gabby

Most popular questions and responses by gabby
1. Math~Polynomials

1)6g+8k-9g+2k(1point) 3g+10k -3g+10k*** 17gk 10k-3 2)-4x+6x^2+5x(1point) 7x^3*** 6x^2+9x 6x^2-9x 6x^2+x 3)a^2+5a-3a^2(1point) 5a+2a^2 -2a^2+5!@#\$%^&* -3a^2+6a 5a-3a^2 4)3x^2+8x+7x(1point) 3x^2+15x*** 18x^3 3x^2+1 3x^2-x 5)Find the degree of

2. science

if all members of a specie disappears, the species is said to be.. a.)extinct b.)endangered c.)threatened D.)keystone

3. 7th Grade Math for Steve.. or Ms. Sue

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 ** The sequence is neither geometric nor arithmetic. 2. –4, 8,

4. Language Arts

1) Which of the following is an example of subjunctive verb mood? Going outside in your bare feet could make you cold. Will you go away? If I make the baseball team, I will skip around the field.*** The bread was old and crusty. 2) Which of the following

5. science

How does driving a car or using electricity lead to global warming?

6. math

A pizza shop offers the toppings shown below. How many different 3-topping pizzas can you make? pepperoni mushrooms sausage onion ham 6 10 ** 4 5

7. Algebra 1

Plz help me with the following problems. Simplify. 5^-1(3^-2) Simplify. mn^-4/p^0q^-2 Write a scientific notation. 0.0042 Write in standard notation. 6.12*10^3 Simplify. Write in scientific notation. 0.5(8 * 10^5) Simplify. Write in scientific notation. (9

8. Urgent Science~!

Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? The wheelbarrow supplied 87.5 J of work. The wheelbarrow has a mechanical advantage of 14.*** The wheelbarrow

9. Math

1.) An expression is show: √21x; for which value of x should the expression be further simplified? a.) 5 b.) 8 c.) 37 d.) 54 2.) An expression is show: √42x; for which value of x should the expression be further simplified? a.) 11 b.) 13 c.) 20 d.) 55

10. statistics

The Economic Policy Institute periodically issues reports on wages of entry level workers. The Institute reported that entry level wages for male college graduates were \$21.68 per hour and for female college graduates were \$18.80 per hour in 2011 (Economic

11. Algebra Question~!

If an object is dropped from a height of 200 feet, the function h(t)=-16t^2+200 gives the height of the object after t seconds. Approximately, when will the object hit the ground? (1 point)

12. Algebra Question~!

The area of a rectangular room is given by the trinomial x^2+7x-30. What are the possible dimensions of the rectangle? Use factoring. (1 point)

13. Rather Urgent math~!

1) 2(3x+5)=46 (1point) 4 5 6 7*** 2) 1/2x + 1/4x = 16 (1point) 16 21.3*** 32 64 3) 6-x-x=18 (1point) -6 6 9*** -9 4) 4x – 3/5 = 2/5 (1point) 1/5*** 5/5 1/2 1/4 Am I correct???

14. Math

Clayton wants to be a musician. After school one afternoon, he spends half his time practicing the drums and 3/4 of the remaining time on homework and dinner. He spends the remaining 3/4 hour talking with and texting friends. How long did he practice the

15. Basic Chemistry

2) Which of the following is a pure substance? (1point) Chocolate milk Orange juice Seawater*** Hydrogen peroxide (H2O2)

16. Ed-tech/History question~!

Which of the following statements about the women’s suffrage movement is most accurate? (1point) Women received the vote with little effort or opposition. Suffragists’ main strategy was the use of political cartoons. The women’s suffrage movement

17. Math

How many solutions does the system of equations have? 3x=-12y+15 and x + 4y=5 Y=6x+2 and 3y-18x=12 x-2y=6 and 3x – 6y =18 y-5x=-6 and 3y-15x=-12 Ok, so I’m having problems with these, so if Steve or Reiny could help with these problems and show the

18. Math

A 16 ounce box of cereal costs \$4.00. How many cents per ounce does cereal cost?

