# Maddie

Popular questions and responses by Maddie-
## Third Grade Math

About how much does a button weigh? 1 gram 100 grams 1 kilogram 10 kilograms Thanks!

*asked on March 14, 2011* -
## MATH

The odds in favor of Carl beating his friend in a round of golf are 7 : 4. Find the probability that Carl will lose. would the answer be 7/11?

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

Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.

*asked on December 6, 2011* -
## Math

1. What is the range of the ages shown in the stem-and-leaf plot? 3|0,2 4|1,4,4,5 5|3,5,8,9 6|2,2,2,5,6,8 7|5,5,6 A. 4 B. 6--- My answer C. 34 D. 46 What is the median of the ages shown in the stem-and-leaf plot? 58 58.5 59---- my answer 59.5 What is the

*asked on January 17, 2015* -
## Chemistry

Give the formula and charge of the oxoanion ONLY in each of the following compounds. potassium sulfite sodium perchlorate lithium phosphite magnesium hypochlorite

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

The scatterplot shows the number of minutes spent reading (x) and the number of pages read (y) by each of seven students last night. Use the labeled points to create a linear model that predicts the number of pages that a typical student reads in x

*asked on December 15, 2016* -
## Algebra 2

If two fair dice are rolled, what is the probability that a total showing is either even or less than eight? How would I solve this question? What are the steps? Thanks

*asked on February 6, 2017* -
## social studies

Confucius believed that society would do well if everyone always did his or her... A. duty*** B. prayers C. jobs D. best I think it is A

*asked on February 23, 2015* -
## science

Which element is oxidized in this chemical reaction? 4Na(s) + O2(g) → 2Na2O(s)

*asked on January 17, 2020* -
## Math

What is the range of values of the probability of an event?

*asked on June 25, 2013* -
## Pre calculus

Use the given conditions to write an equation for the line in point-slope form. Passing through (-5, -7) and (-8, -6)

*asked on December 3, 2015* -
## physics

A 78 g basketball is launched at an angle of 45.4◦ and a distance of 10.1 m from the basketball goal. The ball is released at the same height (ten feet) as the basketball goal’s height. A basketball player tries to make a long jump-shot as described

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

What is the product of 3y2 and 4y5?

*asked on April 23, 2010* -
## Math

What is the upper quartile of the data set below 25, 8, 10, 35, 5, 45, 40, 30, 20 A. 5 B. 8 C. 9 D. 10

*asked on April 5, 2017* -
## math 7th grade

Ingrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. She divides the trail mix into 12 equal portions. Each portion weighs 0.7 pound. How many pounds of raisins did she use to make the trail mix? Express the answer to the nearest

*asked on April 13, 2016* -
## Math

At 6:00 A.M. the temperature was 33Â°F. By noon the temperature had increased by 10Â°F and by 3:00 P.M. it had increased another 12Â°F. If at 10:00 P.M. the temperature had decreased by 15Â°F, how much does the temperature need to rise or fall to

*asked on February 20, 2018* -
## Calculus

A box with a square base and no top is to have a volume of 32 ft3. What dimensions use the least amount of material (in other words what dimensions give minimum outside surface area)?

*asked on May 24, 2015* -
## Physics

A boat crosses a river of width 115 m in which the current has a uniform speed of 1.84 m/s. The pilot maintains a bearing (i.e., the direction in which the boat points) perpendicular to the river and a throttle setting to give a constant speed of 1.1 m/s

*asked on January 16, 2015* -
## math

which shapes will have an area of 24m2? choose all that apply. a. a triangle with the base of 6m and a height of 4m b. a parallelogram with a base of 48m and a height of .5m c. a trapezoid with the bases of 9m and 3m and a height of 4m d. a triangle with a

*asked on February 21, 2018* -
## Math

Sarah can afford $255 per month for 6 years on a car payment, what is the price of a car that she can afford at this time? Assume an annual interest rate of 8%. I do not remember how to solve for problems like this one.

*asked on March 12, 2017* -
## Math

Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?

*asked on April 15, 2015* -
## Math

Four less than the product of one and a number xxx.

