1. Short-term effects of smoking include (select all that apply) A. bad breath ** B. yellow teeth ** C. feeling tired D. cancer 2. Oxygen enters the blood in the A. bronchi B. pharynx C. larynx D. alveoli ** 3. A respiratory disorder in which the bronchi

2. Math

Radio signals travel at a rate of 3x10^8 meters per second period how many seconds will it take for a radio signal to travel satellite to the surface of earth if the satellite is orbiting at a height of 4.2x10^7 meters? (Hint: Time is distance divided by

3. math

What are two decimals whose product is close to 10?

4. Math

How to convert y^2-8x-16=0 to polar form

5. geometry

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 4:3?

6. language arts

how many syllables are in each line of the poem “silkweed” by philip henry savage? a. 4 b. 6 c. 8 d. 10

7. Geometry

1. The Seattle Space Needle is 604 feet tall. A model for the building is 48 inches tall. What is the ratio of the height of the model to the height of the actual Space Needle? A. 151:1 B. 151:12 C. 1:151 D. 12:151 If anyone knows the rest of the answers

8. Math

Lance wants to find the total length of three boards he use the special 3 1/2 + 2 + 4 1/2 how can Lance rewrite the expression using both the associative and commutative properties of addition

9. language arts

which of these sentences shows the following meaning of the word content: appease or gratify? a. i think the content of that poem was depressing. b. the grade on his test made chang feel content with his effort. c. computers are able to score essays for

10. Chemistry

An apple pie needs 10 large apples, 2 crusts (top and bottom), and 1 tablespoon of cinnamon. write a balanced equation that fits this situation. How many apples are needed to make 25 pies?

11. MATH

A. triangle ABC is reflected over the y- axis. What are the coordinates of the reflected triangle? B. Describe in words what happens to the x- coordinates and y- coordinates of the original triangle's vertices as a result of this reflection.

12. Chem

A balloon is inflated to a volume of 7.0 L on a day when the atmospheric pressure is 765 mmHg. The next day, as a storm front arrives, the atmospheric pressure drops to 725 mmHg. Assuming the temperature remains constant, what is the new volume of the

13. Math

Identify all the sets to which the number 0.46517 Repeating belongs. A. rational number B. irrational number*** C. integer, rational number D. whole number, integer, rational number Pls Help me.Thx

14. language arts

in the poem “cynthia in the snow” by gwendolyn brooks. what does the word “whirs” mean in line 7. a. short turning b. slow swish c. long creak d. fast alarm

15. math

find the measure of x in the triangle. show all your work. it is a 65 by 65

16. GEOMETRY helpppp

In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .

17. Math

David and Ted are walking a trail. Ted walks 3.1 kilometers farther than David. Part a. Write an equation for the number of kilometers David walks, d, if Ted walks 5.4 kilometers Part b. Write an equation for the number of kilometers that Ted walks, t, if

Kendra’s income put her in the top tax bracket (35%) last year. During the same year, she earned \$760 in dividends and \$490 in coupons on a corporate bond. Three years ago, she purchased a common stock for \$835. She sold the same stock last year for

19. MATH

The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its maximum at x= pi and its minimum at x=3pi. which of the following could be the equation of the function? A) f(x)=4 cos x/2-3 B) f(x)=4 sin x/2-3 C) f(x)=4 sin 2x-3 D)

20. Chemistry stoichionetry

the average human requires 120.0 grams of glucose (C6H12O6) per day. How many grams of CO2 (in the cellular reapiration reaction) are produced from this amount of glucose? the balanced cellular respiration reaction is: C6H12O6 + 6 O2 = 6 CO2 + 6 H2O

21. Math

Samantha works part time at a store where she earns \$462.30 each month. Write an expression that can be used to find the amount Samantha earns working any number of months, m.

