# Posts by hannah

Total # Posts: 3,512

1. ### social studies

What is a possible explanation of why China abandoned overseas exploration in 1435? A. China could not develop advanced naval technology. B. The voyages of Zheng He failed to impress local rulers. C. Confucian scholars wanted to protect China’s traditions. D. The Chinese ...
2. ### algebra 2

Isabella shipped a 5-pound package for \$4. She shipped a 3-pound package for \$3.60 and a 1-pound package for \$3.20. A 10-pound package cost \$5 to ship. The shipping cost follows a pattern based on the weight of the package. Which expression can be used to calculate the ...
3. ### algerbra 2

1. Marissa is a photographer. She sells framed photographs for \$100 each and greeting cards for \$5 each. The materials for each framed photograph cost \$30, and the materials for each greeting card cost \$2. Marissa can sell up to 8 framed photographs and 40 greeting cards each ...
4. ### Chemistry

please explain
5. ### Physics (Please check)

So I just want to make sure I did the math corretly: My value for angle of incidence was 20 degrees and for refraction it was 15 so I did Sin(20) / sin (15) = 1.32 which is very close to the accepted value. Is this corret?
6. ### Physics (Please check)

Calculate the index (n water) of refraction of water given the angle of incidence and the angle of refraction. I know that the accepted value for n is 1.33 but I am not sure how to calculate the index. Would I use Snell's law: na sin Qa = nb sin Qb? Thank you!
7. ### Math

What would this look like in an equation in slope intercept form? through (-3,4) and (3,-4) Would it be Y=4/3x+0 ??
8. ### Math

What would this look like in an equation in slope intercept form? X-intercept -4, Y-intercept -2 Would it be Y=-1/2x+2 ??
9. ### Math

What would this look like in an equation in slope intercept form? through (0,7) and (1,9) Would it be Y= 2/1x+7 ?
10. ### Math

How would you put this in an equation in slope intercept form? what would it look like? X-intercept -4, Y-intercept -2
11. ### Math

How would you put this in an equation in slope intercept form? what would it look like? Y-intercept -5, X-intercept 3
12. ### Math

How would you put this in an equation in slope intercept form? what would it look like? Slope -3; x-intercept 3
13. ### Math

How would you put this in an equation in slope intercept form? what would it look like? Slope 1/2 ; x-intercept 4
14. ### English

Is that correct?

False
16. ### English

Whitman, Bradstreet, and Wheatley included sensory details in their poetry. True/False
17. ### algebra

please help with my other ones
18. ### algebra

last one write an equation of the line that passess through 10,-4 and is perpendicular to the line whose equation is y=2/5x+8 help
19. ### algebra

I am confused on what to do with this?
20. ### algebra

find an equation of the line that passess throught 0.-6 amd 5, 3
21. ### algebra

wtite an equatiom of the line through 5,-3 and -2 and -8 in slope intercept form
22. ### algebra

one line paasses through -3,-2 and -2,1 and another line passes through -1,2 and 2,1 what is the relationship between the lines are they parrelle, perpendicular, or neither?
23. ### algebra

In a line with a slope of 1/2 a perpendicular to another line, the the slope of the is -2 true or false
24. ### algebra 2

by 10 there are 25 people admitted to a park by 11 there are 50 what would a slope of zero between 2 consecutive hours mean and can the line between 2 consecutive numbers have a negative slope
25. ### math 5th grade

How to solve 547X73
26. ### algebra 2

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
27. ### algebra 2

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
28. ### math 5th grade

How to solve 547X73
29. ### algebra

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
30. ### algebra 2

the 2 unequalities -26<4k-2 and 2k-1<6 A. Write a compound inequality to combine the inequalities shown previously. and B. Solve the compound inequality for values of k. Show your work. Write your final answer as one inequality. please help
31. ### Geometry

A ladder 12 m in length rests against a wall. The foot of the ladder is 3 m from the wall. What is the measure of the angle the ladder forms with the floor?
32. ### math

is 3/8 more,less than or equal to 40%
33. ### algebra 2

please help me with this
34. ### algebra 2

A garden supply store sells two types of lawn mowers. The cashiers kept a tally chart for the total number of mowers sold. They tallied 30 mowers sold. Total sales of mowers for the year were \$8379.70. The small mowers cost \$249.99 and the large mowers cost \$329.99. Find the ...
35. ### algebra 2

