# AJ

Newest questions and responses by AJ-
## algebra

there is a cylinder perfume bottle the height is 12.4 cm the radius is 6.2 cm the formula is v= h * 3.14 * r squared

*asked on January 31, 2019* -
## Math

Express the product (1−1/2^2)(1−1/3^2)(1−1/4^2)···(1−1/21^2) as a fraction a/b, where a and b are relatively prime positive integers.

*asked on November 11, 2018* -
## analytic geometry

A parabola y=ax^2+bx+c has vertex (4,3). If (3,0) is on the parabola, find a.

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

Evaluate sqrt of (2003)(2005)(2007)(2009)+16 by using algebraic method.

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

Five members from a group of 6 girls and 5 boys are chosen. How many five-member teams are there that include more than two boys?

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

Write an equation of the line that passes through (-5,-1) and is parallel to the line y=-3x+6

*asked on August 10, 2018* -
## geometry

1)The Arthur Ravenel Jr. Bridge is the longest cable-stayed bridge in the United States. The bridge has a total length of 13200 feet. Each year, the Cooper River Bridge 5K Run is held in the Spring. If there are approximately 16404 feet in 5 kilometers,

*asked on July 29, 2018* -
## calculus

The equation x^2+4y^2=100 describes an ellipse. First, use implicit differentiation to find its slope at the points (8,3) and (8, -3). Then, solve the equation for y, obtaining two functions and differentiate both to find the slopes at x = 8. Do your

*asked on March 28, 2018* -
## Probability

In how many ways can 7 people be lined up in a row for a picture if two of them should have at least 2 people between them?

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

A rich uncle wants to make you a millionaire. How much money must he deposit in a trust fund paying 8% compounded quarterly at the time of your birth to yield $1,000,000 when you retire at age 59?

*asked on March 11, 2018* -
## Economics

Suppose that when disposable income rises from $5.2 trillion to $6.0 trillion, consumption rises from $5.0 trillion to $5.6 trillion. What is the marginal propensity to consume?

*asked on March 7, 2018* -
## calculus

Find the value of $800 deposited in a bank at 10% interest for 8 years compounded in the following ways. (Round your answers to the nearest cent.) (a) annually_________$ (b) quarterly_________$ (c) continuously________$

*asked on March 7, 2018* -
## calculus

The reproduction function for a sardine is f(p) = −0.0004p^2+3p, where p and f(p) are in hundred metric tons. Find the population that gives the maximum sustainable yield, and the size of the yield. population=_________ hundred metric tons size of

*asked on March 5, 2018* -
## calculus

Marine ecologists estimate the reproduction curve for swordfish in a fishing ground to be f(p) = −0.01p^2 + 8p, where p and f(p) are in hundreds. Find the population that gives the maximum sustainable yield, and the size of the yield.

*asked on March 4, 2018* -
## calculs

A page of 150 square inches is to have margins of 1 inch on either side and 1 1/2 inches at the top and bottom, as in the diagram. Find the dimensions of the page that maximize the print area.

*asked on March 4, 2018* -
## Probability

Four distinct fair of dice are rolled. What is the probability that the sum of the resulting numbers is at least 23?

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

30-second oral question The expression 9(2018^2)+20180+4040 is a square of what positive integer?

*asked on February 10, 2018* -
## Analytic Geometry

The midpoint of P(1,2) and A is Q; the midpoint of P and C is S; the midpoint of Q and S is R(5,1.5). Find the coordinates of B, the midpoint of A and C.

*asked on February 9, 2018* -
## Algebra

Jack and Jill regularly run around an 800-meter track, but Jack runs 2 m/s faster. If they start from the same point on this track, and run in the same direction, Jack will eventually pass Jill in 6 minutes and 40 seconds. What is Jill's speed?

*asked on February 8, 2018* -
## Maths

17. Atlanta, Georgia, receives an average of 27 inches of precipitation per year, and there has been 9 inches so far this year. How many more inches, p, of precipitation can Atlanta get and to stay at or below the average? (1 point) p + 9 > 27; p > 18 9 +

*asked on February 4, 2018* -
## Math

True or False. 1. Every function is a relation. 2. When you switch the inputs and outputs of any function, the resulting relation is a function.

*asked on February 3, 2018* -
## Algebra

1. -9p-17=10 Will someone help me figure out the answer and show me the process?

*asked on February 1, 2018* -
## Math

You are making cookies. One recipe calls for 4 cups of chocolate morsels for 3 batches of cookies.. A second recipe calls for 5 cups of chocolate morsels for 4 batches of cookies. Which cookies will contain more chocolate morsels?

