# Angie

Newest questions and responses by Angie-
## Trigonometry

A railroad track is laid along side the arc of a circle of radius 1800 ft. The circular part of the track subtends a central angle of 40 degrees. How long (in seconds) will it take a point on the front of a train traveling 30 mph to go around this portion

*asked on October 4, 2018* -
## Conceptual Physics

If an airplane travels 250 km due north in 1/2 hour, what is its velocity? 500 km / hr 500 km / hr north 250 km / hr I think the answer is b?

*asked on September 18, 2018* -
## Math?

I have to do this portfolio and I have read back and can’t find what I am suppose to be writing or doing help!! Misleading Media Watchdog Portfolio 6th grade

*asked on September 6, 2018* -
## Maths

In a class of 45 students, 24 do arts, 20 to chemistry and 22 to biology. All the students do at least one of 3 subjects.3 do all the 3 subjects while 7 do art and biology, 6 do art and chemistry but not biology. How many do biology only, chemistry only or

*asked on February 26, 2018* -
## Physics

A 500 g ball moving to the right at 9.2 m/!@#$%^&s a wall and bounces in the other direction with a speed of 4.9 m/s. If the ball experiences an average force of 110 N during the impact with the wall, for how long is the ball in contact with the wall?

*asked on February 13, 2018* -
## physics

Sitting in a chairlift, Rebecca has a gravitational potential energy of 5,997.6 J. If Rebecca has a mass of 51 kg, how high off the ground is the lift?

*asked on January 22, 2018* -
## Texas History

Emma is conducting a research project on Texas during the 1840s and 1850s. Which keyword search should she use to find information about why slavery grew

*asked on January 8, 2018* -
## Math

I have to use the Distributive Property to rewrite (5×600)+(5×400) Can you help me? - December 6,2017 Angie Godoy

*asked on December 6, 2017* -
## Math

At Thanksgiving dinner Emma family ate 1/3 of a pumpkin pie what fraction of the pie was left

*asked on November 26, 2017* -
## math

A railroad tunnel is shaped like a semi-eclipse. The height of the tunnel is 28ft and the total width is 50ft. Find the vertical clearance at a point 13ft to the right from the center. Please show all work that leads to your answer. Round your final answer

*asked on August 16, 2017* -
## Math

Dover's current population is 5,074 residents, which is 14% smaller than at the time of its founding. What was the population of Dover back then? I'm sorry, there's another question on IXL I need some help on, I'm just wondering if I'm right, am I? First I

*asked on August 4, 2017* -
## Math

The current population of Summerfield is 16,359 people, which is 90% larger than when David moved there. What was the population of Summerfield back then? I need some help, there's this question on IXL (It's a website that has math problems for you to

*asked on August 4, 2017* -
## College Math

Draw a venn Diagram to illustrate the education level of Smokers Non Smokers and people who never smoked. Use the table below Education Smokers Former Never Total College Degree 12 9 41 62 H.S. Grad 9 10 22 41 Did not grad 9 3 4 16 Total 20 22 67 119

*asked on June 28, 2017* -
## Math

2 cups of sugar is needed for 12 cupcakes. How many cups of sugar for 4 cupcakes? I can figure out how many for 24 cupcakes and 6 cupcakes but not the 4 or 9 cupcakes.

*asked on May 9, 2017* -
## Physical Science

What is the relationship between the temperature of a star and the spectrum of the star?

*asked on May 1, 2017* -
## Math

Megan answered 18 questions correctly on a test. That is 75 percent of the total number of questions. How many questions were on the test?

*asked on April 11, 2017* -
## Chemistry

carbon disulfide is prepared by heating sulfur and charcoal. the chemical equation is S2(g)+C(S)=CS2(g) and Kc = 9.4 at 900K. How many grams of CS2(g) can be prepared by heating 8.9moles of S2(g) with excess carbon in a 5.00L reaction vessel held at 900K

*asked on March 20, 2017* -
## Program Design and Development

Help on Design a class named Book that holds a stock number, author, title, price, and number of pages for a book. Include methods to get and set the values for each data field. Write the pseudocode that defines the class?

*asked on March 20, 2017* -
## Astronomy

The gravity lock of the Moon to Earth is silimar to the action of a A) giant pendulum B) spinning top C) master key D) tidal wave E) magnetic compass I'm torn between A and E.