You have \$22 in your bank account, and you deposit \$11.50 per week. Your cousin has \$218 in his bank account and is withdrawing \$13 per week. The graph of this problem situation intersects at x=8. What does this mean? A. In 8 weeks, you will have triple the amount of money in...
36. ### algebra 2

A garden supply store sells two types of lawn mowers. The cashiers kept a tally chart for the total number of mowers sold. They tallied 30 mowers sold. Total sales of mowers for the year were \$8379.70. The small mowers cost \$249.99 and the large mowers cost \$329.99. Find the ...
37. ### algebra 2

I need to graph these what would be the equations x=300 y=-300 x=200 y = 400/3 are these the correct answers
38. ### algebra 2

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
39. ### algera

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
40. ### algebra 2

Ms. Tweed earns \$12 an hour. Deductions for taxes and insurance take 25 percent of her earnings. Which equation could be solved to find Ms. Tweed’s take-home pay, p, after 80 hours of work?
41. ### algebra 2

A. 75 = 10d + 5n B. 75 = 10d · 5n C. 75 = dn D. 75 = d + n
42. ### algebra 2

please help me with this would it be 75=10D+5N
43. ### algebra 2

Marshall has \$1.25 in dimes, d, and nickels, n, in his pocket. Which equation could be solved to find the possible combinations of dimes and nickels Marshall has?
44. ### biology

Covalent bonds are not affected by chemical reactions. true ir false
45. ### biology

What are the reactants in the following chemical formula? C6H12O6 + 6O2 ¨ 6CO2 + 6H2O
46. ### algebra 2

would 90=3y+2-5y be right
47. ### algebra 2

. A tile setter is joining the angles of two tiles, A and B, to make a 90-degree angle. The degree measure of Angle A can be represented as 3y + 2 and of Angle B as 5y. Which equation represents this situation? these are the one I neeeed help with
48. ### algebra 2

One-fourth of the distance between two cities is 100 miles less than two-thirds the distance between the cities. Which equation expresses this situation?
49. ### algebra 2

do you guys tutor
50. ### algebra 2

7.15 =1/3 P+4.50 or 7.16=1/3 (p+4.50)

yes
52. ### algebra 2

Three friends share the cost of a pizza. The base price of the pizza is p and the extra toppings cost \$4.50. If each person’s share was \$7.15, which equation could be used to find p, the base price of the pizza?
53. ### algerbra 2

Lisa buys a carpet for \$230. The price is \$3.50 per square foot. If Lisa had a special discount of \$50 off, which linear equation could be used to find the area, A, of the carpet?
54. ### algebra

A restaurant meal for a group of people cost \$85 total. This amount included a 6% tax and an 18% tip, both based on the price of the food. Which equation could be used to find f, the cost of the food
55. ### Algebra 1

I'm having trouble putting these equations in standard form. PLEASE HELP ME!!! Y=12x+4 Y= -8x+-5 Y=-2x+8 Y=5x+5 Y=18x+-3
56. ### algebra 2

that is a division signs '
57. ### algebra 2

how do you simplify 5-x _______ x^2-20 to = 4
58. ### algebra

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
59. ### algerbra 2

C. The company accountant says that the rational expression will never have a zero denominator because , the number of units, is always a whole number. Explain why the accountant is correct. 20^-180/4^2+36x+72 this is the second part can you help me
60. ### algerbra 2

B. The rational expression is not defined for any values of 20^2-180/4x^2+36+ 72 for which the denominator equals zero. Find the value(s) of for which the denominator equals zero.
61. ### algebra 2

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
62. ### biology

4. Using sunscreen and consuming energy drinks involve _____________________. A. using biological information to make informed decisions B. risks to using biotechnology C. using genomics to make informed decisions D. all of the above
63. ### biology

A sheep with human genes spliced into it to produce human antibodies is an example of a(n)
64. ### algebra 2

On a second report that you reviewed, the team simplified the expression to 4. Show how to simplify the rational expression correctly. Explain your steps so that the team understands how to simplify an expression similar to this in future experiments.
65. ### alg

A clothing company uses the expressions that follow to estimate revenue and expenses based on the production of x lots of clothes: Revenue: Expenses: The ratio of revenue to expenses is represented by the rational expression that follows: A. Factor the numerator and ...
66. ### algebra 2