*asked on January 25, 2018* -
## Math

An important business executive in Italy was caught speeding in northern Italy. He was testing his brand new Porsche sports car. He was clocked at 311 kilometers an hour and fined 347 Euros. If a kilometer is .625 of a mile and a Euro was worth $1.25 at

*asked on January 11, 2018* -
## Social Sciences-Social Anthropology

Hi Please help me I am confused Am I a homo sapiens? or a homo sapiens sapiens? thank you so much.

*asked on November 30, 2017* -
## Math

If 1 pound, 12 ounces of fish cost $2.24, what is the cost of the fish per pound?

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

A square measure 9 feet on a side. If each side of the square is increased by 3 feet, how many square feet are added to the area? What are the steps in solving this math equation?

*asked on November 25, 2017* -
## Physical Science

Describe/draw the process and steps of an electron emitting light.

*asked on November 9, 2017* -
## Chemistry

Calculate the pH of 175.0 mL of H2O following the addition of 0.57 mL of 1.39 M NaOH

*asked on October 3, 2017* -
## Physics

a) The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/day for males. Express this quantity in ?g/s. Express this quantity in b) For adults, the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day

*asked on June 9, 2017* -
## Chemistry

Given H2(g) + (1/2)O2(g) ---> H2O(l), dH = -286 kJ/mol, determine the standard enthalpy change for the reaction 2h2O(l) ---> 2H2(g) + O2(g) 2H2O(l) ---> 2H2(g) + O2(g) H2(g) + (1/2) O29g) ---> H2O (l) : dH = -286 kJ/mols 2H2O(l) ---> 2H2(g) + 2O2(g) :

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

Write the balanced chemical reaction (showing appropriate symbols and states) for the chemical reaction with enthalpy change equal to and defined by the quantity dHformation [NH3(g)] N2(g) + 3H2(g) --> 2NH3(g) Is that all the question is asking for?

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

When .560 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at standard-state conditions. What is the standard enthalpy of formation of NaF(s)? Start off by balancing the equation: 2Na(s) + F2(s) ---> 2NaF(s) Then make it for

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

The enthalpy of formation for a substance corresponds to the enthalpy change for a reaction. Write the specific chemical reaction defining the enthalpy of formation of butane: Just checking to make sure this is correct: 4C + 5H2 ---> C4H10

*asked on March 26, 2017* -
## discrete math

A bubble sort begins with the array: 372418 Work through the lists obtained at each step of the bubble sort. Complete the table below for the intermediate step where 7 is at position four in the array. [][][]7[][]

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

my divisor is 5 I'm greater than 4 X 5 I'm less than 5 x 5 my remainder is 1 what dividend am I

*asked on February 20, 2017* -
## 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 on February 15, 2017* -
## 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 on February 14, 2017* -
## Algebra

Translate into a variable expression. Then simplify the expression. Twice the sum of four times a number n and thirty. Can you explain how to write it as a variable expression pls Also what does "and" stand for here?

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

Problem: ABCDE$\ is an equilateral pentagon with side length 2 in which angle B= angle E=120 degrees. The area of ABCDE can be expressed in the form square root of x + square root of y for some integers x and y. Find x+y. I don't understand. I really need

*asked on January 29, 2017* -
## Math

A soccer field has a perimeter of 26 yards.if the width is 8 yards,how long is the length?

*asked on January 24, 2017* -
## PsyDAG How can i inteview you?

remember that statistics assignment of ours? pleaseee

*asked on January 21, 2017* -
## Statisticians Interview only

Hello are you a statistician? may I interview you? Thank you

*asked on January 19, 2017* -
## Math Slope

Jose the plumber charges $65 per hour to fix your plumbing. He uses the equation C=65H+100 to determine the charge of his services, C, after working h hours. What is the Y intercept? What does it represent in the context of the problem.

*asked on December 30, 2016* -
## Math

A printer takes 5mins to print 90 copies of a repor. At this rate, how many copies of the same report can it print in 1/2 hours

*asked on November 3, 2016* -
## algebra

The sum of two numbers is 100. Such that the first number is twice as large as the second number, when the second number is subtracted by 1.

*asked on August 15, 2016* -
## Math

A running track consists of two straight sections with semi-circular ends. If the straight sections measure 100 metres and one compete lap on the inside of the track measures 1/2 k, what is the distance x between the two straights?

*asked on August 15, 2016* -
## Calculus

What is the maximum area of a rectangle that has sides along the positive x-axis and y-axis and lies below the line 3x+2y=1

*asked on August 1, 2016* -
## Algebra

Rene used a $4 off coupon to buy bows which cost $2 each. Write an inequality rene could use to determine the number of bows she can buy if she plans to spen more that $8. Then graph the solution set

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

What mass of ammonium chloride must be decomposed to prepare 134 grams of ammonia (NH3). Hydrochloric acid will also be produced.