*asked on March 14, 2017* -
## Rpcc

You throw a ball horizontally off a building with a horontal velocity of 10 m/s. What is the ball's horontal velocity 5 seconds later? What is the ball's vertical velocity 5 seconds later?

*asked on March 3, 2017* -
## ENGLISH

Which form best describes this poem? narrative poem haiku free verse lyric poem

*asked on March 2, 2017* -
## 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 times (10 minus power of 3) in contact with pressure exerted by the two on the ground.

*asked on February 15, 2017* -
## 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.

*asked on February 15, 2017* -
## Physical Science

An elephant drags a tree trunk along a rough horizontal surface by means of an attached rope which makes an angle of 30° with the horizontal. The force in the rope is 4 000N. CALCULATE the horizontal component of the force exerted by the rope on the tree

*asked on February 14, 2017* -
## Algebra

Identify the property that justifies the statement (5+7)6=30+42 Would this be the distributive property or Inverse Prop of Multi? Kind of confused Thank you

*asked on February 13, 2017* -
## Algebra

Set up and solve a system of equations The school that Joe goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 12 adult tickets and 2 child for a total of $122. The school took $160 on the second day by selling

*asked on February 12, 2017* -
## math

A construction company needs to remove 416 tons of dirt from a construction site. They can remove 89 tons of dirt each hour. What is the total number of hours it will take to remove the dirt?

*asked on January 24, 2017* -
## calculus

A 17- foot ladder is leaning against a wall, and begins to slide. The top of the ladder is falling at a rate of 2 feet per second at the instant that the bottom of the ladder is 8 feet from the wall. What is the rate of change of the distance between the

*asked on January 22, 2017* -
## calculus

Determine the intervals on which f(x)=x+(4/x) is increasing and decreasing. Find the coordinates of any max or min points.

*asked on January 22, 2017* -
## Calculus

Does F(x)=9-x^2 satisfy the hypothesis of the mean value theorem on the interval [0,3]? if it does, then find the exact values of all Ce(0,3) that satisfy the conclusion of the Mean Value Theorem.

*asked on January 22, 2017* -
## calculus

how do you find the derivative of this (-x^2)/ (2) +2 and does it have any x intercepts, asypmtotes, or holes.

*asked on January 18, 2017* -
## Calculus

How do you fine the derivative of (x-3)^-3

*asked on January 18, 2017* -
## calculus

how do I graph this using the first and second derivative and three sign charts. i have to label the inflection point, extreme values and the intercepts also. f(x)= x^3-6x^2

*asked on January 8, 2017* -
## calculus

Water leaking onto a floor creates a circular pool with an area that increases at the rate of 3 square inches per minute. How fast is the radius of the pool increasing when the radius is 10 inches?

*asked on January 8, 2017* -
## Calculus

use implicit differentiation to find dy/dx if 5xy+x^2y=10 Is this correct answer for this question (-5y-2xy)/(12x)

*asked on January 6, 2017* -
## calculus

find the equation of the tangent line to the graph of -x^2+2y^2+3x=-2 at the points with x-coordinates x=4

*asked on January 5, 2017* -
## calculus

use implicit differentiation to find dy/dx if 5xy+x^2y=10

*asked on January 5, 2017* -
## calculus

Use the definition of derivative: lim(as h approaches 0) (f(x+h)-f(x)/(h) to find f(x)=(1)/(2x).

*asked on January 5, 2017* -
## calculus

f'(-2) if f(x)= g(h(x))^3 Chart x= -3,-2,-1,0,1,2,3 g(x)= 0,1,3,2,0,-2,-3 h(x)= 1,2,0,3,-1,-2,0 g'(x)= 1,2,-1,-2,-2,-1,0 h'(x)= 0,-3,-2,3,-2,0,1

*asked on January 5, 2017* -
## Calculus

Find f'(1) if f(x)=(h(x))^3 Chart: x= -3,-2,-1,0,1,2,3 g(x)= 0,1,3,2,0,-2,-3 h(x)= 1,2,0,3,-1,-2,0 g'(x)= 1,2,-1,-2,-2,-1,0 h'(x)= 0,-3,-2,3,-2,0,1

*asked on January 5, 2017* -
## calculus

when a circular plate of metal is heated in an oven, its radius increases at the rate of 0.01 cm/min. At what rate is the plate's area increasing when the radius is 60 cm?

