from the real world?

53. ## math

What is the area of the two-dimensional cross section that is parallel to the base of the cylinder, rounded to the hundredths place? Use. 3.14 for the value of pi. The radius is 5.2 m

54. ## SS

China's cities are growing rapidly due to A. a high percentage of arable land B. people moving there to look for work C. rural areas becoming too crowded D. the one-child policy I think it is B

55. ## math

find the three consecutive even integers such that three times the first equals the sum of the other two

56. ## solid mensuration

Pyramid with a rectangular base 6 cm and 8 cm, lateral face makes an angle of 30 degrees with the base. What is the altitude of the pyramid?

57. ## math

Explain how you know if a number can be divided by 10 evenly

58. ## math

For what intervals is g(x) = 1/x2 + 1 concave down? (Enter your answer using interval notation.) For this question I understand that we have to find where the second derivative is negative. So first I found the first derivative and got 2x/x^4+2x^2+1 and

59. ## Math

I know that I have to apply the product or quotient rules for these problems but I'm not sure why I'm getting them wrong. Please help me! Find the derivative: 1) f(x) = x^6/108 times (6 ln(x) − 1) I got: 6x^5 times 6 ln(x)-1 + x^6/108 times 6/x 2) f(x) =

60. ## statistics

Pharmaceutical companies advertise for the birth control pill an annual efficacy of 98.6% in preventing pregnancy. However, under typical use the real efficacy is only about 95%. That is, 5% of women taking the pill for a year will experience an unplanned

61. ## math

Ronnie was 6 times as old as jhon 6 years ago. Four years from now ronnie will be 4 times as old as jhon. How old is jhon now?

62. ## Science

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an

63. ## Science

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an

64. ## grammar

We just moved from Atlanta, Georgia, to 2716 Hickory Blvd., Austin, Texas. Is this sentence correct? I think it's not. I think the answer should be: We just moved from Atlanta, Georgia to 2716 Hickory Blvd. Austin, Texas. I don't think commas are needed

65. ## honors chemistry

if you obtain 10 moles of water sugar sodium chloride copper and Styrofoam will each sample have the same number of particles?

66. ## honors chemistry

I'm having trouble with this question in my molar mass lab. if you obtain 10 grams of water, sugar, sodium chloride, copper, and Styrofoam will each sample have the same number of particles?

67. ## grammar

Hello, and good afternoon. My question deals with subject verb agreements. I understand time periods and amounts are singular verbs. Here are my samples: 'Three weeks is a lot of time to do a project,' and 'One half of the children like cupcakes.' I know

68. ## physics

A roller coaster car with a mass of 130 kg travels through a loop with a diameter of 20meters. What is the minimum speed at the top of the loop so that the car stays on the tracks? m= 130kg r= 10m v= ?

69. ## English

The sentence is 'What we forgot to mention was that we will be moving in the spring.' I found a clause, it's a noun clause. It's 'that we will be moving in the spring.' I think it's being used as a direct object. We is the subject. Forgot is the verb. What

70. ## English

The is the sentence I'm uncertain about: These old journals are wonderful to learn what life was like a century ago. I know the infinitive is 'to learn.' I think it is being used as an adverb. It's modifying the adjective 'wonderful.' It's not a noun used

71. ## Economics

How to get annual interest cost?

72. ## English

Hermit crabs rely on a supply of empty mollusk shells that they inhabit. What is the function of the relative pronoun in the clause 'That they inhabit'? A. Possessive B. Object of a preposition C. Direct object D. Subject I think it is either direct object

73. ## math

Mike fills his car's tank up with 20 gallons of regular gas at \$2.09 per gallon. His car averages 25 miles per gallon. How many miles can Mike drive on a full tank of gas?

74. ## Physics

Find the average velocity (in m/s) of an object that starts 200 meters north of town and is 1200 meters north of town after 200 seconds.

75. ## Pre cal

1.Find the domain of the function algebraically y=3x-1/(x+3)(x-1) y=(1/x)+5/(x-3) 2.Find the range of the function y=10-x^2 y=(3+x^2)/(4-x^2) Please help me understand how to do them.

76. ## math

= ( 1 + 3) * ( 6 - 4 / 2)

78. ## Chem

For a particular reaction H = -32 kJ and S = -98 J/K. a.At what temp will the reaction be at equilibrium? b.If the temperature is increased from the equilibrium temperature what will happen?

79. ## Math

(4k+5)(k+1)=0

80. ## Chemistry

How many grams of NaCl are present in a 300 grams salt solution containing 9% NaCl ?

81. ## algebra

Beatriz is creating graphs for her city’s Parks Department. Beatriz is trying to persuade the Parks Department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to

82. ## physics

The amount of energy needed to power a 0.10-kW bulb for one minute would be just sufficient to lift a 1.0-kg object through a vertical distance of

83. ## Calculus

Find constants a and b in the function f(x)=axe^(bx)such that f(1/7)=1 and the function has a local maximum at x=1/7. a = b =

84. ## Science

The rms(root-mean-square) value of a periodic signal s(t) is defined to be rms [s]=(1/T Ss^2t dt)^1/2 where T is defined to be the signal's period: the smallest positive number such that s(t)=s(t+T). What is the rms value of the sinusoid s(t)=Asin(2πf0t)?

85. ## Science

What is the period of the sinusoid s(t)=Asin(2πf0t)

86. ## social studies

why did the gap between the rich and poor weaken the shang

87. ## Math

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?

88. ## Math

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?

89. ## literature

What does the poet find ironic about her situation? In the poem In memory of M.B by Anna Akhmatova.

90. ## Physics

A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.1 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 1.0 s, determine each of the following. 12.6 m/s at

91. ## math

62 more than the quotient of 18 and 3

92. ## chemistry

Describe in detail, the steps a student needs to carry out to accurately obtain a 500 ml solution of .100 M HNO3 from a solution of 1M HNO3

93. ## physics - help !!!!!!!!

The magnitude of a vector is always : - a positive number - greater than 1 - an integer - none of the above. Thank you

94. ## physics

The National Transportation Safety Board is testing the crashworthiness of a new car. The 1.87 103 kg vehicle, moving at 11.3 m/s, is allowed to collide with a bridge abutment, being brought to rest in a time of 0.463 s. What force, assumed constant, acted

95. ## chemistry

What is the volume of CO2 at 25 degrees C and 1.3atm if 10.0g of Cburns at STP?

96. ## Science

The rest stops the driver made are included in the calculations because that is !@#\$%^& the problem is defined. However, suppose the bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was

97. ## Anatomy

what is the white matter tracts in the ventral portion of the midbrain?

Mary Olivers poem the journey explain the decision that the "you" in the poem made, and whether or not you think it was the right decision. I don't understand what their trying to say

Pronuniation