# sara

Newest questions and responses by sara-
## Math

The question says using the formula P with a small n below it(Pn) Pn=PMT(1-(1+i)^-n/i) the full parenthesis is divided by the I just to be clear Pn=present amountborrowed n=number of monthly pay periods PMT=monthly payment i=interest rate per month A)

*asked on March 10, 2019* -
## math

solve the equation below algebraically and express the result in simplest radical form 13/x=10-x I did 13/x=10-x multiplied each side by x and then subtracted 13 to get 0=13-(10x-x^2) x^2-10x+13=0 x=(10+/- square root of 100-52)/2 x=(10=/- 4square root 3)

*asked on March 10, 2019* -
## math

If g(x)=(ax square root of 1-x)^2. Express g(10) in simplest form I did g(10)=(a(10) square root 1-10)^2= (a*10)^2(1-10)=1000^2(-9)= -9000^2 Is this correct? thanks for checking my work

*asked on March 10, 2019* -
## math

which ordered pair is in the solution set of the system of equations shown below? y^2-x^2+32=0 3y-x=0 I did y^2-3y^2+32=0 y^2-9y^2=-32 8y^2=32 y^2=32/8 y^2=4 y=+/-2 x=3(2)=6 {2,6} is this right? thank you

*asked on March 9, 2019* -
## math

solve algerbraically for x log27(2x-1)=4/3 I did 2x-1=27(4/3) 2x-1=3^4 2x=82 I got x=41 does this look right? thank you

*asked on March 9, 2019* -
## Math

The question is the expression (m^2/m^1/3)^-1/2 is equivalent to: I did (m^5/3)^1/2 m^-5/6 1/m^5/6 so my answer is 1/ the 6th root m^5 sorry I don't know how to print a square root symbol. Is this correct? Thank you for checking my work

*asked on March 9, 2019* -
## Maths .lifescince. Tourism . geography L.o

How can sport destract nation building

*asked on March 9, 2019* -
## math

the question is find the sum of the first eight terms in the series 3-12+48-192+... is 1)-13,107 2)-21,845 3)-39,321 4)-65,535 I got that a1 is 3 and a8 was -49152. I wanted to make sure this was a geometric sequence with a r of -4 and tat the + didn't

*asked on March 8, 2019* -
## math

find the equation of the inverse of f(x)= 2^x-7 + 5 I did x=2^y-7+ 5 -5 -5 x-5=(2^y)(2^-7) 128*x-5=2^y answer y=log of 2 (128(x-5)) I switched x and y and solved for y Is this correct? Thanks for checking my work.

*asked on March 3, 2019* -
## Algebra 2

solve for x: 3^2x+3=7^x+1 I did 2x+3=log0f3(7)+ logof3(7) (2-log of 3(7))x=log of 3(7)-3 x=log of 3 (7)+log of 3 (3^-3)/log 0f 3 (3^2)-log of 3 (7) x=log of 3 (7-1/3^3)/log of 3(9/7) log of 3(7/27)/log of 3(9/7) answer log of 9/7(7/27) Is this correct?

*asked on March 3, 2019* -
## algebra 2

Which is equivalent to y=log of 7(x) a)y=x^7 b)x=y^7 c) x=7^y d) y=x^1/7 I thought the answer was c x=7^y Is this correct? thank you

*asked on March 3, 2019* -
## Physics

Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that

*asked on March 3, 2019* -
## Math

GEOMETRY 7TH GRADE You asked • 7m I need to understand this given statement in more depth. Please help. Two rectangles with a length to width ratio of 1 to 4.

*asked on February 15, 2019* -
## english

what would be some indirect and direct impacts to my family (live in Canada) due to the ethical issue of pharmaceutical companies and the conflict over making HIV/AIDS drugs available in poor countries ? I dont know if there would be many direct impacts

*asked on February 15, 2019* -
## english

I have to conduct a team task anaylsis, cognitive task analysis and task analysis of my job as being a student? Im not sure how to do this. I have already thought of all related behaviours and duties for each but again can anone give me an example? or

*asked on February 5, 2019* -
## Science

1 kg of N2 is mixed with 3.5 m^3 of H2 at 300k,101.3kpa and sent to ammonia converter , product analysed 13.7℅ NH3,70.32℅H2,15.98℅ N2 find ℅ conversion, ℅excess

*asked on January 30, 2019* -
## Physics

Two points, P and R, are equidistant from the positively charged object, A. They are on opposite sides of the charged object. Is the electric field at point R equal in magnitude and direction when compared to point P? Or is it equal in magnitude but

*asked on January 26, 2019* -
## Math

The polynomial expression: (1/16x^2 + 1/3x + 4/9) can be written in the form (Ax+b)^2. The value of the product, AB, to the nearest one hundreth, is____?

