# Amanda

Newest questions and responses by Amanda-
## Math

If the universal set U = the set of all positive odd integers less than or equal to 11 and E = {1,3,5,7}, what is E'?

*asked on January 6, 2019* -
## Math

5 letters are typed, with repetition allowed. What is the probability that all 5 will be vowels? Write your answer as a percent. Round to the nearest hundredth of a percent as needed

*asked on November 19, 2018* -
## Science

5which of the following is a use for fossils founds in sedimentary rocks? A.interpreting past environments b.indication when the rock formed c.matching rocks of the same age found in different places d. all of the above 6 lava that cools so quickly that

*asked on October 19, 2018* -
## physics

A uniform disk with mass m = 9.42 kg and radius R = 1.31 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 315 N at the edge of the disk on the +x-axis, 2) a force 315 N at the edge of the disk

*asked on April 27, 2018* -
## Math

A park has a rectangular playground area that has a length of 66 feet and a width of 42 feet. the park departmen material to enclose the playground area?

*asked on April 17, 2018* -
## Math

Roman saves $500 each year in an account earning interest at an annual rate of 4% compounded annually. How much interest will the account earn at the END OF THE FIRST THREE YEARS? I think I am confusing simple and compounded interest. The answer I got was

*asked on April 12, 2018* -
## MATH- APR of a loan

The owner of an automobile repair center purchased new electronic diagnostic equipment for $12,000. He paid down and then paid 60 monthly payments of $242.81. Determine the APR of the loan to the nearest one-half of a percent.

*asked on April 9, 2018* -
## physics

4. A train car with mass m1 = 684 kg is moving to the right with a speed of v1 = 7.2 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 4.4 m/s. b) Now the same two cars are

*asked on April 7, 2018* -
## physics

A mass m = 17 kg is pulled along a horizontal floor with NO friction for a distance d =5.4 m. Then the mass is pulled up an incline that makes an angle θ = 32° with the horizontal and has a coefficient of kinetic friction μk = 0.36. The entire time the

*asked on March 31, 2018* -
## physics

A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it

*asked on March 23, 2018* -
## physics

A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough

*asked on March 20, 2018* -
## physics

A mass m = 14 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4884 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is μk = 0.52. The mass leaves the spring at

*asked on March 17, 2018* -
## Algebra

Find the exact value of sin(u/2), cos(u/2), and tan(u/2) using the half-angle formula, given that cscu = -5/3 and π < u < 3π/2

*asked on February 18, 2018* -
## physics

You spot a plane that is 1.63 km north, 2.3 km east, and at an altitude 5.2 km above your position. 1) At what angle from due north (in the horizontal plane) are you looking? ( ) °E of N 2) Determine the plane's position vector (from your location) in

*asked on February 17, 2018* -
## physics

You spot a plane that is 1.63 km north, 2.3 km east, and at an altitude 5.2 km above your position. 1) How far from you is the plane? 2) At what angle from due north (in the horizontal plane) are you looking? 3) Determine the plane's position vector (from

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

Rewrite the following vectors in terms of their magnitude and angle (counterclockwise from the +x direction). 1) A displacement vector with an x component of +9.5 m and a y component of -9.6 m. magnitude: 2) angle: 3) A velocity vector with an x component

*asked on February 13, 2018* -
## pre-calculus

A pilot wishes to fly on course 290 with an air speed of 300 knots when the wind blows from 224 at 18 knots. Find the drift angle to the nearest hundredth of a degree.

*asked on February 12, 2018* -
## physics

A blue ball is thrown upward with an initial speed of 21.0 m/s, from a height of 0.8 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.3 m/s from a height of 24.6 meters above the

*asked on February 11, 2018* -
## physics

1) The figure below shows the position of a particle versus time, with each line on the vertical axis representing 4.6 m. Find the average velocities for the time intervals a, b, c, and d indicated in the figure. 1. ___________ m/s (time interval a) 2)

*asked on February 11, 2018* -
## SCIENCE

SOME ONE PLEAS HELPPPP MEEE The breaking down or disintegration of substances such as rocks and minerals by physical, chemical, or biological processes is called- * 1 point A Erosion C Climate D Deposition 2. When particles carried by water, ice, or wind

*asked on January 10, 2018* -
## algebra 1

Soda is on sale for $0.75 a can, and you have a coupon for $0.50 off your total purchase. write a function rule for the cost of n sodas, how much would 10 sodas cost? A.C(n)=0.5n-0.75;$4.25 B. C(n)=0.75n-0.5;$7.00** C C(n)0.5n-0.5;$4.50 D C(n)=0.75n;$7.50