19. Science~!

Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines mines turbines***

20. Microeconomics

8. Assume that the United States is an importer of televisions and there are no trade restrictions. U.S. consumers buy 1 million televisions per year, of which 400,000 are produced domestically and 600,000 are imported. (Worth 2 points) a. Suppose that a

21. Health and Physical Ed

If you choose to smoke, your body will use this substance less efficiently. 1:microorganisms 2:carbon dioxide 3:plasma 3:oxygen I think it is #3

22. One Algebra Question~!

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? (1 point)

23. Chemistry

Methanol is an organic solvent and is also used as fuel in some automobile engines. From the following data, calculate the standard enthalpy of formation of methanol. 2CH3OH + 3O2 --> 2CO2 + 4H2O, (delta H = -1452.8 kJ/mol

24. ~Algebra question~

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? (1 point)

25. Math (PROBABILITY)

Elizabeth wants to use a standard number cube to do a simulation for a scenario that involves three equal outcomes. What is one way in which she can do this?

26. Inequalities (Math)

Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal? (1point) I think it's p

27. math

according to the blue line about how many weeks of practice are required to achieve a score of 50? 15 17 19 21

28. Physics

How close to the edge of the 24.0 kg table shown in Figure 9-47 can a 60.0 kg person sit without tipping it over? m Table is 2.2m long each leg is 5m into the table and there is 1.2m in between each leg. The table is 8m in height.

29. Chemistry

Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 × 10-59, and dissociates according to Ca10(PO4)6(OH)2(s) --> 10Ca2+(aq) + 6PO43-(aq) + 2OH-(aq) Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the

30. math

-6g+5.8=23.8 a=3 b=-3 c=1.83 d=4.93

31. Algebra 1

A student scored 78 and 92 on his first two quizzes. Use a compound inequality to find the possible values for a third quiz score that would give him an average between 80 and 85, inclusive. (1 point) 78

32. chemistry

Write the balanced formula equation, complete ionic equation, and net ionic equation. If no precipitate forms, write "No reaction" a) Hg2(NO3)2 (aq) + CuSO4 (aq) b) Ni(NO3)2 (aq) + CaCl2 (aq) c) K2CO3 (aq) + MgI2 (aq) d) Na2CrO4 (aq) + AlBr3 Please

33. Science... plz help~!

If a 40 kg person is accelerating at 10 m/s^2, then the magnitude of the force acting on him or her is 400 N. (1 point) True False

34. Math

If the probability of an event happening is p, what is an algebraic expression that represents the probability that the event does not happen?

35. Math~Reiny Could you help with this question?

List three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11. Plz help it's urgent.

36. Chemistry- urgent!

When a solution of sodium oxalate (Na2C2O4) is added to a solution of lanthanum (III) chloride, lanthanum oxalate (molar mass 541.86 g/mol) The balanced net ionic equation for the reaction is: 3C2O4^2- (aq) + 2La^3+ (aq) --> La2(C2O4)3 (s) Thirty ml of

37. URGENTquestions for Math

A pair of jeans is on sale for 25% off the original price. Which expression represents the sale price? If the original price of the jeans is \$40,evaluate the expression to find the sale price. s=p-0.25 p;\$30 s=p-25:\$15*** s=p-0.25p;\$10 s=p-0.25;\$39.75

38. MATH HELP PLEASE & THNX!

Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 300,000 − 15,000p copies, but each copy costs \$4 to make. What price will give

39. MATH

I need help idk how to do this... Select the measure of the complement or supplement of the angle. If there is no complement or supplement, select no complement or supplement. 55.1° (1 point) 124.9° 119.9° 49.9° no complement or supplement

40. Physics

A pipe carrying 20°C water has a diameter of 3.1 cm. Estimate the maximum flow speed if the flow must be streamline.

