# Questions Asked onFebruary 15, 2017

1. ## Social studies

Which of the following are true about railroad expansion in the late 19th century? Choose all that apply A) it led to new managerial forms and techniques*** B)It accelerated the growth of new territories C) It was financed by the government*** D) It grew

2. ## Math

Dave uses 500 milliliters of juice for a punch recipe. He mixes it with two liters of ginger ale. How many milliliters of punch does he make?

3. ## precalculus

Let $R$ be the set of primitive $42^{\text{nd}}$ roots of unity, and let $S$ be the set of primitive $70^{\text{th}}$ roots of unity. How many elements do $R$ and $S$ have in common?

4. ## Social studies

Which of the following is an example of acculturation? speaking a blend of English and another language living in a neighborhood with others from the same country replacing cultural traditions with new ones*** preferring to speak your own language over

5. ## Science

Heat and pressure deep beneath the Earths surface can change any rock into A) chemical rock B) gemstone C) metamorphic rock D) sedimentary rock

6. ## Physics - Potential Difference

An electron moving in the + x-direction has an initial speed of 3.7*10^6 m/s at the origin. Its speed is reduced to 1.4*10^5 m/s at x = 2cm. Calculate the potential difference between the origin and that point. Which point is at the higher potential? My

7. ## math

suppose you borrow RM 14,000 at a rate of 10.0 % and must repay it in 5 equal installment at the end of each of the next 5 years.How much interest would you have to pay in the first year?

8. ## math

Let f of x equals 4 for x less than or equal to 3 and equals the quantity 7 minus x for x greater than 3. Use geometric formulas to evaluate the integral from x equals 1 to x equals 7 of f of x, dx. I got 16 but i dont think it is right.

9. ## Chemistry

In the following chemical reaction between H2 and Cl2 to produce HCl, what is the mass of HCl produced with 0.35g of H2 completely reacts with 12.42g of Cl2?

11. ## english

wat the grammatical name of "whose cake is the best"

12. ## Chemistry

Is the following a properly written thermochemical equation? 2C8H18 + 25O2 → 16CO2 + 18H2O, ΔH = –5,471 kJ/mol No, the equation does not list the enthalpy of reaction. Yes, the equation is correct. No, the equation does not list the states of each

13. ## math

Traveling from City 1 to City 2, a pilot planned a southeast course along the path labeled d. Instead, a storm forced the pilot to travel 16 miles south, then 12 miles east to reach City 2. How many extra miles was the pilot forced to fly? ~ I got D and D

14. ## Math

Alex mounts the clock on a wood base with the shape shown at the right what is the area of the wood base the composite figure is a square with a semicircle on top it the square is 18 inches in length and 20 inches in height

15. ## Physics

A car of mass 1000kg starting from rest and comes down an incline slope if it travel 300m in 30 second calculate i) acceleration ii) force

27. ## Math HELP

1. which of the following side lengths will not make a right triangle A. 12, 16, 20 B. 5, 12, 13 C. 6, 17, 20 D. 3.5, 12, 12.5

28. ## algebraic expressions

Translate the phrase to the equivalent algebraic expression. If no variable is given, use x as the variable. See Example 1. The square of the quantity 34 less than dont know what answer is

29. ## Science

Lead(ll) Iodide can be produced from the reaction of Lead(ll) nitrate and potassium Iodide.What mass of lead(ll) iodide is produced when 50.0 mL of each solution is combined,forming a 0.750 M Solution of potassium nitrate? Please help me to solve this

30. ## Math

Brandy has a card collection with 64 basketball cards 32 football cards and 20 for baseball cards he wants to arrange the cards and equal piles with only one type of card in each pile how many cards can he put in each pile?

31. ## Math

Ross uses nylon string as a border around a square picture. The string is 60 inches long. What is the area of the picture in square inches? Show your work.

32. ## Effective Learning Environment

What color choices would be most appropriate for painting the walls and shelves in a preschool classroom? A. Red, blues, and yellows B. Lime green and neon yellow C. Pastel blues and pinks D. Neutral colors such as whites and tans my answer is d.