*asked on December 21, 2016* -
## calculus

A 13 foot ladder is leaning against a house when its base starts to slide away. By the time the base is 12 ft. from the house, the base is moving at the rate of 10ft./s. How fast is the top of the ladder sliding down the wall then?

*asked on December 21, 2016* -
## calculus

A Veterinarian has 80 feet of fence and he wants to enclose a rectangular dog-run along the back side of his office building. He will not fence the side along the building. What are the dimensions of the dog-run that give the maximum area he desires?

*asked on December 21, 2016* -
## calculus

Jen needs to make a flyer for her dog's birthday party. She wants the flyer to contain 40 square inches of printed portion and she wants to use 1 inch of each side as well as 2 inches of top and bottom of the paper for decoration. What size paper should

*asked on December 21, 2016* -
## calculus

find the location and values of any global extrema of F(x)= x^3-3x^2-9x on the interval [-2,4] (you must show your work by finding critical points

*asked on December 21, 2016* -
## calculus

Find two numbers whose product is 16 and whose sum of squares is minimum

*asked on December 21, 2016* -
## Algebra

a cheese pizza cost $8.75 each additional cost topping costs $1.25. if you order one pizza and have $12.50. how many toppings can you have on the pizza.

*asked on December 8, 2016* -
## Algebra

8-3/4c=5

*asked on December 2, 2016* -
## Algebra

8-3/4c=5

*asked on December 2, 2016* -
## Math

A taxicab charges $2.50,plus$1.78 per kilometer. How long is a trip that costs 21.19?

*asked on December 2, 2016* -
## Math

A cookie recipe calls for 2-3/4 cups of flour and 1-1/4 cups of sugar. If the amount of the ingredients are increased proportionally, and the amount of sugar is increased to 10 cups, how many cups of flour would be needed?

*asked on December 1, 2016* -
## science

Provide at least three examples of real-world applications in use or in development with reliable references.

*asked on November 26, 2016* -
## science

Discuss current or future applications of nanotechnology in fields such as medicine, engineering, space exploration, fuel cell development, air and water purification, and agriculture.

*asked on November 26, 2016* -
## science

Discuss how materials science has advanced to the stage where materials can be engineered to fit a specific purpose.

*asked on November 26, 2016* -
## science

Provide an example of an application or object that is made of materials specifically engineered for that purpose.

*asked on November 26, 2016* -
## science

Discuss scientific and technical concepts related to materials science for plastics

*asked on November 26, 2016* -
## Chemistry

Write a balanced overall reaction from these unbalanced half-reactions. Sn->Sn2+ Ag+->Ag Balanced overall equation I got Sn+2Ag+->Sn+2Ag, but its wrong.

*asked on November 20, 2016* -
## chemistry

Suppose f′′(x)=−36sin(6x) and f′(0)=−5, and f(0)=−3 f(π/3)=?

*asked on November 18, 2016* -
## chemistry

Suppose f′′(x)=−36sin(6x) and f′(0)=−5, and f(0)=−3 f(π/3)=?

*asked on November 18, 2016* -
## Chemistry

An unknown metal has a mass of 4.67g. It is heated to 95.1 C and then placed in a calorimeter that contains 24.3g of water at 21.7 C. The metal and water both reach a final temperature of 24.6 C. What is the specific heat of this metal? What is the unknown

*asked on November 16, 2016* -
## chemistry

Suppose 5 ∫ f(x)dx=6 ∫ 2 3 ∫ f(x)dx=1 ∫ 2 5 ∫ f(x)dx=4 ∫ 4 4 ∫ (6f(x)−1)dx= ? ∫ 3 help, please? I got the answer of 5, but it says its wrong

*asked on November 11, 2016* -
## math

identify the situation that each graph could represent

*asked on October 16, 2016* -
## math

find the function rule x -2 -1 0 1 2 y 9 4 -1 -6 -11

*asked on October 15, 2016* -
## Calc I (@Reiny)

y = x^3 - 8x^2 + 6x -2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^2-16x+6 3x^2-16x+6=6 3x^2-16x=0 x(3x-16)=0 Solve for x's x=0 3x-16=0 ~> x=16/3 Plug