*asked on March 23, 2016* -
## Geography

which demographic group is correctly matched with its issue A.religious people - farm subsidies B.midwesterners - farm subsidies C.single parents - affirnmative action D.all are matched correctly

*asked on March 16, 2016* -
## College- US History

How has popular culture reinforced Cowboys of the West?

*asked on January 29, 2016* -
## Math

Prove that cot²A(secA-1) = Cos A

*asked on January 28, 2016* -
## Finance

****HELP PLEASE**** Given the following information, answer the following: TR=$3Q TC= $1,200 = $2Q 1. what is the break-even level of output? 2. If the firms sells 1,300 units, what are its earnings or losses? 3. If sales rise to 2,000 units, what are the

*asked on January 26, 2016* -
## Maths

In a box of markers there are eight which have dried up and will not write. The box contains 15 red, 15 purple, 5 black and 10 white markers. A marker is picked at random from the box. Find the probability that a) it is red b) it is not black c) it is

*asked on January 26, 2016* -
## Maths

The sum of two digits number is 7. In changing position of digits we get the number 9 less than the original number. What is number?

*asked on December 31, 2015* -
## PHYSICS

If there is no dark matter, in order to explain our observations, our concepts of an important building block of the universe have to be incorrect. What is that building block and why do Astronomers overwhelmingly favor dark matter, which they cannot see,

*asked on December 14, 2015* -
## Physics / Astronomy

If there is no dark matter, in order to explain our observations, our concepts of an important building block of the universe have to be incorrect. What is that building block and why do Astronomers overwhelmingly favor dark matter, which they cannot see,

*asked on December 10, 2015* -
## math

how do I find how many times greater ? 9x10 to the 8 power is how many times greater than 3x10 to the 7 power?

*asked on December 9, 2015* -
## maths

riposting this. the answer kindly supplied by Steve is beyond my understanding. all i want to know please is how long will the shadow be cast on the ground by a 3m tall vertical fence with the sun behind it as follows: THIS IS NOTHING TO DO WITH A LADDER A

*asked on November 4, 2015* -
## maths

THIS IS NOTHING TO DO WITH A LADDER A fence 3m tall is erected vertically and parallel to a building that is 10m away please can someone tell me the maximum length of the shadow the fence will cast on the ground - thank you

*asked on November 4, 2015* -
## maths

a fence 2m tall and 5m from a parallel building - what length is the shadow from the fence and how is this worked out?

*asked on November 4, 2015* -
## Math

find the sum of 2 1/2 and 2/5

*asked on October 16, 2015* -
## Math

2/3>3/ number that makes the statement true.. I am confused

*asked on October 13, 2015* -
## Social Studies

What was the main purpose of the settlers who established Jamestown? a.to trap animals and sell furs b.to find gold and silver c.to farm tobacco d.to collect sweetgrass for baskets Would it be B? I am thinking B,or C.

*asked on September 19, 2015* -
## Math

The local health club is advertising a special for new members: no initiation fee to join and lnly $34.50 per month for the first year. If Andy joins the health club for one year, how much will he spend on membership?

*asked on September 14, 2015* -
## Algebra

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 12 hours to drive the distance at 60 miles per hour, how long will it take to drive the same distance at 85 miles per hour? A. About 7.08 hours B. About 5.00

*asked on June 2, 2015* -
## algebraic modeling

A toy manufacturer determines that the daily cost,C, for producing x units of a dump truck can b approximated by the function c(x)=0.005x^2-x+109 I got that the manufacturer must produce 100 units per day... What is the minimum daily cost?

*asked on May 13, 2015* -
## math

Why Was the Engineer Driving the Train Backwards?

*asked on March 27, 2015* -
## chemistry

What volume of 0.050 M AgNO3, silver nitrate solution is required to reat completely with 60.0 mL of 0.025 M K2S, potassium sulfide?

*asked on March 13, 2015* -
## math -hw help

Determine whether the following regular tetrahedrons have an edge length that is a whole number, a rational number or irrational number. The surface are of a tetrahedron is given by the equation: SA = √ 3s^2 Surface are of regular tetrahedron A = 1.5

*asked on February 5, 2015* -
## math (factors and products)

How could you use an area model to identify the binomial factors of a trinomial?

*asked on January 22, 2015* -
## Math

How could you use an area model to identify the binomial factors of a trinomial?