22. Trig

the graph of an inverse trigonometric function passes through the point (1,pi/2). which of the following could be the equation of the function Y=Cos^-1 x Y=cot^-1 x Y=Sin^-1 x Y=Tan^-1 x

23. Ela

Which word in the sentence is an adverb Three slimy snails crept nearby A: three B: nearby C:slimy D: crept~ I choose this one

24. Social Studies Study Guide

Please check my son's answers. I don't want him to memorize wrong information. Stars by his answers. Thank you for being here! 1. NAFTA is a trade agreement between the United States, China, and India. **the United States, Japan, and Mexico. the United

25. Trigonometry

An airplane is traveling at 650 mph on a heading of 255°. The wind is blowing from a bearing of 320° at 28 mph. What is the ground speed and the actual bearing of the airplane? P.S. I prefer the law of cosine/sine method

26. chem

A hot air balloon is filled with 1.51 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 103 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the balloon.

27. ELA

Which word in the sentence is an adjective The chicks scurried across the grassy field. A: chicks B: scurried C: across D: grassy

28. Pre-Algebra

Find the volume of the rectangular prism? A-23in3 B-297in3 C-318in3 D-159in3 Find the volume of the triangular prism? A-23in3 B-297in3 C-318in3 D-159in3 Find the volume cylinder. A-16,990mm3 B-8,491mm3 C-4,247 D-2,369mm3 Find the volume of a cylinder with

29. Geometry

A model is made of a car. The care is 5 feet long and the model is 8 inches long. What is the ratio of the length of the car to the length of the model? 8:5 15:2 2:15 5:8 My answer is 2:15

30. Calculus

The Department of Agriculture is monitoring the spread of mice by placing 100 mice at the start of the project. The population, P, of the rats is expected to grow according to the differential equation dP/dt equals the product of 0.04 times P and the

What is the rate of return on a \$10,000 bond purchased at \$8,750 with a 10% coupon? The 10% coupon guarantees a return of \$1,000 on the nominal value of the bond, which is \$10,000. The bond's actual sale price was \$8,750, so the \$1,000 coupon must be

32. Math

The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit. The maximum height of the golf ball occurs at x = 2. For up to 2.5 s after the ball is hit, its height is increasing. The maximum height of the golf ball

33. Chemistry

Suppose that a device is using a 5.00-mg sample of silicon that is doped with 1 × 10-5% (by mass) phosphorus. How many phosphorus atoms are in the sample?

34. Math

Suki is trying to solve the equation 62.75 + x = 92. Determine whether Suki could use each statement below to reason and solve the equattion a. Suki can add 62.75 to both sides of the equation. b. Suki asks,"What number can be added to 62.75 to 92?" c.

35. English grammer

Use the conjunctions as,for,since,while in the sentence 1.the sun was very hot.it was still summer. 2.she can find the way.she is so clever. 3.he began to get frightened.it was getting dark 4.mona read a book.the baby slept.

36. GEOMETRY

In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .

37. technology

what is the multiple source test

39. Chemistry

How many grams of carbon dioxide gas are formed when 11.9g of liquid hexane (C6H14) is combusted?

40. Math

In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

41. Trigonometry

An airplane with a speed of 485 km/h is traveling with a heading of 83.5°. The wind velocity is 38 km/h in the direction of 191°. Find the ground speed of the airplane. P.S. How do you solve this problem by only using the law of cosine/sine method?

1. A lower value of the U.S. dollar means that A. the American dollar is worth more when purchasing a foreign-made good. B. a dollar would be traded for less foreign currency than normal. C. the American dollar isn’t backed by gold. D. the dollar can’t

1. In relation to the balance of power, why is the evolution of the position of majority leader necessary? Select all that apply. (2 answers) a. because the power established by the Constitution of the president of the Senate does not establish a strong

44. physics

23.1 .. A point charge q 1 = +2.40 mC is held stationary at the origin. A second point charge q 2 = -4.30 mC moves from the point x = 0.150 m, y = 0 to the point x = 0.250 m, y = 0.250 m. How much work is done by the electric force on q 2 ?

