# april

1. ## chemistry

Given the following equations: 2 H2O2 (aq) → 2 H2O (l) + O2 (g) and C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l) The first reaction is the decomposition of hydrogen peroxide into water and oxygen gas. The oxygen gas generated in the first reaction is
2. ## chemistry

Write the total ionic and the net ionic equations for the following: 3 H2 (g) + 2 AuCl3 (aq) → 6 HCl (aq) + 2 Au (s)
3. ## chemistry

Determine whether a reaction will take place in the following and write a complete balanced equation: You must include phase labels. Use NR for no reaction. 1.) Ca(OH)2 (aq) + Al(NO3)3 (aq) → 2.) Cu(C2H3O2)2 (aq) + Na2SO4 (aq) → 3.) H2SO4 (aq) + KOH
4. ## Physics

a 107 lb little red wagon full of kids is on the top of a 41.4 m hill. the wagon falls down the hill and up a 14.5 m hill. how fast is it going on the top of the second hill if there is no friction?
5. ## Physics

which statement is true concerning the interference pattern from a double slit experiment? a) the dark fringes appear equally spaced b) the dark fringes increase spacing farther from the center line. c) the spacing of the bright fringes is twice that of
6. ## Math

96÷16+(25x2)-15-3
7. ## Math

Create a story problem using 36
8. ## Algebra

Suppose that the number of bacteria in a certain population increases according to a continuous exponential growth model. A sample of 1800 bacteria selected from this population reached the size of 2272 bacteria in five hours. Find the hourly growth
9. ## concepts in healthcare

Explain procedures and resources available for assisting patients with special needs such as those for whom English is a second language, are hearing impaired, sight impaired, or who have any other type of physical or diversity related disposition that
10. ## math

On a map, 1 inch equals 20 miles. Two cities are 135 miles apart. What is the distance between the two cities on the map?
11. ## Statisix

The mean price of photo printers on a website is ​\$241 with a standard deviation of ​\$60. Random samples of size 30 are drawn from this population and the mean of each sample is determined.
12. ## Math

Use properties of logarithms to rewrite the expression. Simplify the results if possible. Assume all variables present positive real numbers. log2(2squareroot 3/5)
13. ## Math

Use properties of logarithms to rewrite the expression. Simplify the results if possible. Assume all variables present positive real numbers. Log6(7m+3q)
14. ## Math

Sove the logarithmic equation x=log100(10)
15. ## Math

Find the correct end behavior diagram for the given function. f(x)= -x^5-3x^3-6x+7
16. ## Math

Natasha went to Japan for a business trip. Natasha converted \$1100US into 110682 Yen at the local bank. Natasha spent 87438.78 Yen on this trip and returned with the remaining Yen to the US. How much will the remaining Yen convert to in US Dollars when
17. ## Math

Find the vertex f(x)= x^2+6x+5
18. ## Math

Write an equation in slope intercept form for the line describe Through (-5,6), perpendicular to x= -2 I got x= -5 which i got wrong
19. ## Math

Write an equation in slope intercept form for the line described Through (-1,4) parallel to x+3y=5
20. ## English

What is Hawthorne’s attitude toward Puritan people and Puritan beliefs in The Scarlet Letter ?
21. ## History

Why do you think Columbus kept a private log of the miles the ships actually traveled?
22. ## Math

Which answer will be greater 1/3÷5 or 5÷1/3
23. ## physics

A 7.4kg block starts 1.2m above the ground, at the top of a frictionless ramp. At the bottom of the ramp is a flat stretch of rough (μk = 0.15) ground 3.0m long. After sliding 3.0m, the ground becomes frictionless, and the block hits a spring (k =
24. ## Algebra 2

The sum of three numbers is 36.the first number is two times the second number and the second number is four less than the third number. What are the numbers?
25. ## Concepts in number sense

An odd number whose thousands digit is twice its hundreds digit
26. ## Maths

Prove (cosecθ-cotθ)^2=1-cosθ÷1+cosθ
27. ## java program

Create a program that will print the student’s letter grade given the following specifications : 90 – 100 = A 80 – 89 = B 70 – 79 = C 60 – 69 = D below 60 = F
28. ## math/algebra

