# teresa

Popular questions and responses by teresa
1. ## science

There are three sources of resistance in a parallel circuit. Two of them are rated at 20 ohms, the other at 10 ohms. What is the circuits total resistance?

2. ## ALGEBRA

Find the choice below which gives a first step in solving the given system of equations by the addition method 6x - 5y = 12 x + y = 3

3. ## physics

A thin spherical shell of mass 4.00 kg and diameter 0.200 m is filled with helium (density ρ = 0.180 kg/m3). It is then released from rest on the bottom of a pool of water that is 4.00 m deep. (a) Neglecting frictional effects, show that the shell rises

4. ## Statistics

Bookstore has a website for which 90 percent of their book sales are to out of state customers and not subject to the collection of sales tax . The sample proportion of all sales to out of state customers from samples of size 100 will vary in repeated

5. ## algebra

Joe's electric made 17 customer calls last wk and 23 calls this week. How many calls must be made next week in order to maintain an average of at least 21 calls per week for the three week period? At least blank calls must be made to maintain an average of

6. ## geometry

What is the probability of 2 randomly chosen angles being congruent in a general triangle?

7. ## chemistry

Which of the following quantum numbers describes the shape of an orbital? A) principle quantum number (n) B) magnetic quantum number (ml) C) spin quantum number (ms) D) Schrodinger quantum number (S) E) (azithmal) angular momentum quantum number (l)

8. ## math

from least to greatest, the perfect square factors of 3150 other than 1 are?

9. ## Early Childhood

Mrs. Bates watched David work a puzzle that he had chosen from the ones she put on the table. She listened and commented when David made guesses at the correct location for the pieces. This is an example of a/an __________ activity. A. structured B.

10. ## Chemistry

Iron has density 7.87 g/cm3. If 52.3 g of iron is added to 74.5 mL of water in a graduated cylinder, to what volume reading will the water level in the cylinder rise? mL

11. ## math

find the height in feet of a ball after 6 seconds in the air. after one second the ball is 148 feet in the air; after 2 seconds it is 272 feet in the air

12. ## precal

Find all solutions of the equation in the interval , 02π . =2sin2x−2cosx Write your answer in radians in terms of π . If there is more than one solution, separate them with commas.

13. ## Chemistry

25.00 mL of heavy water (D2O where D is a hydrogen with a neutron in its nucleus) at 20 degrees C was pipetted into a 37.234 g beaker. The final mass of the beaker was 64.859 9 a- what is the density of heavy water at 20 degrees C b-The density of normal

14. ## calculus

A water trough is 8m long and its cross-section is an isosceles triangle which is 60cm wide at the top, and the height is 60cm. The trough is not full. Give an expression for V, the volume of water in the trough in cm^3, when the depth of the water is d

15. ## math

Mrs. Kong uses 1/3 of a stick of butter in a pie. She uses 5/8 of the remaining butter in a cake. What fraction of the stick of butter is left

16. ## math

michelle has some stamps. Her sister has half as many stamps as does. They have 1080 stamps in all. Home many stamps does Michelle have

17. ## Maths

A rectangle has an area of 36m2 list all possible lengths of sides using while numbers it could have

18. ## Cincinnati state

The perimeter of a volleyball court is 180 feet, anditswidth is 40 feet Find the length of the volleyball court

19. ## Chemistry

Merchants usually sell small nuts, washers, and bolts by weight (like jelly beans!) rather than by individually counting the items. Suppose a particular type of washer weighs 0.128 g on the average. What would 130. such washers weigh?

20. ## chemistry

Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O?

21. ## Chemistry

How many atoms of nitrogen are in 3.00g of N2O5?

22. ## math

the following investments require table factors for periods beyond the table, create the new table factors AND present value \$31,000 (compound amount) time period is 50 years nominal rate is 5% and interest compounded annually thanks

23. ## Math 208

Rectangle Dimensions: The length of a rectangle is 7 inches longer than the width. If the perimeter of the rectangle is 62 inches, find the measures of the length and width.

24. ## physics

A storage tank of negligible mass and 30 m high is filled with gasoline

25. ## finance

Calculate the after-tax cost of preferred stock for Bozeman-Western Airlines, Inc., which is planning to sell \$10 million of \$6.50 cumulative preferred stock to the public at a price of \$50 a share. Issuance costs are estimated to be \$2 a share. The

26. ## statistics

In a population of exam scores, a score of X = 48 corresponds to z = +1.00 and a score of X = 36 corresponds to z = -0.50. Find the mean and standard deviation of the population.

27. ## History

Why were the members of the Third Estate dissatisfied with their way of life under the Old Regime?

28. ## math

Julian and Stacey needed 10 liters of water to fill a tank. Stacey filled the tank with 3 11/12 liters of water. Julian poured 1 2/5 liters less than Stacey into the tank. How much more water is still needed to fill the tank?