33. ## Social Studies

Why did ancient Sumer most likely develop in Mesopotamia? A. The land is situated on a crossroads of trade. B. Highlands shelter the land from outside invasion. ***** C. The Tigris and Euphrates rivers provided fertile land for farming. D. Humans first

Describe the vertical asymptote and hole for the graph of (x^2+x-6)/(x^2-9). a. asymptote: x=2; hole: x=-3 b. asymptote: x=3; hole: x=2 c. asymptote: x=-3; hole: x=3 d. asymptote: x=3; hole: x=-3 I know that it has to either be b or d because the asymptote

Ms. S cut a pizza into 8 equal slices. Each person in her family ate 2 slices. If there are 3 people in her family, what fraction of pizza did they eat all together?

36. ## Math

ABCD is cyclic quadrilateral and AB =CD then prove that AC=BD

37. ## Physics

A Simple Astronomical Telescope In Normal Adjustment Has An Objective Of Focal Length 100cm And An Eye Piece Of Focal Length 5cm What Is The Angular Magnification (a) 20 (b) 25 (c) 1/20 (d) 1/25

38. ## chemistry

magnesium react with hydrochloric acid,what is the volume of hydrogen produced at r.t.p when 0.12g of magnesium ribbon react?

William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four windows (2m by 3m) and a door (2m by 1m). a) What is the cost of painting the ceiling at N$6.50 /m²? b) What is the cost of asked by Lassen 40. ## Math 1. The sides of triangle CAB are in the ratio of 2:3:4. Segment BD is the angle bisector drawn to the shortest side, dividing it into segments AD and DC. What is the length, in inches, of the longer subsegment of side AC if the length of side AC is 10 asked by Anonymous 41. ## maths in a class the ratio of boys to girls is 3;4 there are 12boys in the class what fraction of the class are boys and how many girls are there asked by Anonymous 42. ## STE A polling firm, hired to estimate the likelihood of the passage of an up-coming referendum, obtained the set of survey responses to make its estimate. The encoding system for the data is: If the referendum were held today, estimate the probability that it asked by ALIA 43. ## Maths There are 150 mangoes in basket p and basket q. 1/4 of the mangoes in basket p were yellow and the rest were green. 3/5 of the mangoes in basket q were yellow and the rest green. The number of green mangoes in both baskets were equal. How many yellow asked by Aj 44. ## physics a sled weighing 100lb reaches the foot of a hill with a speed of 40ft/s.The coefficient of kinetic friction between the led and the horizontal surface of the ice at the foot of the hill is 0.030. asked by Anonymous 45. ## math A band sold out a concert with 4200 seats. A random sample of 120 ticket buyers is surveyed and 28 buyers made their purchase on the first day the tickets went on sale. How many of the 4200 tickets are likely to have been sold on the first day they were asked by Ry 46. ## Math maps scale the distance from chillicothe to the current capital is 48 miles using the scale on the map below how many centimeters apart are the two cities asked by J-kid 47. ## physics (simple question) How does increasing the degree of a ramp change the an object's motion. the object is at the bottom and isn't going to go off the ramp. The object has an initial velocity. asked by Anthony 48. ## Math Write the solution of the inequality in set-builder notation: 5r+8 asked by EmberShy 49. ## maths How much money will you have if you started with$45 and put it in an account that earned 10% every year for 20 years?

1. How does sea-floor spreading occur? a.New materials are being added to the atmosphere. b. Earthquakes break apart the ocean floor. c. Sediments accumulate at the area of spreading. d. Molten material beneath Earth's crust rises to the surface. 2. Which

Eric had 10 cookies. He gave 1/2 to Jeff. he also gave 1/5 of cookies to Mike. How many cookies does each boy have? Jeff: 10 x 1/2 = 5 Mike: 10 * 1/5 = 2 Eric = 10-(5+2)= 3

52. ## Math

Given that the measurement is in centimeters of the circle to the nearest tenth (Use 3.14 for r)

53. ## algebra

The divisor and qutient of the number 6123 are same andthe remainder is half of the divisor. Find the divisor.