Find the hang time for a golf ball hit 150 feet into the air. The time T in seconds is given by the function T(x)= square root of x over 2
29. ## Language Arts

Can you check my answer? Matt hiked the trail yesterday. It made him tired. Which sentence combines the two sentences using a gerund phrase? A- hiking the trail yesterday made Matt tired B- Matt hiked the trail and it made him tired. My answer C-It made
30. ## Chemistry

What is the product for the following reaction: The reaction is a chair conformer of 1-methyl-1-cyclohexanol, with OH in the axial position and the methyl in the equatorial position, reacting with HCl. I'm wondering if this reaction is both SN1 and E1, and

Pedro has Abadia back and can only lift 32lbs. He is going hiking and has packed his sleeping bag, two pairs of socks, and 2 bottles with 4 liters of water each. If Pedro is carrying his limit, one pair of socks weighs .8 lbs, and his sleeping bag weighs 3
32. ## Multiplicative inverse

Angelo says that if you know one unit rate in a proportional relationship, the other unit rate is always the multiplicative inverse of the unit rate you know. Is Angelo correct? Explain

To improve her cardiovascular capacity,Mia wants to increase the distance she walks each day. She now walks 1/2 mile in 8 1/2 minutes. If Mia keeps the same pace, will she be able to walk 1 1/2 miles in less than 1/2 hour?
34. ## Math

Laurie and Anna are running a 3 mile race. After 5 minutes, Laurie has run 3/5 miles and Anna has run 7/10 mile. If both ladies can keep their same pace for the remainder of the race, how many minutes ahead of Laurie will Anna cross the finish line?
35. ## Math

Victor can ride his bike 15 miles in 2 hours. He uses this ratio 15:2, to write an equation that shows the relationship between the distance he bikes and the time it takes. Victor's work is shown below. Is his equation correct?
36. ## statistics

A sign on the gas pumps of a chain of gasoline stations encourages customers to have their oil checked, claiming that one out of four cards need to have oil added. If this is true, what is the probability of the following events? a. One out of the next
37. ## Science

An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.5 A, how much electrical energy is used by the bulb in 15 minutes?
38. ## Science

Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.
39. ## Science

Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.
40. ## Math

ewrite each equation below. Then solve your new equation. Be sure to check your solution using the original equation. 4/x=x+3
41. ## Math

The parabola y=x^2 How can that equation be changed to shift the parabola three units to the left and five units down
42. ## Math

The price of gas went up by 0.5% last month. Suppose gas currently costs \$2.44 a gallon. If the price of gas continues to increase at this rate. What will it cost one year from now? When will it cost \$5 a gallon?
43. ## Spanish 2

In the following, underline the correct past tense. So, the preterite and imperfect Los estudiantes ( tomaban/tomaron) apuntes mientras la profesora ( hablaba/hablo) Would it be tomaban and hablo
44. ## Math

Mary cut pizza into 16 slices. If she gave 3/8 of the pizza to her friend, how many slices of pizza did she give away
45. ## Spanish 2

In the following, underline the correct past tense. So, the preterite and imperfect Los estudiantes ( tomaban/tomaron) apuntes mientras la profesora ( hablaba/hablo) Would it be tomaban and hablo
46. ## Trigonometry

For which angles in degrees if any, is sin A not equal to 1/csc A? Answer for 0 through 359 degrees.