*asked on January 17, 2019* -
## math

x-21/(x^2-9) - x/(3-x) so I did x-21/((x-3)(x+3)) - x/-(x-3) x-21+x(x+3)/((x-3)(x+3)) x-21+x^2+3x/((x-3)(x+3)) 4x-21+x^2/((x-3)(x+3)) x^2+4x-21/((x-3)(x+3)) x(x+7)-3(x+7)/((x-3)(x+3)) (x+7)(x-3)/((x-3)(x+3)) the x-3 cancel out so the answer is x+7/x+3 is

*asked on January 5, 2019* -
## Math

1/x^2+3x+2 + 2/x^2-1 I first did 1/x^2+2x+x+2 +2/(x-1)(x+1) 1/x(x+2)x+2 +2/(x-1)(x+1) 1/x+2(x+1) +2/(x-1)(x+1) x-1+2(x+2)/(x+2)(x-1)(x+1) x-1+2x+4/(x+2)(x-1)(x+1) 3x+3/(x+2)(x-1)(x+1) 3(x+1)/(x+2)(x-1)(x+1) the x+1 cancel out so 3/(x+2)(x-1) 3/x^2-x+2x-2

*asked on January 5, 2019* -
## Math

The problem is… 8X^4/25-9x^2• 3X^2- 8X+5/x^2-1~4x^3/x^2+2x+1 NOTE: I used~ to equal a division symbol So I did 2x/-(3x-5)(5+3x)•3x(x-1)-5(x-1)/(x-1)(x+1)•(x+1)^2 2x/-(3x-5)(5+3x)•(x-1)(3x-5)/(x-1)(x+1)•(x+1)^2 2x/5+3x•-1(x+1) -2x^2+2x/5+3x Is

*asked on January 4, 2019* -
## History

Can you help me find a war that is currently going on in the world and 5 reasons why?

*asked on December 19, 2018* -
## math

Project - would you please check my answers? I am working on a project and my linear equation came out to be: y = 1502.9x - 2847386 This project is about waste and recycling so the equation came from a table that gave a few years and the tons of waste in

*asked on December 5, 2018* -
## Physics

A pitcher throws a fastball during a ballgame. The velocity of the ball is 44 m/s. The mass of the ball is 150 grams. The catcher catches the ball in his glove at 0.2 seconds. a) Compute the impulse the glove exerts catching the ball. I'm lost on part a.

*asked on November 11, 2018* -
## math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 so I now got (6,3) when doing it over again. I now got so vertex is (6,3), focus is (6,7) and directrix = y=-1 Is these corrections now right? Thank you for

*asked on October 21, 2018* -
## math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 (6,3) so vertex is (6,3), focus is (6,-1) and directrix = y=7 Is this correct?

*asked on October 21, 2018* -
## math

a baseball is hit straight up from a height of 6 feet with an initial velocity of90 feet per second. given the equations=-16t^2 +v0t + s0, that models the height of the ball,s, as a function of time ,t where the initial height of the ball is s0 and the

*asked on October 21, 2018* -
## math

Which of the following could identify the transformation of a parabola with a vertex of (-4,-6) to a parabola with a vertex of (1,-6) 1) f(x)+5 2) 5f(x) 3) f(x+5) 4) f(x-5) I added the two x values. so you will need to add 5 to transform it. my choice is

*asked on October 21, 2018* -
## math

The initial cost for attendance to carnival A is $12and each ride costs $2. The initial cost for attendance to carnival B is $16 and each ride cost $1.50. a) in function notation write A(x) to represent the total cost of attending carnival A and going on x

*asked on October 21, 2018* -
## math

This question has a few parts to it. I tried but not sure if they are correct. A boy standing on top of a building in Albany throws a water balloon up vertically. The height (h) in feet, of the water is given by the equation h(t)=-16t^2+64t +192. where the