54. ## math

The mean age of the 43 presidents of the United States (as of 2011) on the day of inauguration is 54.6 years, with a standard deviation of 6.3 years. A researcher constructed a 95% confidence interval for the mean age of presidents on inauguration day. He

75. ## Math

Andy & Jack each have a number of candies. Andy gives 1/2 of his candies to Jack. After that Jack gives 1/3 of his candies to Andy. At last both of them have 20 candies each. How many candies did Andy have at first?

76. ## Math

Graphic designer has offered client 3 options. Poster 1 16x20 inches. Poster 2 1/2 the side of option 1. Option 3 poster that is 5/4 the size of Option 1. The photo on Option 1 is 4x5inches what size would that photo be on Option 2 and Option 3?

77. ## Math

Yolanda buys two types of flowering plants. She buys 36 geraniums and 63 marigolds she wants to plant an eeach row will contain only one type of flowering each row will contain only one type of flowering plant Yolanda uses all the plants she bought in her

78. ## physics

a uniform plank of lenght 5m and a mass1kg support two masses of 500g and 300g . determine the centre of gravity

79. ## math

3.which one of these is a rational number a 150 b. 441 c. 200 d. 250##

80. ## physics

a typical person can tolerate an acceleration of about -49m/s2 (forward). If you are travelling at 110km/h and have a collison with a solid immovable object, over what minium distance must you stop so as to not exceed this acceleration

81. ## Maths

A car depreciates in value by 15% for the first year and for each year later by 12% of its value at the beginning of that year. Calculate the percentage decrease in the value of the car after 3 years. Could someone please confirm the answer to be 38.048

82. ## health

explain how using tolerance can help prevent a conflict

83. ## Social studies

Why the scientific method is better than Aristotelian science and divine Biblical knowledge..? about Galileo on Trial

84. ## SOCIAL STUDIES

In which way are the governments of Saudi Arabia and Oman most similar? 1) the rulers are related 2) they both have absolute monarchies 3) they have newly written constitutions 4) their structures descend from OTTOMAN caliphs I think 4 thanks !

85. ## Physics

A cyclist and his bicycle have a combined mass of 55kg. Total area of the tyres in contact with the road is 2.2 in contact with pressure exerted by the two on the ground.

107. ## Maths

With the matrix A = (0 6 4 12) I have calculated the inverse of (-1/2 1/4 1/6 0) I'm then asked to find the equation of the image f(C) in the unit circle C, in the form of ax^2 +bxy+cy^2=d, where a, b, c and d are integers. I have currently got; (40x^2

108. ## maths

For each of the following linear transformations, write down its matrix and describe the transformation a) g(x,y)=(4x,6y) b) h(x,y)=(x+2y,y) c) k(x,y)=(y,x) so I have worked out the matrices: (4 0 0 6) (1 2 0 1) (0 1 1 0) Not sure what the transformations

109. ## Algebra

factor the following quadratic expressions, if possible. k^2-12k+20 6x^2 + 17x - 14

110. ## Physics-Energy

Loop Track Location 1 Location 2 Location 3 PE (J) 0.16 0.12 0.04 KE (J) 0.03 0.06 0.09 TME (J) 0.19 0.18 0.13 h (m) 0.4 0.3 0.1 v (m/s) 1.2 1.7 2.1 Roller Track Location 1 Location 2 Location 3 PE (J) 0.12 0.08 0.04 KE (J) 0.03 0.06 0.07 TME (J) 0.15 0.14

111. ## Statistics

The probability that a randomly selected two-year-old male stinkbug will live to be three years old is .59963 what is the probability that to randomly selected two-year-old male stinkbugs will live to be three years old? What is the probability that for

112. ## Physics

A cube weight 15N in air and 20N when totally immersed in water. Find the value of the cube of the density.

113. ## French

I am a little confused as to how a sentence can have a what looks like a "complement de phrase" but is actually part of the subject. I am supposed to formulate a sentence that is like this. Thanks for any assistance.

114. ## Science

A box of mass 50kg is placed on an inclined plane. When the angle of the plane is increased to 30°, the box begins to slide downward. Calculate the coefficient of statics friction b/w the plane and box . Draw the free body diagram .

115. ## Science

A bullet of mass 20g, travelling at a speed of 350m/s, strikes a steel plate at an angle of 30° with the plane of the plate. It ricochet off at the same angle at a speed of 320m/s. What is the magnitude of the impulse that the steel plate given to the

116. ## Calculus Question! ASAP!