*
48. ## Math

It is possible to have an angle where sin A > 1. True or False
49. ## Math

cotA = tan(90degrees- A) True or False The vectors and are orthogonal True or False 2 = 16 True or False * = + = Find c if a = 3, b = 5, and A = 30degrees=
50. ## Math

cotA = tan(90degrees- A) True or False The vectors and are orthogonal True or False 2 = 16 True or False * = + = Find c if a = 3, b = 5, and A = 30degrees=
51. ## Math

A plane is flying on a course with a vector of , where the 250 is the speed due north, and the 100 is the speed due east. The wind is blowing where the directions are also north and east, in the same order. How fast is the plane flying? All values are in
52. ## Math

Given that an equation of the form f(x) = x^n has n solutions, and that the solutions are equally spaced at a given radius in the complex plane, discuss why complex solutions must occur in conjugate pairs when .
53. ## Math

Given that an equation of the form f(x) = x^n has n solutions, and that the solutions are equally spaced at a given radius in the complex plane, discuss why complex solutions must occur in conjugate pairs when .
54. ## Math

For f(x) = 0.01(2)x, find the average rate of change from x = 3 to x = 8. A.0.08 B.0.496 C.2.48 D.5
55. ## Trigonometry

Suppose a planet has a radius of 5,000 km. Starting at the point on its surface at 0 degrees longitude and 0 degrees latitude,find the distance to the point on its surface at 30 degrees longitude and 60 degrees latitude.
56. ## Math

Draw the line through the point (4,5)that is parallel to the y-axis. Write the equation of this line and state its slope. Can anyone assist me. The example or instructions is not in my text.
57. ## I need Help!!!

Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (−3, 1) and (9, −3)
58. ## Algebra

Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (Objective 3) (−3, 1) and (9, −3)
59. ## math

Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What
60. ## Trigonometry

Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What
61. ## English

For questions 7-10, identify the type of noun underlined in each sentence. 7. The AZTECS made sacrifices to their gods. (2 points) Select all that apply. Common. Proper. Compound. Collective. 8. A SWARM of insects surround the raft as we drifted down the
62. ## Intermediate math

I have to factor these two problems but am having some difficulties X^3y^6-64 & (x+y)^3+(x-y)^3
63. ## psychology

Which approach would explain that phobias are acquired through classical conditioning and the hypochondriac's "sickness behavior" is reinforced by sympathy and attention?
64. ## Science

A hollow iron cube has measures 5cm on each side and has a mass of 20g will the iron cube sink or float?
65. ## Trigonometry

Two planes are flying at the height of 10-km. They are going at the same speed, and both traveling due north. If the planes are 3,000 km apart as measured along the surface of the earth, what angle do the lines from the planes make to the center of the
66. ## history

Among the legislative acts passed during Franklin Roosevelt’s first term as president, which one gave relief to artists, actors, and writers? A. Works Progress Administration B. National Recovery Administration C. Tennessee Valley Authority D. Civilian
67. ## chem 101

How many milliliters of 0.205 M NaOH solution are needed to completely neutralize 5.50 mL of 0.865 M H2SO4 solution?
68. ## science

An astronaut has a mass of100kg. She recedes from her spacecraft using spurts of gas from a small unit on her back. If the force generated by the gas spurt is 50N, calculate her acceleration.
69. ## Finance

what is the present value of \$2500 per year for 9 years discounted back to the present at 11 percent?
70. ## algebra

A cubic polynomial function f(x) has leading coefficient -2 and intercepts the y-axis at 2. If f(1)=1, and f(-2)=-2, find f(-1) and write the complete function.
71. ## us history

Who explored enough of South America to deem it a new continent?
72. ## health part2

The sole activity of the respiratory system is breathing. True False The exchange of gases between the blood and tissue cells is external respiration. True False Air flows in the process of pulmonary ventilation because of pressure differences between the
73. ## health part2

The sole activity of the respiratory system is breathing. True False The exchange of gases between the blood and tissue cells is external respiration. True False Air flows in the process of pulmonary ventilation because of pressure differences between the
74. ## Body Systems II

Arteries carry blood ________ the heart.
75. ## math

Shelby walks at a constant rate. the equation that represents this relationship is d=4t, where d is the distance in miles and t is the time in hours. What does the constant 4 tell you about shelby? Make use of structure. What question is answered by the
76. ## math

The probability of getting a white marble from a bag is 1/5. If there are 37 white marbles in the bag, what is the total number of marbles in the bag
77. ## Math