45. English

Select the letter of the pair of words that expresses a relationship most like the relationship expressed by the following pair: 1. oneness: unity a. workout : perspire b. day : hour c. premiere : debut d. gardening : trowel e. ring : wedding (E) 2.

46. math

You work in a local department store that is having an annual 'White Sale' with 1 4 off all sheets and towels. What is this price reduction as a percent?

47. Math

A person wishes to invest R120 000 in three types of bonds:  municipal bonds (MF) paying 6% p.a.,  bank investment certificates (BF) paying 7% p.a. and  high-risk bonds (HF) paying on average 10% p.a. For tax purposes, the person wants the amount

48. Physics

A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.80 m above the floor with a speed of 7.80 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.40 m/s. What is the work done on the ball by air

49. precalc

prove the identity : cos3x =4 cos^3x-3cosx

50. Math urgent

I'm having trouble with my practice in connexus, can someone review with me how to find the value of x in a polygon. If I don't respond right away give me a one minute I have crappy wifi XD

51. AP Physics

What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^-11? ANSWER k=9*10^9 Q=1.6*10^-19 q=1.6*10^19 Ue=? Ue=KQq/r Ue=-4.4*10^-18 j

52. English

1. Select the letter of the underlined sentence part that contains an error in grammar or usage. If the sentence contains no error, select (E). The Endangered Species Act that was passed in 1966, made it illegal (A) (B) for people to kill, either for

53. maths

The speed of light is about 2.99x10^8 m/s. If a rocket travels at one-fifth the speed of light, find its speed in km/h (in scientific notation correct to 2 significant figures)

54. Math

sam decides to build a square garden if the area of the other garden is 9x^2 -24x +16 square feet what is the length of one side of the garden

55. Chemistry

'Describe the difference in intermolecular forces between 2-methyl-3-hexanone and 5-methyl-3-hexanol and how this affects the properties of the substances.' I'm looking at the molecles on Chemspider, and I want to say that because 5-methyl-3-hexanol has a

56. Math

In the Greenwich Public Library, about one-tenth of the books are overdue when they are returned. An average of 580 books are returned to the library each day. About how many books could be expected to be returned on time each day?

57. Math

At a store, 7 cartons of whole milk cost \$10.50 and 5 cartons of fat-free milk cost \$5.00. How much would it cost to buy 3 cartons of whole milk and 2 cartons of fat-free milk?

58. English

1. The best way to improve listening comprehension is to a. take informal notes on what you hear. b. use complete sentences to take detailed notes of both main ideas and details. c. concentrate on listening to the speaker's transitions. (C) 2. Critical

59. English

1. Select the letter of the choice that best completes the meaning of the following sentence: In the early 1900s, Americans who _____ reform and _____ new laws were called progressives. a. denounced...espoused b. advocated...hindered c.

60. Social studies

Explain the similarities and differences between corporate farms and mixed-crop farms? PLEASE HELP ME THIS IS THE ONLY QUESTION IM HAVING TROUBLE WITH THIS IS ALL I NEED

61. Math

I'm stumped on this problem. My math teacher stated to write multiplication tables from 1 to 6 and then solve. I'm not even sure where to start after I finished writing the tables. At the same time, Marisol rolls 2 number cubes that each have sides labeled

62. Precalculus

Which of the following are trigonometric identities? Select all that apply (there are 3 answers). A cos^2(theta)=sin^2(theta)-1 B sin(theta)=1/csc(theta) C sec(theta)=1/cot(theta) D cot(theta)=cos/sin(theta) E 1+cot^2(theta)=csc^2(theta)

63. Math

We have the survey data on the body mass index (BMI) of 648 young women. The mean BMI in the sample was x¯=27.2. We treated these data as an SRS from a Normally distributed population with standard deviation σ= 7.4. Find the margins of error for 90%

64. random

How do you pronounce jiskha?