*asked on December 19, 2017* -
## algebra 1

Suppose that the function f(x)=6x+4 represents the number of cars that drive by in x minutes. how many cars will drive by in 10 minutes? A. 60 B. 100** C.46 D.64

*asked on December 19, 2017* -
## U.S history

Which of he following was an effect of the Missouri compromise ? A. Western Territories could only enter the union if they permitted slavery B. There were more senators in Congress from Free states then slave states C. Missouri enter the union as a slave

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

A square playground has an area of 1500 ft.² Find the length of one side of the playground to the nearest 10th of a foot

*asked on November 1, 2017* -
## Maths set

There 70 women in a club. 20 play volley ball only ,10 play basketball only , 6 play tennis ball only. 4 play all the games and an equal number play two games only. Illustrate this information in a Venn diagram. Find the number of women who play

*asked on October 28, 2017* -
## Science

Why does pressure change with elevation and depth

*asked on October 24, 2017* -
## math

$4600 at 6% annual interest for a year. How much would he pay

*asked on October 23, 2017* -
## math

hat is the range of the scores for Craig? _____ Team | Bowling Scores Member | Game 1 | Game 2 | Game 3 Bob | 92 | 118 | 105 Craig | 127 | 101 | 96 Kim | 131 | 128 | 122 Nancy | 127 | 109 | 115 Phillip| 113 | 109 | 122

*asked on October 16, 2017* -
## math

Hi again. I don't understand these two questions so um please help me. Also explain me how to do it. Please 1. An electrician charges $40 to come to your house. She also charges $55 for each hour that she works. The electrician charges you a total of $190.

*asked on September 25, 2017* -
## math

Simplify this expression. (3x+1/2) + (7x-4 1/2) How do you this? Thanks.

*asked on September 24, 2017* -
## English

Is this sentence complex compound or simple? The question is, when water evaporates from the sea it becomes fresh water

*asked on September 20, 2017* -
## Algebra

What is 4-y in a algebraic expression

*asked on August 29, 2017* -
## Algebra

Ann sleeps 8 hours per night. Write an expression for the number of hours Ann sleeps in n nights

*asked on August 29, 2017* -
## Calculus

The prompt for all of these question is "consider the function f(x) = sin^2(x)". Part A: Write the first four terms of the Maclaurin series for f(x). I assumed this implied non-zero terms, so I found x^2-(1/3)x^4+(2/45)x^6-1/315(x^8). I am fairly confident

*asked on June 2, 2017* -
## English

which of the following terms best describes the actions of the husband in the short story "another evening at the club?" *violent** *supportive *confused *patronizing

*asked on May 25, 2017* -
## Math

A soccer team won three fourths of its games. The team won 18 games. How many games did the team play?

*asked on May 12, 2017* -
## Psychology

Miranda is a 23 year-old female who presents with symptoms of anxiety. She is dressed in baggy clothes and appears to be very thin. Miranda states that she worries a lot about her weight. Her father is obese, and she says that she does not want “to end

*asked on May 8, 2017* -
## Math

You have a phone plan where mins are 25cents a piece you have a balance of 13.67 how many mins can you talk on the phone

*asked on May 3, 2017* -
## Physics 1401

An ideal meter stick is balanced on a pencil which is at the 60 cm mark. A 6 gram mass sits at the 90 cm mark. What is the mass of the meter stick? Again, I have the answer and it is 18g. I have no clue where to even begin with this questions. Thank you in

*asked on May 1, 2017* -
## Physics 1401

An ideal meter stick is balanced on a pencil which is at the 60 cm mark. A 6 gram mass sits at the 90 cm mark. What is the mass of the meter stick? Again, I have the answer and it is 18g. I have no clue where to even begin with this questions. Thank you in

*asked on May 1, 2017* -
## Physic sucks 1401

An Atwood's machine is built from m1=1kg and m2=2kg. The massless string is passed over a frictionless massless pulley. When the system is released from rest, what is the tension in the string? The answer is 68, this is for my finals review And my

*asked on May 1, 2017* -
## Physics 1401

A 30 N object I a hung from a scale and dunked in water (density of 1000 kg/m^3), the measurement on the scale is only 20 N. what is the density of the object? Answer is 3000 kg/m^3, can someone show me how? Would be very appreciated.