*asked on October 10, 2016* -
## Calc I (@Reiny)

y = x^3 - 8x^2 + 6x -2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^2-16x+6 3x^2-16x+6=6 3x^2-16x=0 x(3x-16)=0 Solve for x's x=0 3x-16=0 ~> x=16/3 Plug

*asked on October 10, 2016* -
## Calculus I

y = x^3 - 8x^2 + 6x -2 has a slope of 6 at two points, what are the coordinates? I did the power rule to derive the equation: y'= 3x^2 - 8x + 6 , and then I tried to factor it to find the x intercepts but it doesn't work. But anyway, my point of confusion

*asked on October 10, 2016* -
## english

There is a text named Adolescent Confusion by Maya Angelou, and I have to write a paragraph about : Most teenagers are, at times, as impulsive and unthinking as Angelou was. Write a narrative about a time during your teenage years when you did something

*asked on September 24, 2016* -
## algebra 1

list from least to greatest square root 7, square root 3,-0.3,-7/4,0.1

*asked on September 20, 2016* -
## physics

A particle B of mass 10g is shot vertically upward from a point O with velocity 10m/s. The horizontal plane containing O is the reference level of the gravitational potential energy .Neglect all air effects. a) Calculate the mechanical energy of the system

*asked on September 19, 2016* -
## Communication Arts

Viewed through a telescope, the planet Mars looks rust-red because rust is a large component of its soil. Is this proper grammar??

*asked on September 2, 2016* -
## Communication Arts

Grammar check please!!! Georgia O'Keefe was an American painter from Wisconsin. Whose detailed close-ups of flowers brought her world renown.

*asked on September 2, 2016* -
## Math

If 18 gallons of gas costs X dollars what is the expression to represent the cost in dollars of 3 gallons

*asked on July 13, 2016* -
## Algebra

the width w of a rectangular swimming pool is x-2. The area of the playground is x^3-5x^2+2x+8. What is an expression for the length of the playground. x^2+3x+4 x^2+3x-4 x^2-3x+4 x^2-3x-4

*asked on June 2, 2016* -
## algebra 1

Use the following statement to answer parts a) and b). One hundred raffle tickets are sold for $3 each. One prize is to be awarded. Raul purchases one ticket. a). Determine his expected value. b). The fair price of a ticket is?

*asked on May 25, 2016* -
## algebra

A survey of 70 Customers was taken at a bookstore regarding the types of books purchased. The survey found that 42 customers purchased mysteries, 34 purchased science fiction, 24 purchased romance novels, 18 purchased mysteries and science fiction, 12

*asked on May 25, 2016* -
## physics

what about a 5,000 kg truck rear-ends a 1200 kg car that has been traveling at 13 m/s, causing the truck to slow down from 14 m/s to 12 m/s and the car to speed up. What is the final velocity?

*asked on May 13, 2016* -
## physics

I need so much help, thanks in advance! Determine the gravitational energy of your 3kg physics binder a) relative to the table it sits on b) relative to the floor, 0.68 meters below the book c) relative to the floor 2.5 meters above the book

*asked on May 13, 2016* -
## physics

Two trains approach one another. Train A has a mass of 500,00 kg and is moving at 34.0 m/s. Train B has a mass of 350,00 kg and is moving at 42 m/s. They collide and stick together. What is the velocity and direction of the combined masses

*asked on May 13, 2016* -
## physics

A bat exerts force of 755N on a 320g ball that approaches the bat at 40 m/s and leaves at 64 m/s. How long was the ball in contact with the bat?

*asked on May 13, 2016* -
## math

Kate Davidson signed a simple discount note for $9,000. The discount rate is 5%, and the term of the note is 18 months. What is the annual percentage yield (APY)?

*asked on May 6, 2016* -
## math

Israel signed a simple discount promissory note for $15,000. The discount rate is 7.5%, and the term of the note is 120 days. What are Israel’s proceeds on the loan?

*asked on May 6, 2016* -
## math

Alicia borrowed $8,500 at 6% ordinary interest for 180 days. After 40 days, she made a partial payment of $2,000. After another 70 days, Alicia made a second partial payment of $2,000. What is the final amount due on the loan?