*asked on October 21, 2018* -
## math

The factors of X^4-13x^2+36 when factored completely are I did x^2(x^2-4)(x^2-9) (X+3)(x-3)(x+2)(x-2) it was multiple choice 1. (x^2+9)(x^2+4) 2. (x^2+9) (x+2)(x-2) 3. (X+3)(x-3)(x+2)(x-2) 4. (x+3)(x+3)(x+2)(x+2) my answer is choice 3. Thanks for checking

*asked on October 20, 2018* -
## math

In order to successfully perform a trick, a flying trapeze artist must swing along a parabolic path that is equidistant from the floor and the pivot point where the trapeze rope is attached. The rope is attached at the ceiling 8 feet above her starting

*asked on October 20, 2018* -
## math

The expression X^2(x+3)-9(x+3) is equivalent to (x+3)^n(x-3) when n equals? I got an answer of 2 I did X^2(x+3)-9(x+3) (x+3)^n(x-3) 4(5)-9(5)=-25 -25=(5)^n(-1) n=2 Is this correct? Thank you for checking my work

*asked on October 20, 2018* -
## Chemistry

Restart the PhET simulation and set it up in the following manner: select Oscillate, select No End, and use the parameters in parentheses by sliding the bars for Amplitude (1.00 cm), Frequency (1.20 Hz ), Damping (none), and tension (highest). Using the

*asked on October 18, 2018* -
## math

If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps

*asked on October 11, 2018* -
## Math- algebra 2

If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps

*asked on October 10, 2018* -
## linear algebra

Let T be the plane 2x−3y = −2. Find the shortest distance d from the point P0=(−1, −2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I need help with this

*asked on October 2, 2018* -
## linear algebra

Let T be the plane −x+2y = 4. Find the shortest distance d from the point P0=(2, 2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I know I have posted this many

*asked on October 1, 2018* -
## linear algebra

Let L be the line passing through the point P=(−3, −1, −5) with direction vector →d=[4, 0, 4]T, and let T be the plane defined by 4x−y−3z = 16. Find the point Q where L and T intersect. please help..

*asked on September 30, 2018* -
## Linear Algebra

Let T be the plane −y+2z = −8. Find the shortest distance d from the point P0=(−5, 4, 2) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. d = 0 Q = (0, 0, 0)

*asked on September 30, 2018* -
## Math

A rectangular plot of land that has an area of 1200 sq. ft, will hold a rectangular garden whose length is 8' more than twice the width, and will be bordered by a 3' wide sidewalk for pedestrians. Write a function that describes the area of the garden with

*asked on September 23, 2018* -
## social studies

What is the Babylonian King Hammurabi most remembered for today? A. his code of law B. his great wealth C. his military conquests D. his public works projects

*asked on September 21, 2018* -
## English

Hello, is this sentence grammatically correct? The lecturer explained to us how greenhouse gases come about, and we soon wondered what we could do to forestall disaster.

*asked on September 10, 2018* -
## chemistry

what is the number of molecules of c2h6o required to have 135 atoms in total?

*asked on September 8, 2018* -
## english-sentence

is this sentence correct? I have a loving two year old son, whom can sometimes be a handful.

*asked on August 29, 2018* -
## math

Two cars are side by side. One is 3.9 meters long. The other is 6% shorter. How long is the second car? I know the answer is 3.7, but how?

*asked on June 25, 2018* -
## Organic Chem

what is the pka of anhydride? i've searched the whole web and can't seem to find the pka of the functional group.

*asked on May 8, 2018* -
## Chemistry

Calculate molarity 9.8g r 500 ml

*asked on April 8, 2018* -
## Calculus

Consider the functions A(x, y) = x^2y + xy − 3xy^2, and B(x, y) = xe^xy − y. (a) Calculate the x derivative of A, or Ax. (b) Calculate the y derivative of A, or Ay. (c) Calculate the x derivative of B, or Bx. (d) Calculate the y derivative of B, or By.

*asked on April 2, 2018* -
## math

Christina finances a piano for $3,070 by taking out an installment loan for 24 months. The payments were $153.50 per month and the total finance charge was $614. After 14 months, Christina decided to pay off the loan. After calculating the finance charge

*asked on March 13, 2018* -
## math

Scott purchases a piano costing $2,630 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 5 years. How much are Scott's monthly payments?

*asked on March 13, 2018* -
## math

You purchase a hot tub costing $4,600 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 4 years. How much are your monthly payments?