*asked on April 30, 2017* -
## Precalculus - check answer

The rate of U.S. per capita sales of bottled water for the period 2000-2010 could be approximated by s(t) = −0.18t2 + 3t + 15 gallons per year (0 ≤ t ≤ 10), where t is time in years since the start of 2000. Use a Riemann sum with n = 5 to estimate

*asked on April 29, 2017* -
## Precalculus

The rate of U.S. per capita sales of bottled water for the period 2000-2010 could be approximated by s(t) = −0.18t2 + 3t + 15 gallons per year (0 ≤ t ≤ 10), where t is time in years since the start of 2000. Use a Riemann sum with n = 5 to estimate

*asked on April 28, 2017* -
## Precalculus

Find the area of the indicated region: Between y = x2 − 5x + 3 and y = −x2 + 5x − 5 for x in [0, 4]. I keep ending up with 16/3, but this is incorrect.

*asked on April 28, 2017* -
## Pre-Calculus

Annual sales of fountain pens in Littleville are 2,000 per year and are increasing by 10% per year. How many fountain pens will be sold over the next five years? Use an integral to solve this problem. I just need help setting the problem up - thank you!

*asked on April 27, 2017* -
## Physics 1401

An Atwood's machine is built from m1=1kg and m2=2kg. The mass less string is passed over a friction less, mass less pulley. When the system is released from rest, what is the tension in the string?

*asked on April 16, 2017* -
## chemistry

If you titrated 50 mL of HCl and 50 mL H2SO4, each of the same molarity, with NaOH. What is the numerical ratio of the volume of NaOH required for HCl compared to that for H2SO4?

*asked on April 12, 2017* -
## Chemistry

Oxalic acid , HOOCCOOH (aq) , is a diprotic acid with Ka1= 0.0560 and Ka2=0.0145. Determine the [-OOCCOO-] in a solution with an initial concentration of 0.139 M oxalic acid. HOOCCOOH(aq) = HOOCCOO-(aq) + H+(aq) HOOCCOO-(aq) = -OOCCOO-(aq) + H+(aq) I have

*asked on April 12, 2017* -
## Chemistry

Oxalic acid , HOOCCOOH (aq) , is a diprotic acid with Ka1= 0.0560 and Ka2=0.0145. Determine the [-OOCCOO-] in a solution with an initial concentration of 0.139 M oxalic acid. HOOCCOOH(aq) = HOOCCOO-(aq) + H+(aq) HOOCCOO-(aq) = -OOCCOO-(aq) + H+(aq) I have

*asked on April 12, 2017* -
## Chemistry

Please help. I have tried this a few different times and have come up with the same answer. What is the pH of the solution if 0.01 of HCl is added to a buffer containing 0.013 mol of RCOOH and 0.035 mol of RCOONa (source of RCOO-)? Ka = 2.7E-5 so far i

*asked on April 4, 2017* -
## Precalculus - check

Find the derivative of the function. r(t) = log_4(t + sqrt(t)) My answer (sorry, it's messy): (1+(1/2sqrt(t)))(1/tln(4)+sqrt(t)ln(4))

*asked on April 2, 2017* -
## Precalculus

An offshore oil well is leaking oil and creating a circular oil slick. If the radius of the slick is growing at a rate of 4 miles/hour, find the rate at which the area is increasing when the radius is 7 miles. (The area of a disc of radius r is A = πr2.)

*asked on April 1, 2017* -
## Precalculus

If f and g are functions of time, and at time t = 3, f equals 8 and is rising at a rate of 3 units per second, and g equals 5 and is rising at a rate of 8 units per second, then the product fg equals __ and is rising at a rate of __ units per second. I got

*asked on March 29, 2017* -
## Statistics

Consider the population (1,3). Suppose you take all possible samples of size n=3 with replacement. What is the sampling distribution of the sample total?

*asked on March 26, 2017* -
## Statistics

The weight of a randomly selected shipping container follows an unknown distribution with mean 12 tons and standard deviation 2 tons. Your cargo ship always carries a load of 100 randomly selected shipping containers. a. What is the probability the load

*asked on March 26, 2017* -
## Statistics

LED light bulbs are manufactured with an average life span of 16 years and the bulb lifespans are known to follow an exponential distribution. a. What is the probability that a bulb will last longer than 14 years? b. What is the 50th percentile (or median)

*asked on March 26, 2017* -
## Precalculus

Johnny's Tumblers sells plastic cups in bulk for start-up restaurants. Their cost for producing these is modeled by: c(x) = 0.02x^2 + 0.5x + 40 a) Since the marginal cost is found by taking the derivative, the formula for c'(x)= ? (My answer: 0.04x + 0.5)

*asked on March 24, 2017* -
## Precalculus

Evaluate the given expression: d/dx[5(x^2 + 3|x|)] Any help with this is appreciated!