*asked on August 22, 2019* -
## chemistry

1125 J of energy is used to heat 250 g of iron. After heating, the final temperature of the iron is measured as 55 °C. The specific heat capacity of iron is 0.45 J/(g·°C). What was the initial temperature of the iron? A. 45 B. 55 C. 20 D. 35 I don't

*asked on June 8, 2018* -
## physics

The coefficient of kinetic friction for wood on wood is o.55. The coefficient of kinetic friction for wood on wood is 0.68. For a 3.5kg wood block being pulled horizontally: a. what is the pull force needed to start the wood block moving on a wood floor?

*asked on December 10, 2016* -
## Math

1st question: Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble

*asked on May 18, 2016* -
## Foley

Math angle 1 is complementary to angle 2. angle 2 is supplementary to angle 3 equal to 126 degrees. find measure angle one

*asked on October 2, 2015* -
## Math

Are 1.6 square meters & 16 tenths square meters the same?

*asked on September 8, 2015* -
## math

for what whole number values of length and width will the rectangle have an area of 60 square yards and a perimeter of 38 yards?

*asked on April 29, 2015* -
## PHYSICS PLEASE HELP

A very large firecracker explodes in the hallway into 3 fragments. Physics students rush to the scene to enrich their knowledge of the law of conservation of momentum. They report that Fragment 1: mass=1.23kg, v=8.70m/s, north Fragment 2: mass

*asked on April 28, 2015* -
## Math

On Tuesday, Leslie spent 47 minutes on math homework, 39 minutes on science homework, 52 minutes on English homework, and 44 minutes on history homework. How much time did Leslie spend doing her homework on Tuesday?

*asked on April 6, 2015* -
## Algebra 2

Why couldn't the chicken find her egg?

*asked on February 16, 2014* -
## Calculus

Determine whether Rolle's Theorem can be applied to f on the closed interval [a,b]. If Rolle's Theorem can be applied, find all values of c in the open interval (a,b) such that f'(x)=0. f(x) = x^(2/3) - 1 [-8,8] I plugged in both values and found out that

*asked on September 26, 2013* -
## math

You want to put $4,000 in a simple interest account. It has a 2.5% annual interest rate. How long will it take you to earn $500 in interest?

*asked on May 27, 2013* -
## Physics

If the bat emits a sound at a frequency of 80.0 kHz and hears it reflected at a frequency of 83.3 kHz while traveling at a speed of 3.9 m/s , calculate the speed of the insect. So using the doppler effect I got that 1.04=(344+3.9)/(344-vbug) This is

*asked on June 7, 2018* -
## Differential equations

Suppose a cup of coffee is at 100 degrees Celsius at time t = 0, it is at 70 degrees at t = 10 minutes, and it is at 50 degrees at t = 20 minutes. Compute the ambient temperature. So in the book I was given Newton's Heat equation. dT/dt=k(A-T) where T is

*asked on April 13, 2018* -
## Chem

A 1.0 mL sample of seawater is determined to contain 9.0×10-14 moles of dissolved gold. How many atoms of gold are in that volume of seawater?

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

Since the time of the play's first performance, the props and set have been designed to be minimal so that the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences **my answer actors must think

*asked on May 8, 2017* -
## AP Chem

1. Van't Hoff factors depend on the concentrations of the dissolved solute species. Why would a dilute solution have a Van't Hoff factor closer to the ideal value? a. because in dilute solutions solute species are less likely to bump into each other and

*asked on January 24, 2016* -
## Social Studies

What is the meaning of the 16th Amendment?