41. This needs tobe turned in in 10min AT MOST URGENT!

1. x over 5= –2 (1 point) –45 35 –10 21 2. 13x – 7 = 136 (1 point) 11 15 8 9 3. Solve the following equation: 3x – 3 = 15 (1 point) 4 5 6 7 4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find

42. Physics

A golfer tees off on level ground, giving the ball an initial speed of 46.5 m/s and an initial direction of 37.5 above the horizontal. a) how far from the golfer does the ball land? b) the next golfer in the group hits a ball with the same initial speed

43. Homework help plz( Steve or Reiny)

Determine if the number is written in scientific notation. If not, explain 32 * 10^4. (1 point) No; it is not written as a power of 10. No; the first factor is not a number between 1 and 10. Yes; the number is written in scientific notation. Determine if

44. Science

5. The process of desertification can occur when (1 point) A. plants usually found in the desert replace trees that have been cut down B. farmers use contour farming techniques C.an area of forest is clear-cut*** D.an area of forest is selectively cut

45. Math

In a factory, a parabolic mirror to be used in a searchlight was placed on the floor. It measured 40 centimeters tall and 90 centimeters wide. Find the equation of the parabola. I tried working this problem out and I got y=-8/405x^2+40, but I'm not sure if

46. Chemistry

Calculate delta H for the reaction below using Hess's Law: C2H6 ---> C2H2 + 2H2 ------------------------------------------ C2H2 + 5/2O2 --> 2CO2 + H2O (H = -1300 kJ) 2H2 + O2 --> 2H2O (H= -572 kJ) 2C2H6 + 7O2 --> 4CO2 + 6H2O (H= -3120 kJ)

47. math

susan throws a softball upward into the air at a speed of 32 feet per second from a 8 foot platform. the distance upward that the ball travels is given by the function. d(t)=-16t^2+32t+8. What is the maximum height of the softball? how many seconds does it

48. chem

If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made?

49. VERY URGENT MATH(Formalizing Relations & Functions

What is the domain of the function below? {(0,2), (3,1), (5,2), (8,4)}? (1point) Is the following relation a function? {(0.3, 0.6), (0.4, 0.8), (0.3,0.7), (0.5,0.5)} (1point)

50. Calculus

A balloon leaves the ground 500 feet away from an observer and rises vertically at the rate of 140 feet per minute. At what rate is the angle of inclination of the observer's line of sight increasing at the instant when the balloon is exactly 500 feet

51. Chemistry

Calculate the solubility of silver chloride in a solution that is .170M in NH3

52. Stasticstics/math

A teacher wants to compare the mean geology scores of two different classes. She is testing the null hypothesis that there is no difference in the population mean scores of the two classes. The difference of the sample means is 51.4. If the standard

53. Two Voice poem

Ok so I have to write a two voice poem on Christopher Columbus finding America, ok so I'm supposed to write how the Europeans felt when they found America and how the Taino (the Indians that were originally there)felt about what happened, and I'm kind of

What was the first South American nation to receive independence? (1 point) Chile Argentina Paraguay Brazil My Answer: 1) Argentina Is this correct?

55. math

orgo has let out 50 meters of kite string when he observes that his kite is directly above zorna. if orgo is 35 meters from zorna, how high is the kite ?

56. Algebra Question~!

A sphere has a radius of 3x+2. Which polynomial in standard form best describes the total surface area of the sphere?

57. Chemistry

Calculate pH of a solution that is 0.255M in CH3NH2 and 0.105M in CH3NH3Br

58. Science~!

Sodium is a metal and chlorine is a poisonous gas. Neither is safe to eat. However, when sodium and chlorine combine, it produces edible table salt. What can be concluded? (1 point) Table salt has similar physical properties of both reactants.*** Table

59. 1 algebra question

What is the difference of the following polynomials? (6x^3 – 2x^2 +4) -(2x^3 + 4x^2 – 5) ________________

60. Math

The first question is this: Helen designs a rectangle with an area of 225 square units. Her rectangle is the largest rectangle (that is, with largest area) with whole-number side lengths that can be made from the perimeter of the rectangle. A. Whay are the