*asked on March 22, 2017* -
## Chemistry

I am having trouble getting the right answer for this question please help. Calculate Kc for the FeSCN2+ formation equilibrium [FeSCN2+] = 3.49x10^-5 M [Fe3+] = 4.39x10^-4 M [SCN-] = 1.93x10^-4 Kc = [FeSCN2+] / ([Fe3+]-[FeSCN2+]) * ([SCN-] - [FeSCN2+]) I

*asked on March 21, 2017* -
## Chemistry

what mass of h2o is formed when h2 reacts with 384g of o2?

*asked on March 10, 2017* -
## Chemistry

Use the concentrations and volumes of hydrogen peroxide and KI before mixing (Table 1), calculate the post-mixing concentrations. Before mixing: [H2O2] = 0.88M [KI] = 0.500M Table 1: before mixing 1. Vol H2O2 = 4.0 mL, [H2O2] = 0.88M 2. Vol KI = 1.0 mL,

*asked on February 28, 2017* -
## Chemistry

Calculate the expected freezing point of a solution of 0.579 g pelargonic acid in 4.225 g of lauric acid, if the melting point of pure lauric acid was measured to be 43.20*C. (MM pelargonic acid = 158.2 g/mol; MM laruic acid = 200.32 g/mol). Kf for lauric

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

Element X has a face-centered cubic unit cell structure. If the density of the element is measured to be 12.4 g/cm^3, what is the atomic radius of X? units are in pm (picometers) I can't seem to find how to get the atomic radius with only the density given

*asked on February 11, 2017* -
## Science

If one sound registers one decibel more than another, then it is ____ times as intense? Round your answer to three decimal places.

*asked on February 9, 2017* -
## Math

I have 100 bucks to buy 100 fruits. The fruits which I need to buy are- mango; which is 20 piece for 1 buck, lichi; which is 1 piece for 1 bucks and coconut; which is 1 piece for 5 bucks. How many each of those fruits do I have to buy to get this

*asked on February 5, 2017* -
## Math

I have 100 bucks to buy 100 fruits. The fruits which I need to buy are- mango; which is 20 piece for 1 buck, lichi; which is 1 piece for 1 buchan and coconut; which is 1 piece for 5 bucks. How many each of6the fruits do I have to buy to get this result-100

*asked on February 5, 2017* -
## math

Richard is 6 years older than Lisa, and in 5 years the sum of their ages will be twice as much as the sum of their ages 4 years ago. Find their present ages.

*asked on January 21, 2017* -
## Math

Can someone please help me with my open needed question Solve the system by substitution -X-y-z= -8 -4+4y+5z =7 2X+2z= 4

*asked on January 17, 2017* -
## maths trigonometry

Expand the following using compound angle formulae Sin(m-n) Cos(p-55)

*asked on January 16, 2017* -
## Government

I need help on these two questions these are my answers. The U.S Congress is a bicameral branch of government in which each state A) Is represented based on population in the House of Representatives and is equally represented in the Senate B) Elects

*asked on January 15, 2017* -
## Math parallel lines and angles

1.Find the mesure of

*asked on January 11, 2017* -
## math

The angle of an elevation of the top of a radio mart from a point 53meter from its base on ground level is 61degrees ,find the height of the mart to the nearest whole number.

*asked on January 7, 2017* -
## Maths fractions

41/2 x ?=111/4 They're mix numbers.

*asked on December 16, 2016* -
## English

Who is miss Lucas and Mrs Hurst in pride and prejudice?

*asked on December 14, 2016* -
## Maths algebra

I wrote 47.235 as my answer then it asked me to use the calculator to find a complete answer.How I'm I suppose to do this. please I need help I got a test tomorrow. Thank-you.

*asked on December 14, 2016* -
## Maths

A median of a number is 5. A mean is 5. They're five different numbers. They're not integers. Workout the numbers. Please help me I got a test tomorrow please!:)

*asked on December 14, 2016* -
## science

Gravitational force =mass x 9.8m/s2 what is the force of a polar bear weighing 1500kg?

*asked on December 5, 2016* -
## Business Psychology

The CEO of a multinational manufacturing company, with its headquarters in the UK, is considering aligning its organisational culture across all of its sites of operation. Currently, other than the UK, these are located in the US, Japan, and Finland.

*asked on November 29, 2016* -
## Chemistry

How many moles of air must be pumped into a 4.8 L tire to give it the pressure of 47.1 psi at 25°C ? I'm not sure how to even start doing this problem.