*asked on September 17, 2007* -
## Algebra

To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2) I have another problem just like this one so if you could explain how to solve this one I

*asked on July 27, 2007* -
## algebra 2

One phone company advertises a flat rate of .07 per minute for long distance calls your long distance plan charges five dollars per month plus a rate of .05 per minute how many minutes do you have to talk to each month so that your average cost is less

*asked on February 25, 2020* -
## Math

If 7000 dollars is invested in a bank account at an interest rate of 10 per cent per year, find the amount in the bank account after 11 years if interest is compounded annually

*asked on February 14, 2020* -
## English

The main theme of Elizabeth Barrett Browning's poem "How Do I Love Thee," is that love is a powerful and moving force in people's lives. It is expressed through Browning's words in the poem. How is this same theme best conveyed in "The Adventures of

*asked on January 10, 2020* -
## History

Which of the following statements best explains the purpose of the Bay of Pigs invasion? a) The Bay of Pigs Invasion was a secret operation, conducted by the CIA, to overthrow Fidel Castro in Cuba. b) The Bay of Pigs Invasion was a massacre of a Vietnamese

*asked on May 27, 2019* -
## math

Jay rides his 2.0-kg skateboard. He is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. The board now goes forward at 13 m/s. A. Determine Jay’s mass. B. Determine the change in the internal energy

*asked on February 1, 2019* -
## chemistry

Study the reaction. 2A(?) + B(g) ⇌ A2B(g) Both B and A2B are gases. When the reaction vessel is compressed, the equilibrium position does not change. What conclusion can we draw about the state of “A” from this data? A. "A" must be a gas because, if

*asked on June 8, 2018* -
## Equalities- SUPER confused

If a = 3/5, b = 3, c = 1, d = 5, which equality is true? A)d/a = b/c B)a/b = c/d C)b/a = c/d D)a/d = b/c How do I figure this out?

*asked on February 20, 2018* -
## Math again sorry

A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet. How far below or above the deck is the

*asked on February 20, 2018* -
## Calculus

How many units should this company sell to maximize their revenue if the revenue function was -(x^2/100)+50x using derivatives?

*asked on July 18, 2017* -
## chemistry

A reaction mixture of N2O4 and NO2 absorbs the heat given off in the combustion of 6.35 L CH4 measured at 24.7 C and 812 Torr. How many moles of N2O4 can be converted to NO2 as a result? CH4 + 2O2 --> CO2 + 2H2O Delta H = -890.3 KJ N2O4 --> 2NO2 Delta H =

*asked on March 22, 2016* -
## chemistry

how many grams of solid calcium oxide must react with excess water to liberate the same quantity of heat as does the combustion of 24.4 l of methane gas (CH4), measures ar 24.7 c and 753 torr? CaO +H2O --> Ca(OH)2 Delta H = -65.2 KJ CH4 + 2O2 --> CO2 +2H20

*asked on March 22, 2016* -
## Algebra

Maria starts walking at 8:00 at 4 miles per hour. Nichole starts walking at 8:12. At what constant rate of speed will Nicole need to walk to catch Maria at 8:42?

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

Q: A ship leaves the port of LA and travels 120 miles on a bearing of S47ºW and then 110 miles on a bearing of N80ºW. Find the total distance traveled South and West and also its bearing from the port of LA. I have found the distance traveled South and

*asked on October 26, 2015* -
## Math

The ratio of the number of men to the number of women to the number of children in a theater is 3:5:2 there are 69 men in theater A.how many more are there in the theater B.how many children are there in theater

*asked on October 20, 2015* -
## Literature

The civil rights movement consisted of many events, such as freedom rides and sit-ins. Some of the events, such as fires and murders, were violent and unsettling. But the killing of the four little girls in Birmingham is considered one of the most

*asked on January 17, 2015* -
## physics

Calculate the force of gravity on a 16 kg mass at Earth's surface. The mass of Earth is 6. 1024 kg, and its radius is 6.4 106 m.

*asked on January 13, 2015* -
## Physics

A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 58.8° and a speed of v1 = 28.4 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum

*asked on October 31, 2014* -
## Advanced algebra

The number of freshmen entering college in a certain year is 621. What type of data is 621? A. Discrete data B. categorical data C. Continuous data

*asked on August 18, 2014* -
## Physics

Imagine that if you drop an apple from a certain height, its final speed is 20 m/s when it reaches the ground. If you throw the apple vertically downward from the same height with an initial speed of 20 m/s, what will be its final speed? I tried

*asked on October 7, 2013* -
## Chemistry

The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in

*asked on April 12, 2013* -
## algebra

write and inequality describing this region. will an 18 wheeler hold 71 refrig's and 118 tv's or will it hold 51 refig's and 176 tv's?