*asked on March 13, 2018* -
## Math

Given that g is the inverse function of f, and f (3) = 4 , and f ′(3) =5 , then g′(4) = -1/5 -3/5 3/5

*asked on February 25, 2018* -
## physics

Determine the x and y components of the following three vectors in the xy plane. 1) A 19-m/s velocity vector that makes an angle of 40° counterclockwise from the -x direction. x: 2) y: Explain please!

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

hydrobromic acid (50.5) calculate the concentration in mol/L. (MW HBr: 80.91 g/mol, density: 1.49 g/mL)

*asked on February 16, 2018* -
## Computer science C++

3. After following statements have executed, find the value of the variable a. int a=5; while (a

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

Jason was hired to mow a lawn that covers an area of 2 3/4 acres it took him 4 1/8 hours to complete the job what was his unit rate and hours per acre you multiply the numerator and a complex fraction by the reciprocal of the denominator to calculate our

*asked on February 7, 2018* -
## math

An object is dropped from a balloon 3600 feet above the ground. Find the time it takes to reach the ground if the height of the object is given by the equation h(t) = –16t^2 + 3600

*asked on February 5, 2018* -
## Math

The length of a rectangle is three times as long as its width. Its area is 675 square feet. a. Write an equation that demonstrates the given information. b. Find the dimensions of the rectangle.

*asked on February 5, 2018* -
## history

Which of the following best applies to religion in the High Middle Ages? 1. Pilgrimages to holy shrines declined as the practice of indulgences increased 2. The Bible was translated and widely read in the vernacular (every day, spoken) languages 3. The

*asked on January 22, 2018* -
## math

Determine whether ∆QRS is a right triangle for the given vertices. Explain. Q(18, 13), R(17, –3), S(–18, 12)

*asked on January 19, 2018* -
## History

1. In the Lindisfarne Gospels, what symbol represents St. Mark? (The Winged lion?) 2. In the Lindisfarne Gospels, who is the only evangelist who is pictured facing the reader directly? (I think its John) 3.In the Book of Kells, how many evangelists are

*asked on January 15, 2018* -
## math

Determine whether ΔGHI is a right triangle. G(-2, 1), H(3, -1), I(-4, -4). Can you please show the steps too? Thank you!

*asked on January 14, 2018* -
## history

Which European country was controlled by Muslims throughout the Middle Ages, and what year did Christian rulers finally take power away from the Muslims?

*asked on December 18, 2017* -
## math

The vertices of a triangle are L(1,3), M(4,0), N(-4,1) LO is a median of the triangle. What are the coordinates of point O? Explain.

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

The value of Sara's new car decreases at a rate of 8% each year. 1.Write an exponential function to model the decrease in the car's value each month. 2.Write an exponential function to model the decrease in the car's value each week. 3.Write an exponential

*asked on November 17, 2017* -
## English

How to re-word this please? The Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016 will be considered by the House on Wednesday, December 7. under the rules. S. 2854 was proposed on April 26, 2016, by Senator. Richard Burr Republican of

*asked on November 8, 2017* -
## English

How can I re-word this to start my summary ? On Wednesday, December 7, 2016, the House will consider S. 2854, the Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016, under suspension of the rules. S. 2854 was introduced on April 26, 2016,

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

Give the domain and range of the following functions: f(x) = 1⁄4x – 7 g(x) = 3x2+ 2

*asked on October 20, 2017* -
## math

-2/5x-9

*asked on October 18, 2017* -
## Exponential and Logarithmic functions

A certain material decays at a rate of 1.9% per year. The sample is 260 grams. How much will be left in 11 years? How long will it take to have only a 100g sample left?

*asked on October 11, 2017* -
## Opreating System

Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes

*asked on October 11, 2017* -
## Opreating System

Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes

*asked on October 10, 2017* -
## Math

For the following geometric sequence find the recursive formula and the 5th term in the sequence. In your final answer, include all of your work. {-4, 12, -36, ...}

*asked on September 29, 2017* -
## Biology

What is a protein that transports ions across the plasma membrane without requiring energy or changing shape?

*asked on September 12, 2017* -
## psychology

does someone know a good website that includes b.f. skinner in behavioral approach ,or just inform about him?

*asked on September 4, 2017* -
## MATH

A prism has a cross section that is a right angled triangle.its volume is 60 cm^3.What could the dimensions of prism be?