3x2 – 12x + 7x – 28 factor the polynomial by grouping
67. ### algebra 2

here is the last part of the question Another canvas of size B has a width of 2x+3 and a length of 6x-1. Write a polynomial expression, in simplified form, that expresses the difference in area of canvas size A and canvas size B
68. ### algebra 2

can you please help me with this
69. ### algebra 2

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
70. ### quantum physics

the quantum factor algorithm for N=91 is carried out. What is the period k of the periodic superposition set up if it chooses x=8? Guys please help...its very urgent!!
71. ### quantum physics

@anony i got 8 d.help me with 6 a
72. ### Math Critical Thinking

2years=24months
73. ### allgebra

can you help me with this last one?
74. ### allgebra

1/3(x+5=k) solve for x

thank you
76. ### algebra

3(a+5b)-7/2(2b-a) combine like terms
77. ### math

Solve the compound inequality. -3 < 2x - 3 < 5
78. ### math

Suppose a number is chosen at random from the sample space {3, 4, 5, 6, 7}. Find the probability as a fraction and percent. Round the percent to the nearest tenth. Please show your work. P(less than 3)
79. ### calc

C(d) = 120 + 30d + 1/8 d^4 sorry the formating gets off
80. ### calc

The cost of producing d hundred plastic toy dinosaurs per day in a small company is C(d) = 120 + 30d + 1 8d4 dollars. This company is currently producing 500 di- nosaurs each day. Using calculus, estimate how much the company should change the production to make their daily ...
81. ### calc

On January 1, 2013, at a price of x dollars, the demand for a certain product was D(x) = 300 x2 + 10px thousand units per month. t months after January 1, 2013, it is estimated that the price of the product will be x(t) = 3t4/3 +16 dollars. At what rate is the demand changing ...
82. ### calc

the answer is >-1 but when i derived the equation there were still no negative numbers because -7/3 is a constant so it went to 0. after deriving the equation i got t to be -1 so i pluggedin -2 and 0 and got both to be positive(or increasing) all solutions is not an option ...
83. ### calc

sorry the equation is 1/3(t^2) +t^2 +t -7/3
84. ### calc

An ice hockey puck is sliding along a straight line so that its position is s(t) = t3 3 + t2 + t − 7/3 . At which times t is the velocity of the puck increasing? I tried deriviting the equation then solving for t and plugging in numbers to see if it was positive or ...

thankyou!
86. ### calc

Find an equation of the tangent line to the graph of f(x) = (x3 − 3x2 + 1)(2x4 − 1) at x = −1.
87. ### finance

1. Yest Corporation's bonds have a 15-year maturity, a 7% semiannual coupon, and a par value of \$1,000. The market interest rate (r) is 6%, based on semiannual compounding. What is the bond’s price? 2. A 20-year, \$1,000 par value bond has a 9% annual coupon. The bond ...
88. ### physics

A staging that weighs 350 N supports two painters, one 230 N and the other 440 N. The reading in the left scale is Fl = 480 N .What is the reading Fr in the right hand scale? Answer in units of N
89. ### biology

5. A researcher finds that blood alcohol levels cause progressive damage to the liver. All the mice in his study were fed the same amount and types of food. Different concentrations of alcohol were injected into each mouse. One group of mice does not receive any alcohol at ...
90. ### Science

What building blocks are starches made of? What is the difference between sugar and starch? What term describes the size of a starch? What molecule has to be added to a starch to break it down?
91. ### Science

What process is being demonstrated when you put 3 glucose's together?
92. ### physics

A cyclist maintains a constant velocity of 6 m/s headed away from point A. At some initial time, the cyclist is 245 m from point A. What will be his displacement from his starting position after 88 s? Answer in units of m What will be his position from point A after that time...
93. ### geography (ms. sue)

oops! i'm so sorry! i did it again! i keep forgetting to stop typing random names instead of mine!
94. ### geography>3

i saw some typed this name in a different post and i though it was beautiful! again, i'm so sorry!
95. ### geography>3

oops! i'm so sorry! i did it again! i keep forgetting to stop typing random names instead of mine!
96. ### geography>3

the region is russia
97. ### geography>3

why might many of the region's rivers flow toward the north?

thank you!
99. ### geography>3

it's not the water cycle? is it rain?
100. ### geography>3

it got to me by the wind?