65. Math

There is a shelf in the library for the books by authors with the last names of Amster, Anderson, Axelson, Bannister, Baxter, and Bayer. The following table shows the number of books that the library has by these authors and how many of those books are

66. Texas history

Texas history In the 1920s oil joint which other two industries as the most important in Texas a cattle in lumber be caught turn and Caddo see current in manufacturing and he lumber in manufacturing

67. maths literacy

think of a number ,add4 multiply by 7and subtract 10

68. English

Select the letter of the better thesis statement for the following essay topic: 1. Describe the domestic role of Saudi Arabia's government. a. In the 1980s rumors circulated that the Saudi government was developing its own arms industry. b. The main goal

69. Math

The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. The lengths of two sides of a triangle are 15 ft and 27 ft. Find the possible lengths of the third side. The

70. chem

Consider the reaction when aqueous solutions of sodium nitrate and ammonium sulfide are combined. net ionic equation?

71. Chemistry

Given the following information determine the reaction Gibbs energy for the formation of silicon dioxide at 298 K Si(s)+O2(g) →SiO2(s) ΔfH°(Si(s))=0 kJ mol-1, S°(Si(s))=18.8 J mol-1 K-1 ΔfH°(O2(g))=0 kJ mol-1, S°(O2(g))=205.0 J mol-1 K-1

72. Probability

The first card Jon draws from a standard deck is a face card (jack, queen, or king). He keeps this card and draws a second one. If he draws at random, what is the probability that Jon now has a pair of kings? Answer as a reduced fraction.

73. Math

In the center of the library is a fountain that holds 500 gallons of water. For every 25 gallons of water they must add 1/4 cup of water treatment. How many cups of water treatment must they add to the fountain to treat the 500 gallons of water?

74. Maths Algebra Application Practice

In a TV trivia show, a contestant receives 500 points for a correct answer and loses 200 points for an incorrect answer. Let c represent the number of correct answers and i represent the number of incorrect answers. What is the expression for the

75. Science

1. A body is moving along a circular path of radius R. What will be the distance covered and the displacement of the body after half a revolution? 2. A person starts from his house and travels a circular distance of 15 km around the walled city before

76. Math

"Point B (4,0) is rotated 45 degrees clockwise about the origin. Write the exact coordinates of B'."

77. Math

A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​\$79. A season ski pass costs ​\$400. The skier would have to rent skis with either pass for ​\$20 per day. How many days would the skier have to go skiing in order

78. Maths

What is the product of 2.5 × 10−15 and 3.9 × 1026? 6.4 × 10^1 9.75 × 10^11

hi i am stuck on this can someone please help me through it. Thanks. does the table represent an exponential function? X/1/2/3/4 Y/4/8/12/16 ikd?

80. chemistry

To what a temperature must be given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?

81. Math

Needing some help with how to set up the problem please. Thank you. Rashida has 3 blouses: red, white, and pink. She has 2 skirts: blue and black. She has 2 pairs of shoes: red and white. What is the probability that Rashida selects an outfit at random

82. chemistry

how many grams of chlorine are in 2.01 grams of TiCl4?

83. math

Five more than 6 times a certain number is 29. Find the number.

84. Circuits2

Three impedances zL=3+j4 ohms, zC=4-j4 ohms and zR=0+j3 ohms are connected in parallel. solve for the power factor of the combination.

85. chemistry

You fill a balloon with 0.76mol of He gas at a temperature of 20 C. What is the pressure, in atm, exerted by the He molecules? Is this pv=nrt? and if yes is it 5.2?

86. Discrete Mathematics

Prove (A1 + A2 +...+ An)^T = A1^T + A2^T +...+ An^T using Mathimatical Induction.

87. math

Find two numbers x, and y that add to 30, and for which 2x^2 +5y^2 is a minimum.