*asked on March 24, 2013* -
## Chemistry

An aqueous antifreeze solution is 31.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.039 g/cm3. Calculate the molality of the ethylene glycol.

*asked on March 14, 2013* -
## chemistry

A reaction occurs where the concentration of reactant A changes from 0.74 moles/liter to 0.63 moles/liter in 20 seconds. what is the average rate of reaction?

*asked on November 17, 2011* -
## geometry

solve this proof: PR is congruent to DE, PT is congruent to DF, Angle R is congruent to Angle E, Angle T is congruent to Angle F.. Prove Triangle PRT is congruent to Triangle DEF

*asked on November 6, 2011* -
## geometry

If the length of a rectangle is twice its width, w, write an expression to represent the perimeter of the rectangle. If the perimeter of the rectangle is 72 inches, what is the length and width of the rectangle?

*asked on September 6, 2011* -
## Mathematics

Jake's car needs repairs but he is short of cash. A payday loan company charges a fee of 46 for a two week loan of 250. This is equivalent to a discounted loan with proceeds of 250 and a loan amount of 296. What is the per annum interest rate?

*asked on November 12, 2008* -
## Accounting

Interest on a $20000 one-year 10 percent note payable dated October 1 2007 was not recorded. The 10 percent interest is payable on the maturity date of the noteWhat is the interest income

*asked on October 14, 2008* -
## Global Studies

So I have to do a project on the 3 regions of Nigeria. I can't find any information on Eastern Nigeria. All I have to do is right a paragraph of that region and highlight and important features of the region. I was wondering if anyone had any information

*asked on May 15, 2008* -
## math

How do you solve system of equations and tell if they're consistant and independant,consistant and dependent,and inconsistant? If you find no solutions then the system is inconsistent. Suppose you have N variables and M equations (N larger than or equal to

*asked on July 27, 2007* -
## pre-calculus

Initially 700 milligrams of a radioactive substance was present. After 2 hours the mass had decreased by 5%. Construct an exponential model A(t) = A0ekt for the amount remaining of the decaying substance after t hours. Find the amount remaining after 24

*asked on April 16, 2020* -
## Algebra

A survey of voters explored the relationship between the ages of voters and whether or not they support building skateboard ramps at a local park. Chart: Age In Favor Opposed Total 18-37 40 10 50 38-57 27 23 50 58 and 6 44 50 over Total 73 77 150 1.) What

*asked on April 16, 2020* -
## History

ist and describe the four underlying causes of WWI.

*asked on March 22, 2020* -
## science

The question is........Suppose one large atom bonds with one small atom. Predict whether the properties of the new molecule will be the same as the large atom, the same as the small atom, or different from both atoms.

*asked on March 17, 2020* -
## Math

What are the first 2 common multiples of 8 and 9 that are less than 100?

*asked on November 21, 2019* -
## Math

Hi there! So in math I am having trouble for factorization. I do get help from my teacher but I’m still confused? Terrence is taking two medications for his flu. He begins taking them both at 10:00 PM on Tuesday. If he takes one every eight hours and the

*asked on November 1, 2019* -
## Algebra

The volume of the cube is equal to four times the area of one of its faces. What is the volume of the cube?

*asked on October 21, 2019* -
## Math

A chef has a 2 3/8- pound salmon filet. He slices into 4-ounce servings. a.) How many pounds in each serving? b.) How many 4-ounce servings can the chef create from the filet? How many ounces of salmon are left over?

*asked on October 15, 2019* -
## Science

Object A has a higher temp then object B. Witch statement is true? A) Object A is a better insulator B) Object B is a better conductor C) Heat will travel from Object A to Object B D) Heat will travel from Object B to Object A The answer is C (I know

*asked on September 18, 2019* -
## math

Aubs has a photo that is 4 inches wide by 6 inches long. She wants to enlarge its length to 30 inches. What should the width be in order to keep the new photo proportional?