*asked on January 21, 2015* -
## physics

A soccer ball is kicked with an initial horizontal velocity of 16.5 m/s from a 92 meter high cliff. Determine the time it took the ball to reach the ground and how far the ball got from the edge of the cliff.

*asked on December 16, 2014* -
## Algebra2

log2(x+8)-log2(5)=4

*asked on November 20, 2014* -
## arithmetic

If you have 3 cups of pineapple juice and, how many total cups of punch can you make? Table: Ginger Ale - 40% OJ 25% Pineapple juice 20% Sorbet 15

*asked on November 3, 2014* -
## Math

Write a word phrase for this algebraic expression. 6.5-h

*asked on October 28, 2014* -
## Physics(Science)

Waves on a 5.0 m rope travel at a speed of 92 m/s. If the tension in the rope is 497 N, what is the mass of the rope?

*asked on October 26, 2014* -
## elementary

Magic square 13.6

*asked on September 17, 2014* -
## Physics

A dart is thrown horizontally with an initial speed of 14 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.19 s later. (a) What is the distance PQ? (b) How far away from the dart board is the dart

*asked on September 14, 2014* -
## English

how do I start an Auto Biography? I mean what sentence should i start it with?

*asked on September 6, 2014* -
## MATH HELP!!

SID WROTE 541,309 ON HIS PAPER. USING NUMBERS AND WORDS EXPLAIN HOW THE NUMBER WOULD CHANGE IF HE SWITCHED THE DIGITS IN THE HUNDRED THOUSANDS AND TENS PLACES

*asked on August 20, 2014* -
## cOLLEGE mAJORS

ACCOUNTING VS IT WHICH IS HARDER? WHICH IS EASIER?

*asked on August 12, 2014* -
## math

2^5/2 - 2^3/2

*asked on August 9, 2014* -
## Physics

You are standing on a fish pond wishing to catch a fish. How would you aim your fish gun in order to catch a fish which your eyes could see 20 cm below the surface of water ? will u aim higher , lower or exactly on the location of the fish as seen by your

*asked on July 27, 2014* -
## Grammar

Before the items that are complete sentences, write S. Before those that contain fragments, write F. Before a run on sentence, write RS. 1. We often walk through the woods, picking berries and listening to the birds. Is this a run on sentence?

*asked on July 2, 2014* -
## math

how can i plot values in a parabola graph if the values are fractions. it's my first time with this things so i don't understand

*asked on May 3, 2014* -
## Math

If I has plots of (3,2) and (8,6) how would I find the area in square units

*asked on January 29, 2014* -
## Physics

A firefighter of mass 73 kg slides down a vertical pole with an acceleration of 5 m/s2. The acceleration of gravity is 10m/s2. What is the friction foce that acts on him? Answer in units of N

*asked on January 7, 2014* -
## Spelling

Wordly wise 3000 book 7 lesson 7c vocab answers?

*asked on December 17, 2013* -
## Science

Uranium-238 is less stable than oxygen-16. What accounts for this difference? (A) Uranium is a solid, while oxygen is a gas. (B) Unlike oxygen-16, uranium-238 has a nucleus in which repulsive electric forces surpass the strong nuclear forces. (C) Oxygen-16

*asked on November 20, 2013* -
## Math

If sin(x) = 1/3 and sec(y) = 29/21 , where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities. (Enter an exact answer.) cos(2y)

*asked on September 23, 2013* -
## English

What type of clause or phrase is italicized in the sentence below? The play, a three-act farce, amused everyone.

*asked on September 23, 2013* -
## math

Pat worked 43 hours and received $7.25 per hour for regular pay and time-and-a-half for all hours over 40 hours. What were her weekly earnings?

*asked on September 6, 2013* -
## physics

The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle θ = 38o by a brace that is attached to a pin. The beam has a weight of 346 N. Three additional forces keep the beam in

*asked on July 16, 2013* -
## math

what is missing number for magic square for 22, 111,72, 131

*asked on July 9, 2013* -
## algebra 1

Graph each rational function;identify the domain and ranges;and compare the graph with the graph y=1/x. 1.y=-10/x 2.y=1/(x+3)+3

*asked on April 24, 2013* -
## algebra 1

Graph each rational function;identify the domain and ranges;and compare the graph with the graph y=1/x. 1.y=-10/x 2.y=1/(x+3)+3

*asked on April 24, 2013* -
## calculus

the telephone company is planning to introduce two new types of executive communications systems that it hopes to sell to its largest commercial customers. It is estimated that if the first type of system is priced at x hundred dollars per system and the

*asked on April 23, 2013* -
## Science

What are some of the effects of the sun's radiation on the earth's atmosphere including the green house effect, conduction, convection and radiation?

*asked on April 10, 2013*