A square with a side length of 2s has a smaller square inscribed. The vertices of the smaller square are at the midpoints of the sides of the larger square. What is the ratio of the larger square to the area of the smaller square? Express your answer in
78. ## word problems

miguel is 5ft 10 inches tall On a sunny day he casts a shadow of 4ft 2 inches long. At the same time, a nearby electric tower casts a shadow 8ft 9 inches long. How tall is the tower? Please help me set up the equation. Do i use is actual height or his

At lunch 3 1/4 small pizzas were equally devided into 4 people one person eats 1/4 of what he was given how much of a whole pizza did that person eat
80. ## Math

luc has 1 h of homework to do. He has assignments to complete for social studies and math, and a science test. he sepends 2/5 of the time completing the social studies assignment, and 1/3 of the time on math. How much time does Luc have left to study for
81. ## math

Evaluate: -3/4 - 1 3/8 A: - 17/8 B: -1 C: 17/8 D: -5/8 I put C but its was incorrect. I'm to sure what the correct answer would then be. can you show me how to solve it and how to achieve the correct answer?
82. ## physics

turtle goes 0.50m/s rabbit goes 3.0m/s^2.. rabbit gives turtle 195 seconds head start. how long will it take for hare to catch turtle? 195*.5=97.5m +amount covered while rabbit is catching up
83. ## math

Jessie has a box of 1000 marbles 75 are yellow 230 are red 331 are blue and 364 are green what fraction of his marbles are yellow and what fraction of his marbles are red
84. ## math

Jessie has a box of 1000 marbles . He has 75 yellow , 230 red, 331 blue and 364 green what fraction of his marbles are yellow? What fraction of his marbles are ref?
85. ## Mathematics

price company received an invoice in the amount of \$3,800 dated may 24 for merchandise they purchased. the terms of the sales are 3/15, 2/30, n/45. what payment should be made if the invoice is paid on June 20?
86. ## Chemistry

A 11.0-mL sample of an unknown H3PO4 solution requires 116mL of 0.140 KOH to completely react with the H3PO4. What was the concentration of the unknown H3PO4 solution (answer in M). H3PO4(aq) + 3KOH(aq) --> 3H2O(l) + K3PO4(aq)
87. ## help

If you could design a study on anything about human behavior to show how it is the same across cultures, what would that be?
88. ## gender roll of development

Do you think it is possible our biological make up dictate whether we will be maternal or parental and we choose our roles accordingly ?
89. ## Astronomy

You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 0.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun): (Points : 10)
90. ## Algebra 2

Which matrix equation is equivalent to 3x+2y-5z=20 5x-10y+8z=17 -8+11y-2z=29
91. ## biology help

The cells in the retina that detect color and bright light are called _________ cells.
92. ## biology help

Frequent urination is associated with alcohol consumption because alcohol suppresses the hormone (A)__________. As a result, urine becomes more (B)__________, and the body loses more water than it should.
93. ## statistics

At the beginning of the semester, students who registered for a statistics course were randomly assigned to two sections, each taught by a different instructor. At the end of the semester, we would like to test whether there are differences in performance
94. ## statistics

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which
95. ## statistics

A fictional study was used to examine the effect of a new antianxiety drug on levels of anxiety. Sixty participants were randomly assigned to one of two groups: 1) new antianxiety pill and 2) placebo pill. One hour after taking the medication or placebo,
96. ## statistics

A professor is interested in the relationship between the number of hours students study for a quiz and their quiz grades. She asked each student to record the number of hours that he/she studied for the final exam. She also recorded the students’ grades
97. ## statistics

A clinical psychologist notices that admission to the psychiatric hospital she works at seem to vary by season. Using a chi-square test, she rejects the null hypothesis that hospital admission is independent of season. What conclusions can she make? a.
98. ## statistics

For which of the following would it be most appropriate to use an ANOVA to analyze the data? A. A researcher is interested in determining the most effective format for advertising. He randomly assigns 60 people to one of three groups: (1) television
99. ## Math

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of calcium? Round to the nearest tenth.
100. ## Science

How much copper 2 sulfate do you need to react with 0.5grams of steel wool?