*asked on May 24, 2019* -
## statistics

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if she wishes the estimate to be within four percentage points with 90%

*asked on April 29, 2019* -
## science

how does the process of plucking cause erison

*asked on March 1, 2019* -
## English

What other types of writing is similar to the autobiographical essay 1.an email sent to a friend that tells her about an event in your life 2.a book report you wrote for school 3.a postcard sent to your family while you are traveling. 4. A multiple choice

*asked on September 19, 2018* -
## chemistry

The energies, E, for the first few states of an unknown element are shown here in arbitrary units. n 1 2 3 4 0 E -63 -27 -12 9 infinity A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to

*asked on September 13, 2018* -
## Geometry

A grid shows the positions of a subway stop and your house the subway stop is located at (-3,6) and your house is located at (-7,2) what is the distance to the nearest unit between your house and the subway stop Answers 6 11 9 13

*asked on May 24, 2018* -
## Differential equations

solve 1/(x^2+1) * y' + xy = 3 for y(0)=0 So I needed to find the integrating factor which is r(x)=e^(integral(p(x)dx)) so here p(x) is just x therefore r(x)=e^(x^2/2)? Then I am supposed to be able to put it in the form d/dx(r(x)y)=RHS but this doesn't

*asked on April 13, 2018* -
## Calculus

I have a differential equation stating solve: y'=(y-1)(y+1) when y(0)=3 I separated the dy/dx so I got dy/(y-1)(y+1) = dx took the integral of both sides and solved with PFD I then got that x= 1/2 ln(y-1) - 1/2ln(y+1) +c I solved for C and got that C=.3466

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

Simplify. -2(3)^2 - 8 ÷ 2 + 6 A) -18 B) -16** C) -7 D) 7 Lucy is trying to find a rational number between 3/8 and and 6/7 What would help her to find this number? A)Divide 3/8 by 6/7*** B)Multiply 3/8 by 6/7 C)Convert 3/8 and 6/7 to Fractions with a

*asked on February 20, 2018* -
## Math

David is playing a trivia game where he gains points for correct answers and loses points for incorrect answers. At the start of round 3 his score is −1500 points. During round 3 he answered five 1000 point questions correctly and three 500 points

*asked on February 20, 2018* -
## History

what was the purpose of the federal troops occupying Texas after the civil war? 1.to conduct military trials to place previous confederate officers on trial. 2.to ensure that Texas rejoined the union appropriately.****(my answer) 3.to provide training and

*asked on January 10, 2018* -
## Physics

I know that if a ramp is steeper, larger theta, then the object rolling down will become faster. However, if the object is rolling up the ramp will it slow down like I think it should? How can I prove this? When I try to prove it via a kinetmatics equation

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

How would I find final velocity at the top of an inclined ramp with a given angle theta?

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

determine whether the number sentence is true. In each case explain how you could answer without calculating. Check your answers by doing the indicated calculations. A. 50 x 432= (50 x 400) + (50 x 32) B. 50 x 368 = (50 x 400) - (50 x 32) C. 50 x 800= ( 50

*asked on October 25, 2017* -
## science

Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

*asked on October 7, 2017* -
## science

Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

*asked on October 7, 2017* -
## science

Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up

*asked on October 6, 2017* -
## math/econ

If the demand is x(p)=40(p-15^2) with p being the price and x being hte demand, what would the elasticity of demand equation be?

*asked on July 20, 2017* -
## Calculus

How do I find the derivative of e^y -y=x^2 -2? Do I use chain rule with -d/dy or -d/dx or dy/dx? And then how do I find the slope of the graph if the point's at (2,0)?

*asked on July 19, 2017* -
## Science

How much effort force would you have to use to lift a 800 newton load using a pulley system with a mechanical advantage of 4?

*asked on May 15, 2017* -
## Math

Solve and graph the following inequality: -m/5+8>10

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

Which of the following is NOT a characteristic of an animal? Have eukaryotic cells digest their food make their own food******* have many cells with different functions

*asked on April 10, 2017*