29. ## math

A bus driver filled up 7/8 of her fuel tank for a trip. She used 6/7 of the fuel by the end of the trip. The capacity of her tank is 70 gallons. How much fuel did she use for the trip?

30. ## math

you have 120 pieces of fabric to make a blanket. each piece of fabric is a square with a side length of 6 inches. you use as many pieces of fabric as possible to screat a square blanket. What is the area of the blanket? How many pieces of fabric are left

31. ## math

what is the lowest common multiple of 32 and 40

32. ## math

a music store gives every 20th customer a \$5 gift card. Every 50th customer gets a \$10 gift card. which customer will be the first to receive both types of gift cards?

33. ## math

a music store gives every 20th customer a \$5 gift card. Every 50th customer gets a \$10 gift card. which customer will be the first to receive both types of gift cards?

34. ## math

what is the lowest common multiple of 32 and 40

35. ## math

Zach's rope is 15 feet long. He cuts it into three pieces. 1st piece is 3.57 ft longer than the 2nd piece. 3rd piece is 2.97 feet longer than the 2nd piece. How long is third piece?

36. ## math

Ben sells 7/12 of the pottery he made. Of the remaking pottery, 3/5 are vases and the rest are bowls. What fraction of all the pottery is the unsold bowls?

37. ## math

justin spends 7/9 of his homework time on math and social studies. He spends 4/7 of this time on math. What fraction of the total time does he spend on social studies?

38. ## Income tax

Steve and Sue are married with three dependent children. Their 2015 joint income tax return shows \$389,000 of AGI and \$60,000 of itemized deductions made up of \$30,000 of state income taxes and \$30,000 of charitable contributions.

39. ## math

James is painting his 10 by 8 foot bedroom wall that contains a 2 by 3 foot window. How many square feet of wall does he need to paint

40. ## math

how to write the expression 25 less than 12 groups of 15? 25-12(15)... is this correct

41. ## math

The mass of a box with 6 tennis balls is 2 kg 40 g. The same box with 10 tennis balls is 3 kg 160 g. What is the mass of the empty box?

42. ## math

Grandpa Mick opened a pint of ice crew. He gave his youngest grandchild 1/5 of the ice cream and his middle grandchild 1/4 of the remaining ice cream. Then, he gave his oldest grandchild 1/3 of the ice cream that was left after serving the others. Who got

43. ## math

ABCD is a rectangle of perimeter 48cm. AB=6 cm and CD=DE. What is the length of ABCD?

44. ## Math

in figure LM = 18 ft, KM=16 ft and KN=14ft what is the area of KLM

45. ## Science

How many traits are involved in a monohybrid cross? How many alleles are involved? What prevents the expression of a recessive allele? When gametes form, what happens to the alleles for each trait?

46. ## MATH

MAYA had \$2740 in play money and Emily had \$3560. Maya had to give some money to Emily. After that, Emily had 4 times the amount of play money as Maya. How much money did Maya have in the end? How much money did Emily have in the end?

47. ## Chemistry

According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.41 g of magnesium oxide. When he weighed his product after reaction, only 1.33 g of magnesium oxide was present. What is the student's percent

49. ## Chemistry

'calculate the mass in amu of 2.879 1023 xenon atoms'

50. ## chemistry

28.09 g of silicon contains 6.02 1023 silicon atoms. What is the mass in grams of 1.06 1025 silicon atoms? Can you help me please.

51. ## chemistry

Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

52. ## Chemistry

Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

53. ## chemistry

find the mass of water(H2O) needed to react with 150 grams of potassium(K)

54. ## math

this investment require table factors for periods beyond the table. create the new table factor AND the present value for \$100,000 (compound amount) for 50 years at a nominal rate of 5 percent with interest compounded annually thanks

55. ## Math

Find the z-scores that bound the middle 55% of the standard normal distribution ____ small value _____ larger value

56. ## college chemistry

What is the ratio of KC2H3O2 and HC2H3O2 in a buffer with a pH of 5.25? Ka = 1.8 x10-5?

57. ## chemistry

Given the following reaction and enthalpy change, calculate the amount of heat for converting 100.4g of liquid water (18.02g/mole) to a vapor? delta H= +44kJ

58. ## algebra

A certain kind of animal weighs about 77 pounds at birth and gains 2 pounds per day for the first few weeks. Determine those days for which the animal's weight is more than 129 pounds. The animal's weight is more than 129 pounds when the animal is more

59. ## geometry

Triangle ABC has vertices A(-3,2) B(4.5) AND C(4,-1) Fin out wether the triangle is isosceles?

60. ## finance

When performing a capital budgeting analysis, interest expense included in the cash flows should be based on the current interest cost and not the historical cost of interest. Comment.

61. ## algebra

pricipal is30,000 rate of interest is three and five eigth time thirty years find amount in account .show me step by step how to solve

62. ## Psychology

What are the four key milestones in the development of cognitive psychology as a discipline?