*asked on July 13, 2017* -
## maths

Aprism has a cross section that is a right angled triangle.Its volume is 6 cm^3.What could the dimentions of this prism be ? .....cmby..........cmby.....cm(2)

*asked on July 13, 2017* -
## Physics

an object of mass m is being weighed in an elevator that is moving upward with an acceleration a. What is the eesult if the weighing is done using a spring balance and a pan balance?

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

How would I go about solving y - 6 is greater than or equal to = 12?

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

y + 5 is equal to or greater than 7 Is y less than or greater than 12? Please check, and help correct.

*asked on May 26, 2017* -
## Math

x/4 + 1 = -6 I'm not sure the process to solve the equation, could I have help?

*asked on May 26, 2017* -
## physics

If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g.°C). °C (Answer a number only, no units. Round to the tenth place). This is an example of an endothermic or

*asked on May 22, 2017* -
## algerbra

can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the

*asked on May 22, 2017* -
## algerbra

can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the

*asked on May 21, 2017* -
## math

The question is: the table below lists the total cost for parking for a period of time on the street in NYC. The total cost for any time up to and including the hours parked. For example, parking up to and including 1 hour would cost $1.25; for 3.5 hours

*asked on May 21, 2017* -
## Algebra

I have a few of these questions that I need help on, please help me! 1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x 2. 2x^2 + 8 8 - 4x + 3x - 6x^2 + 7 3. 2x^2 = 6x - 7x +8 - 3x^2 + 1 5. (m^2 - m - 4) + (m - 5) 6. (5x^2 + x - 3) - (-2x^3 + 4) 9. 64^10/64^5 10.

*asked on May 20, 2017* -
## math

On the set of axes below, graph the function represented by y=cubed root of x-2 for the domain -6< or equal to x< or equal to 10. x column I did -6, 1, 2 , 3 ,10 y column I did -2, -1, 0, 1, 2 Then I plotted these points. Is this correct? Thanks for

*asked on May 20, 2017* -
## Math

An employee earns $200 for 14 hours work. Assuming he is paid by the hour, how much will this employee earn in 35 hours?

*asked on May 14, 2017* -
## math

my watch is twelve minutes slow .the bus for which I am waiting should have arrived at 3.49pm but it is five minutes late. What time would my watch show when the bus arrives?

*asked on May 7, 2017* -
## geometry

Find the lateral area of a regular square pyramid whose slant height is 20 and whose base has an edge length of 7

*asked on May 5, 2017* -
## statistics

Recent studies, as summarized, for example, in E. Mortensen et al. (2002). The association between duration of breastfeeding and adult intelligence. Journal of the American Medical !@#$%^& o ciation , 287 , 2365–2371, suggest that breast-feeding of

*asked on April 27, 2017* -
## Math

If

*asked on April 23, 2017* -
## Math

If

*asked on April 23, 2017* -
## statistics

The professor teaching a large introductory class gives a final exam that has alternate forms, A, B, and C. A student taking the exam using Form B is upset because she claims that Form B is much harder than Forms A and C. Discuss how percentile point data

*asked on April 22, 2017* -
## math

This is a multiple choice question. What is the solution of the equation 2(x+2)^2-4=28 1)2 only 2)6 only 3)-2 and 6 4)2 and -6 I did (2x+4)(2x+4)-4=28 4x^2+8x+8x+16-4=28 4x^2+16x+12=28 4x^2+16x=16 This is where I get stuck, can you help? thank you

*asked on April 22, 2017* -
## math

The equation d=0.12v^2 + 2.1v models the distance d in feet it takes a car traveling at a speed of v miles per hour to come to a complete stop. Graces car was able to stop after 350ft on a highway. If the speed limit in the area was 35 miles per hour, was

*asked on April 22, 2017* -
## Math

Michael can travel at 166.35mph in his Ferrari. How far can he travel in 5 hours?

*asked on April 22, 2017* -
## Math

Colin lived in Scotland and was going to take his caravan on holiday to France. On the first day he travelled 472.87 miles to Portsmouth. He got a ferry which travelled 73.92 miles. He then got off the ferry and drove 134.56 miles to the camp site. How far

*asked on April 22, 2017* -
## 9th grade English

Sam had to mix __________ parts of the two chemicals for the experiment. a. equaled b. equitably c. equal d. equate f. equation I pick C This seems to easy am I missing something?

*asked on April 21, 2017*