Hello! I have this problem: x(dx)/sqrt(9-x^2) I was wondering why I can't use trig substitution and substitute sqrt(9-x^2) for sqrt(1-sec^2) and having: integral x = 3sin(theta) dx = 3cos(theta)d(theata) integral 3sin(theta)(3cos(theta))/3cos(theta) having

117. ## Science

A truck of mass 2000kg moving on a highway experiences an average frictional force of 800N. If it's speed increases from 25m/s to 35m/s over a distance of 500m what is the force generated by the truck .

118. ## math 103

find a possible equation for a line that is perpendicular to the graph of 5x-3y=15 if the two lines intersect at x=15

119. ## English

At my side, my father’s pupils were dilated; they were dark, wide and frightened and the angry expression in his eyes alone was enough for him to be arrested captured by the sheer loss of his daughter. He was wild, unfocused and full of fury. A father

120. ## S

An automobile travelling at 80km/hrs has tyres of radius 80cm. On applying brakes the car is brought to a stop in 30 complete turns of the tyres. What is the magnitude of the angular acceleration of the wheels? How far does the car move while the brakes

121. ## Science

An insect of mass 20g crawls from the centre to the outside edge of a rotating disc of mass 200g & radius 20cm. The disc was initially rotating at 22.0 rad/s. What will be it's final angular velocity? What is the kinetic energy in the system?

122. ## U.S. History (help)

In the U.S. House of Reps. When California gains a representative, then another state must have what? How often can the number of representatives be adjusted? After a what?

123. ## Physics

A cubes weight 15N in air and 20N when totally immersed in water. Find the value of the cube of the density. Please I need the answer.

124. ## Math

Which equation can be used to find the measure of an angle that is supplementary to POS

125. ## Math

I need to know if I'm answering this correctly. How can you figure out the size of a of a part without having to draw a diagram? consider example of 2/3 × 4/5. A) describe how you could draw a diagram to me this calculation. I would do 5 vertical lines

126. ## Math

I need help not sure if I'm doing this correctly. Parts of parts: Find each of the following parts of parts without drawing a diagram for each problem explained clearly A) 2/3 of 2/7 I think it's 4/15 because your multiplying. B) 6/11 × 2/7 I think it's

134. ## Math , plz help!!!!!!

A typical Stone on the lowest level of the Great Pyramid in Egypt was a rectangular prism 5 feet long by 5 feet high by 6 feet deep and weighed 15 Tons. what was the volume of the average Stone?? how much did one cubic foot of this stone weigh???plz help

Determine the following (convert to a mixed number where relevant). a) 20 + 10 × (-½) ÷ 5 b) 16 ÷ (3 + 5) × -1 + 2³ c) ½ + ⅓ + ⅜ d) 3⅝ + 4 × -2 e) -1 × -1 ÷ -2 + 3 + 2°

a) A company issued 150,000 shares to three investors in the ratio of 2:3:5. How many shares does each investor own? b) If the company declares a dividend of 35 cents per share, how much (in N$) will each investor receive? asked by Lassen 137. ## Business Math Craig runs a business importing shoes from Italy and selling them in Namibia. For the below questions (a – g), rounds your answers to cents (two decimal places). a) If the Euro / Namibian dollar exchange rate is € 1 = N$ 13.90 and the cost price of a

a) Solve for x: 2x² + 5x = 3 b) Solve for x and y: x + y = 4 and x² + y² + xy - 12 =0 c) Solve for x: 8 2x + 3 = ½x² d) Factorise: 6x² - 7xy - 3y² e) Factorise: 4x³ + 5x²y - 4xy² - 5y³

144. ## too-hard probability sir damon/reiny/steve help

A bag contain 10. identical balls of which 4 are black and 6white a random sample of size 4 is drawn without replacement what is the conditional probability that the sample contain exactly two black given that it contain at least 1 white ball.. Please show

145. ## English

The worst was yet to come.Still shedding tears, I climbed back into the hearse, to return home.To return to a home which would never be the same again... Help:punctuation&Grammar? Is it good?