63. ## english

explanation and description no child left behind

64. ## trig

What is the period, amplitude and phase shift for: y=2sin(3x-pi)

65. ## COMM 215

1. The following word group is a FRAGMENT: That movie, one of my favorites.

66. ## psychology

how does ms disrupts normal brain function?

67. ## Math

A ticket booth sold 446 tickets and collected \$3,188 in ticket sales. Adult tickets are \$9.00 and children tickets are \$2.00. How many adult tickets were sold?

68. ## finance (Check Answer plz)

Following are rates of return on medical equip. company's stock and debt, and on the market portfolio, along with the probability of each state. State Prob. Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 What is

69. ## finance

Securities A,B,C have the following; Sec. Exp.Ret. Beta A 10 .7 B 14 1.2 C 20 1.8 According to CAPM, what is the correct slope between security A&B? A&C?

70. ## finance

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's

71. ## Pre algebra

is 90.23 an irrational number?

72. ## English

To get in shape for a marathon, Shelby started running around the block a few times each morning.

73. ## Pre-Algebra

A(2,5), B(3,1)

74. ## Math

-5g - 6 for g = -2 A 4 B 16 C 10 D -13

75. ## math

Donald is hiring employees for his new small business. He expects to produce 6 units per employee, and he expects demand to be at least 36 units per day. He plans to pay each employee a yearly salary of \$50,000 and has a budget of \$400,000 per year to pay

76. ## math

serio walked to and from school on 3/5 of the days in one month. He got a ride to school on 7/8 of the remaining days. On the remaining school day that month he stayed home with a cold. How many school days were there that month?

15(p-4+2)

78. ## math

THE DISTANCE BETWEEN EXIT 12 AND EXIT 13 IS 2.7 MILES. THE DISTANCE BETWEEN EXIT 13 AND EXIT 14 IS .9 MILES FARTHER THAN THE DISTANCE BETWEEN EXIT 12 AND 13. THE DISTANCE BETWEEN EXIT 13 AND 15 IS 6.8 MILES FARTHER THAN THE DISTANCE BETWEEN 12 AND 14. THE

79. ## math

The area of a rectangle is 3/5 square meter. The width is 2/5 meter. What is the length of the rectangle? How many times greater is the length that the width?

80. ## math

A chef has a 2 3/8 pound salmon filet. He slices the filet into 4 oz servings. How many pounds is each serving? How many 4-oz servings can the chef create from the filet. How many ounces of salmon are left over?

81. ## math

at a supermarket, pineapple juice sells at \$1 per pint (16 oz). Greg wants to buy eighteen 40-ounce cans of pineapple juice from the supermarket. How much does he has to pay altogether.

82. ## math

(4-5y)-2(3.5y-8)

83. ## math

in a jewelry store, rings make up 5/9 of the inventory. Earrings make up 4/15 of the inventory. How many times greater is the ring inventory than the earring inventory?

84. ## math

4/9 divided by 2/3 divided by 5/6

85. ## math

you are making identical gift bags using 24 candles and 36 bottles of lotion. What is the greatest number of gift bags you can make with no items left over.

86. ## math

(7^2-9)x(6+4)^2

87. ## science

describe the relationship among energy absorption, heat energy, and temperature

6 - 17 - 4

89. ## math

-16 - (-12) + (-8)

90. ## math

The height of a picture is 4.3 feet when rounded to the nearest tenth of a foot. What is the shortest possible height of the picture. Give answer to 3 decimal places

91. ## math

six bags of baseballs weigh 0.5 kilograms each. The balls are then packed into 10 boxes. What is the total mass of the six bags of baseballs? What is the mass of each box? If each box costs \$1.80, how much did the boxes cost altogether?

92. ## math

5/8 divided by y/9 = 1 1/8

93. ## math

at a parade, there are "m" women and 3 times as many men as women. There are 6,352 fewer children than men. Find the number of men and the number of children respectively in terms of m. If m = 7,145, how many peole are at the parade?

94. ## Mathematics

A ship sails 50 km on a bearing of 70 degrees. How far North is it from its starting position.

95. ## math

Amber has a piece of licorie that is 10 feet long. She cuts it into three pieces for her friends. The 1st piece is 4.25 feet longer than the second piece. The 3rd piece is 2.24 feet longer than the second. How long is the 3rd piece?

96. ## math

ned folded a set of origami figures. Of this set, 5/8 are cranes and 1/6 of the remainder are frogs. The rest are grasshoppers. What fraction of the origami figures are grasshoppers?

97. ## math

maggie has 20 ribbons. Of them, 2/5 are polka dotted ribbons. How many ribs are not polka-dotted?

98. ## math

there are six different kinds of fruit pies in a baker. Each pie is the same size and is cut into 8 equal slices. Mr. Javier buys a slice of each pie. How many pies did Mr. Javier buy altogether

99. ## mixed numerals

Yesterday, Joe's Snack Shack went through 8 bottles of ketchup. If they used 1/5 as much mustard as ketchup, how many bottles of mustard did they go through?