61. Algebra

A box has a volume given by the trinomial x^3+5x^2-24x. What are the possible dimensions of the box? Use factoring. (1 point)

62. Algebra Question~!

A biologist studied the populations of common guppies and Endler’s guppies over a 6-year period. The biologist modeled the populations, in tens of thousands, with the following polynomials where x is time, in years. common guppies: 3.1x^2 + 6x + 0.3

63. math

Lily has \$18. Matt has twice as much of a third of the amount that Lily has, and Carolyn has \$23 more than Matt has. How much money does Carolyn have

64. health and PE

The brain and spinal cord make up the reflex pathway. peripheral nervous system. central nervous system. the fight-or-flight response is it b?

Ok these are some textbook questions i need to turn in soon could you please check and see if they are correct~ 1. x over 4 + 1 = –5 (1 point) –2 16 4 –24 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point)

66. Chemistry

Determine the percent ionization of a 2.45 M solution of benzoic acid

67. Algebra 1

Tell whether the sequence is arithmetic. If it is, what is the common difference? -12, -7, -2, 3,… (1 point)

68. Calculus

Find the relative extrema of the function f(x) = 1/2 x - sinx on the interval (0, 2 pie) please show me how you got this!!

69. Progressive Era

I'm doing a short project on the progressive era... can someone give me at least 5 topics I could talk about in my project, from the progressive era?

70. Chemistry

A solution has a %T value of 75.4% at 600 nm. What is the absorbance of this solution at this wavelength?

71. chemistry

A solution contains 0.142 g of dissolved lead. How many moles of sodium chloride must be added to the solution to completely precipitate all of the dissolved lead?

72. Algebra

Acme Movers charges ​\$280 plus ​\$40 per hour to move household goods across town.​ Hank's Movers charges ​\$75 per hour. For what lengths of time does it cost less to hire​ Hank's Movers? It costs less to hire​ Hank's Movers for times less than

73. Chemistry

How would a student make 500.0 mL of a 0.08500 M solution of iron(III) using a stock solution that is 0.3180 M in iron(III)? Explain how this would be done.

74. History Question

1) Why did the Middle colonies have the most diverse population in colonial America? (1point) Leaders of the Middle Colonies advertised in Europe to attract more settlers. People moved to the Middle Colonies from New England to escape religious

75. VERY URGENT MATH~!!!!!!!!

1. 2(x – 3) = 2x (1 point) one solution no solutions infinitely many solutions 2. 3(y – 3) = 2y – 9 + y (1 point) one solution no solutions infinitely many solutions 3. 10x – 2 – 6x = 3x – 2 + x (1 point) one solution no solutions infinitely

76. SOCIAL STUDIES URGENT!!

Which of the following would NOT be considered an institution? (1 point) families sports clubs organized religion civilizations this is hard umm i believe it's civilizations am i correct~

77. Algebra 1

Eric and Mark were at a ball game and visited the concession stand. They each got a hamburger, and Mark got lemonade and some cotton candy. Eric had a coupon for \$2 off the cost. Mark paid the rest, which came to \$14.50. Cotton candy costs \$5, and a

78. Math

Okay .. Im working on Linear Equations and am VERY confused can someone help me solve this equation? (Remember its : Linear Equation) y=3x+4 Ok Gabby, this is a line with slope 3 and y intercept 4. Have you seen how to graph lines yet? (Incidentally, we

79. Algebra 1

How do you find an expression that represents the area of a triangle? How do you find an expression that represents the area of a rectangle? I just need examples..