88. tax

A dependent filing as single in 2017 has an income filing requirement of the greater of \$1,050 or earned income plus

I bought 200 shares of stock in June of 1999 for \$8,562.00 and sold them in June of 2009 for \$11,582.00. What is my rate of return? My answer is 35.27%

90. Math

Please help IF I am right or not Which of the following correctly simplifies the expression 3 to the power of 2 multiplied by 5 to the power of 0 whole over 4, the whole squared.? 3 to the power of 2 multiplied by 1 whole over 4, the whole squared. = 3 to

91. math

I'm still working on my car project and wondering if you could check this- this question says: If x represents the number of months and P represents the total paid for the car, write a formula that describes the total amount you have spent on the down

92. Chemistry

When one mole of CH3OH (l) forms from its elements at 1 atm and 25 degrees C, 238.6 kJ of heat are released, and 35.2 kJ are released when one mole of the gas condenses. How much heat is released when one mole of CH3OH (g) forms from its elements at these

93. Maths

This is more of a question of instructions than it is solving. On my page, it has a semicolon and a number behind the question. For example, 1 is x+24= 36;x=_____ I don't see how the semicolon or number and variable are needed in this equation. Please help

94. Science

I am doing a project right now and I'm kind of confused. I did an experiment and this is a question asked "Scientists changed the independent variable to learn about the Mpemba Effect. What did you learn from your results? Do you agree that the Mpemba

95. algebra

Write a compound inequality that represents the following phrase. Graph the solutions. all real numbers that are between negative 7 and 4

96. English

Read the following paragraph: The election of Danielle Meyer as senior class president has been a mixed blessing. While it's true that she has tried to keep open a dialogue between students and the school administration, she has been largely ineffective in

97. Maths

Ifsin=12/13,find the value of sin²_cos²/2sin2cosx1/tan²

98. english essay

essay on taking risks with examples containing Edward Jenner and Mother Teresa (need a thesis, intro, and conclusion, already got body paragraphs)

99. science

What is equinox?

100. Algebra

An 11 foot ladder needs to be positioned so that the top of the ladder is 10 feet above the base of the outside wall of the house. How far should the bottom of the ladder be placed from the base of the wall?

101. Chem

A sample of an ideal gas has a volume of 3.20 L at 14.80 °C and 1.50 atm. What is the volume of the gas at 21.80 °C and 0.989 atm?

102. physics

The illustration for this problem can be seen at screenshots(dot)firefox(dot)com/atwXACAA9akaoAji/null The army is testing out a new prototype artillery cannon with an uncommonly high muzzle velocity of 1000 m/sec . The design bugs haven't been fully

103. chemistry

To what temperature must a given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?

104. Science

If an organism is heterozygous for a particular trait, the organism. A.has the same allele on both chromosomes in a chromosome pair. B.has different alleles on the chromosomes in a chromosome pair.* C.is missing alleles on the chromosomes in a chromosome

105. MATH!!! URGENT!!!!

The probability of making a 6 ft putt is 60%. How many times should you except to make it if you putt the following number of times. 5 times 10 times 30 times 160 times

106. math

The square root of 76 is between what two numbers?

When finding the mass of an object, you determine which of the following? a. quantity of matter in the object b. its weight c. its height d. its length I picked A, but it was marked wrong. So, I guess the more correct answer is B?

108. maths prove help asap

plz help 1.for any 2 non-zero integers x and y there exist a unique integer q and r called the quotient and remainder respectively such that x=yq+r where

109. math

5(x + 10) + x a. 6x +15 b. 5x + 15 c. 6x + 50 d. 4x - 50 whats the answer im rlly confused

0.2x0.8

111. Algebra

3p+3=2p+4.5 bar models I just need help understanding how to do it.

112. algebra 2

The graph of f(x)= (x^2-2x-8)/(x+6) has which of the following? a. point discontinuity b. vertical asymptote c. both of the above d. neither of the above I'm stuck between b and c. I know that the vertical asymptote is x=-6. Help?

113. chemistry

Please balance magnesium sulfate and iron III acetate