*asked on May 6, 2016* -
## math

Webster Digital received a promissory note of $8,000 for 9 months at 7% simple interest from one of its customers. After 4 months, the note was discounted at Bank of Aventura at a discount rate of 10%. What are the proceeds Webster Digital will receive

*asked on May 6, 2016* -
## math

What is the annual percentage yield (APY) of a simple discount note for $7,000 at a bank discount rate of 6%, for 3 months?

*asked on May 6, 2016* -
## algebra

the base of a triangle is (c+2) ft and the area is (2c^3+16) ft^2. what is the height? please help me i don't understand how to solve for the height.

*asked on May 4, 2016* -
## Math

what fraction of a pizza remains if Joe ate 4/5 of 1/2 a pizza

*asked on April 27, 2016* -
## American History please Help

The influx of new immigrants in the 1980s and 1990s motivated many native-born Americans to A.campaign to make English their state’s official language. B.push for bilingual education programs in public schools C.boycott businesses that gave jobs to

*asked on April 22, 2016* -
## American History

The results of the 2000 presidential election were difficult to determine because of A,Ralph Nader’s third-party candidacy b.both candidates being baby boomers c.voting irregularities in the state of Florida D.he Electoral College votes being evenly

*asked on April 22, 2016* -
## American History please Help

The initial impact of containment theory on Truman’s foreign policy can be seen in the president’s A,relationship with Yugoslavia’s Josip Tito. B.decision to intervene in the Greek civil war C,efforts to break the blockade of West Germany. D,offer to

*asked on April 20, 2016* -
## American History

Both Richard Nixon and Joseph McCarthy advanced their careers by A.Accusing political opponents of being Communist collaborators. B, Serving on the HUAC C, practicing the “multiple untruth” approach to interviewing witnesses D,collecting and

*asked on April 20, 2016* -
## American History

Joseph Stalin was motivated to sign a nonaggression pact with Hitler. A,the Soviets’ need for economic and military aid B.Stalin’s desire to gain control of Eastern Europe c.Stalin’s sense that he needed to preempt a Nazi invasion. D.The need for an

*asked on April 17, 2016* -
## American History

The decision by Great Britain and France to sign the Munich Accord with Germany was considered an act of. A,isolationism b.internationalism. C.appeasement d.neutrality. My answer is B

*asked on April 17, 2016* -
## American History

In the 1865 Mississippi Black Code what was the contracted penalty for intermarriage between a free negro and a white person? A .State annulment of the marriage B.Ten years in prison C.Life in prison D.The death penalty my answer is A

*asked on April 16, 2016* -
## American History

The economy rebounded in 1897 due to the A. economic policies of President McKinley. B.withdrawal of the Populists from national politics C.discovery of gold in Alaska D. Decline of the general price index. My answer is A

*asked on April 16, 2016* -
## Economics

You buy 100 shares of stock at $4.00 per share. You receive one dividend of 10 cents per share. You sell the stock 1 year later for $5.50 per share. The fee for selling the stock is $15.00. What is the total profit you made on the entire transaction?

*asked on April 11, 2016* -
## Economics

You have a credit card that charges 18% per year interest or 1.5% per month . You buy a tv for $1000 on the credit card but at the end of the month you only pay $100. You continue to pay $100 the next month. You pay the entire balance in the third month.

*asked on April 11, 2016* -
## American History

Need help on one more question Which region of the country was a beneficiary of deindustrialization during the 1970s? A. Northwest B. midwest C. Southwest . D Northeast My answer is D.

*asked on April 9, 2016* -
## American History

The goal of President Nixon’s foreign policy was to A.uphold democratic values and contain communism through the use of military force B.prevent South Vietnam from falling to communism, whatever the cost in American lives. C.achieve a stable balance of

*asked on April 9, 2016* -
## History

Which region of the country was a beneficiary of deindustrialization during the 1970s? A. Northeast B. Southwest . C. Midwest S,northwest My answer is Northeast

*asked on April 8, 2016* -
## History

Which region of the country was a beneficiary of deindustrialization during the 1970s? A . Northeast B. Northwest C, midwest D. southwest my answer is D southeast

*asked on April 7, 2016*