80. trig

a plane flying 33,000 ft is 130 miles from the airport when it begins to descend if the angle of descent is constant find this angle

81. Algebra Question~!

A community group is building a playground on a rectangular lot of land. The lot measures 6x by 9x and they want to cut out an area for a circular jungle gym with a radius of 4x. How much of the land will be left over after the jungle gym is built? (1

82. VERY URGENT MATH!!!

1. 3w – 10w (1 point) 13w –7w –7 7w 2. y + 2y +3z (1 point) 2y + 3z 3y + 3z 2y2 + 3z 6yz 3. 6r + r – 5r (1 point) 2r 1r + r 0r 7r – 5r 4. 5x + 2(x + 6) (1 point) 7x + 6 7x2 + 12 7x + 12 7x (x + 6) 5. –3m + 3(m + 6) (1 point) 6 –6m + 6 6m + 18

83. Calc 2

The figure shows a semicircle with radius 1, horizontal diameter PQ, and tangent lines at P and Q. At what height above the diameter should the horizontal line be placed so as to minimize the shaded area? I would post the figure but the website is not

84. Science question

What would happen to the current model of the atom if new information about it’s structure is discovered in the future? Would it be revised, strengthened,proven or defended?

85. Calculus

one ship (A) is sailing due south at 16 miles per hour and a second ship (B), 32 miles south of A, is sailing due east at 12 miles per hour. At what rate are they approaching at the end of 1 hour?

86. Chem

Predict the mass of CuO expected to result from the decomposition of the malachite, based on the balanced equation.

87. Chemistry

A student measures k for a certain blue dye to be 19.4 M^-1 at 560 nm. What is the molarity of the dye in a solution with an absorbance of 0.118 at this wavelength?

88. Chemistry

if 3.00 g of iron metal are reacted in a calorimeter with a heat capacity of 500 J/ degrees Celsius, what would be the final temperature of the calorimeter if its initial temperature were 23.0 C?

89. Chemistry

if 3.00 g of iron metal are reacted in a calorimeter with a heat capacity of 500 J/ degrees Celsius, what would be the final temperature of the calorimeter if its initial temperature were 23.0 C?

How many uranium atoms are there in 9.5 g of pure uranium? The mass of one uranium atom is 4 × 10−26 kg

91. Chemistry

Calculate the pH of a solution that is 0.185M in HC2H3O2 and 0.125M in KC2H3O2

92. Math for Steve

How many solutions does the system of equations have? y=4x+4 y=4x-3 y=-6x-2 y+2=-6x

93. Patterns and nonlinear functions(Algebra 1)

The ordered pairs (1,1), (2,8),(3,27),(4,64), and (5,125) represent a function. What is a rule that represents this function? (1 point) Y=x Y=4x Y=x^2*** Y=x^3 Reiny, Steve, Ms.Sue… is this correct or is it not?

94. Poetry

2) What is the rhyme scheme of the following poem? He sat upon his brand new bike Waiting for his best friend Mike He couldn’t wait to ride to school Others would say his bike is cool (1point) A a b b A b a b a b c d*** A a b a Better?

95. Math~Polynomials

5)Find the degree of -5w-4w^2+7w+16(1point) -5 16 14*** 3 Ok I put stars next to my answer though I'm not sure if I'm correct.. or not so Steve could you tell me if my calculations are way off or if they are correct?....

96. URGENT~MATH For Steve or Reiny

For questions 5-7, find the solution to the system of equations by using either graphing or substitution. 5)y=6-x and y=x-2 (1point) (2,4) (-4,2) (4,2) no solutions 6)y=2x-1 and y=x+3 (1point) (4,7) (7,4) (-7,-4) no solutions 7) y=4x and y+x=5 (1point)

97. physics

A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 196 lb person burn during 7 hours of sleep? (Note

98. Urgent Language Arts

1) Which of the following sentences from "I know Why the Caged bird sings"contains context clues that help you understand the meaning of the word in italics? "Shame" made me want to hide my face.* She didn't " encourage" familiarity. The dress looks

99. Urgent Language Arts~!

10. In the following sentence, "Abraham Lincoln was a widely admired politician,” which statement is correct? (1 point) Add a hyphen between widely and admired. Add a hyphen between admired and politician. Add a hyphen between Lincoln and was. No hyphen