*asked on November 22, 2016* -
## Physics

A bar of length 2L can rotate about a frictionless axle at its center. The bar is initially at rest and is then acted on by the three forces shown. What is the magnitude of the net torque on the bar?

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

Identify the subject, object, and verb in this sentence: Paralegals must have good ethics.

*asked on November 9, 2016* -
## business statistics

1. The average life expectancy of people around the world is 71.30 years with a population standard deviation of 8.00 years. I take a sample of 50 countries now and find that the average life expectancy is 74.37 years. Suppose I’m interested in seeing if

*asked on November 7, 2016* -
## Statistics

Need help with this statistics assignment. Of course not asking for you to do it, just an example or help on how to answer. Find some information in a book, research article, newspaper, magazine, or online about any kind of medical research that includes a

*asked on November 7, 2016* -
## Biology

Has anyone done the effect of cell size on material transport portfolio in Connections academy?

*asked on October 28, 2016* -
## Math Check Answers

Write a rule for the function represented by the table. x y 0 13 1 28 2 43 3 58 y= 15 + 13x y= 14 + 12x y= 13 + 15x** y= 12 + 14x Which function rule would help you find the values in the table? j k 2 -12 4 -24 6 -36 8 -48 k= -12j k= -6j** k= j - 12 k= j -

*asked on October 24, 2016* -
## Math Check Answers

Write a rule for the sequence 8 -1 -10 -19... Start with 8 and add -9 repeatedly** Start with-9 and add 8 repeatedly Start with 8 and add 9 repeatedly Start with 8 and subtract -9 repeatedly Find the next three terms of the sequence. -4 -8 -16 -32... -96

*asked on October 24, 2016* -
## Chemistry

A hypothetical pure element consists entirely of two isotopes. The natural percent abundance of the isotope with mass 25.5 u is 78.8 percent. The other isotope has mass 29.5 u. Calculate the atomic weight of the naturally occurring element.

*asked on October 17, 2016* -
## I am having trouble with this homework question ,

Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type O A B AB Probability 0.53 0.21 0.03 0.23 What is the probability that a randomly chosen American does not have type O blood? % Round to the

*asked on October 1, 2016* -
## MATH HELP ASAP

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 18 16 8 42 Female 7 17 9 33 Total 25 33 17 75 If one student is chosen at random, Find the probability that the student was NOT a female that got a "A"

*asked on October 1, 2016* -
## MATH 125 help

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 4 17 20 41 Female 15 7 19 41 Total 19 24 39 82 If one student is chosen at random, Find the probability that the student did NOT get an "B"

*asked on October 1, 2016* -
## Math Help ASAP SETS & Probability

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 2 10 17 29 Female 7 15 4 26 Total 9 25 21 55 If one student was chosen at random, find the probability that the student got a C.

*asked on October 1, 2016* -
## Probability Help ASAP!

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 17 5 2 24 Female 7 11 12 30 Total 24 16 14 54 If one student was chosen at random, find the probability that the student was female.

*asked on October 1, 2016* -
## Probability

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 8 10 12 30 Female 4 11 3 18 Total 12 21 15 48 If one student was chosen at random, find the probability that the student got an A.

*asked on October 1, 2016* -
## Cards Probability

As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color is split into two suits of 13 cards each (clubs and spades are black and hearts and diamonds are red). Each suit is split into 13 individual cards (Ace,

*asked on October 1, 2016* -
## PROBABILITY : M&M'S

A BAG OF M&M'S HAS 3 RED, 7 GREEN, 6 BLUE AND 5 YELLOW M&M'S . WHAT IS THE PROBABILITY OF RANDOMLY PICKING.

*asked on October 1, 2016* -
## Math

Convert the given exponential function to the form indicated. f(t) = 2.7(1.004)^t --> f(t) = Q0e^kt I'm not even sure where to start with this one - any help would be greatly appreciated.

*asked on September 29, 2016* -
## Math - check answer

Frogs have been breeding like flies at the Enormous State University (ESU) campus! Each year, the pledge class of the Epsilon Delta fraternity is instructed to tag all the frogs residing on the ESU campus. Two years ago (t = 0) they managed to tag all

*asked on September 21, 2016* -
## algebra 1

I need to solve this inequality 3(x-2)>-3

*asked on September 19, 2016* -
## College Algebra

A manufacturing company finds that they can sell 375 items at $2.50 per item and 225 items at $3.50 per item. If the relationship between the number of items sold x and the price per item p is a linear one: Find a formula that gives x in terms of p: x= Now

*asked on September 15, 2016*