Maddy

This page lists questions and answers that were posted by visitors named Maddy.

Questions

The following questions were asked by visitors named Maddy.

I have 56 coins consisting of nickels and quarters. The total value of the coins is $5.60. How many of each coin do I have? Algebra to the rescue... NN is number of nickles ND is the number of quarters. NN*.05 + ND*.25=$5.60 but NN + ND=56 two equations,...

What chemical fuel powers all cell activities? Since this is not my area of expertise, I searched Google under the key words "<I>cell metabolism chemical</I>" to get these possible sources: http://www.answers.com/topic/cell-metabolism I hope this helps. T...

I need a table about Silver mining rise during the last five years. PLEASE post me where I can find a DECENT one. Thanks Maddy It looks as if what you need to do is learn how to conduct thorough and effective searches for yourself. That's what re<b>search...

please help me with this question and check my answers. Solve the problem. A rectangle with width 2x + 5 inches has an area of 2x4 + 9x3 - 12x2 - 79x - 60 square inches. Write a polynomial that represents its length. ( I don't know how to solve this probl...

Solve the problem. A rectangle with width 2x + 5 inches has an area of 2x4 + 9x3 - 12x2 - 79x - 60 square inches. Write a polynomial that represents its length. I got x^3+2x^2-11x-12 inches. is this correct? I used long division.

Hi What Alkalis In The House ??? Ect. Gavasoon

Why should we ban people from having non native animals as pets (Australia)

List reasons we should ban having non-native animals as pets (Australia)

What is the best ways to organize a dbq and a thematic essay for the AP US Test?

What are the like terms in this expression. 3ac + ab - ac + 2ab? Explain please?

What are the like terms in the exprression 3ac = ab - ac = 2ab? Explain. Simplify the expression. Show your work.

Use the digits 1-9 in order. Insert operation signs and grouping symols to get a value of 100.

Need help in solving 0.5b+3.4=0.2b+12.4

solve: perimenter of triangle perimeter is 12 meters determine values x, x+1, and x+2 x(x+1)+(x+2)=12

I need to know if the following are independent dependent or inconsistent, y=-3x+19 y=2x-1 y=-4x-7 y=3x

Is this sentence correct Breakfast Is Served Between 6:30 AM & 10:30 AM

A hypothesis says the upper limit in frequency a human ear can hear can be determined by the diameter of the eardrum, which should have approximately the same diameter as the wavelength at the upper limit. Using the hypothesis what would be the radius of...

I;m so lost with these questiona. Any help will be appreciated. 1. Find the area of a square if one side measures 27 centimeters. 2. Exactly how many cubic inches of air can a fully inflated basketball hold if its radius is 4.2 inches? Use Pi 3. How many...

Suppose you are asleep and the doorbell rings. You stumble to your feet and move toward the door, open it and speek with your visitor. Think of the many changes occurring in your body as you awaken and respond. How does the three types of muscle tissue he...

Teaneck High had an enrollment of 11040 in 1985 and an enrollment of 12100 in year 1998. What is the predicted enrollment of Teaneck High in 2014 if we assume a linear model?

HOW DO I DO THIS? A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 28.0 m/s. A net is positioned a horizontal distance of 51.0 m from the cannon. At what height above the cannon should the net be placed in order to c...

I have several questions similar to this one and was wondering if you could walk me through this one. I'm totally lost on how to do it. Paramecia reproduce by splitting in two. In a laboratory flask, a colony of paramecia had an initial population of 500....

Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.

A daredevil leaves the end of a ramp with a speed of 32.0 m/s if his speed is 29.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? how do i do thiss?

-5+r=2r+3 what does r equal

There are 3 parades on Cable Tv in the morning, 2 in the afternoon and 4 at night. How Many different combinations of parades can Ty watch?

Please help this question is from my unit on linear programing and I'm having trouble completing it. A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour...

Can 252/1663 be simplified? If it can be simplified, what is the new simplified fraction?

If a 28 mLs of a 0.25 molar NaOH solution is used to titrate 14 mLs of a nitric acid to its phenolphthalein endpoint, what is the molar concentration of the acid?

If a weak acid has a dissociation constant of 6.4 x 10(-6), what is the pH of a solution of this acid in 0.10 molar concentration?

If a weak acid has a dissociation constant of 6.4 x 10^-6, what is the pH of a solution of this acid in a 0.10 molar concentration? I still don't understand the equation you gave me. My textbook doesn't break it down like this, so I'm confused as to where...

I'm trying to write a few sentences about what I believe friendship is. I really love Shakespeare's literature, and want to write the sentences like his. Friendship sy ne expressed fram the mind, but the soul. It is se abounding consanguinity which one co...

A roller-coaster car with a mass of 500 kg starts at rest from point A, which is 46 m above the ground. At point B, it is 23 m above the ground.

Compare the gravitational force on an 11 kg mass at the surface of the Earth (with radius 6.3 X 10^6 m and mass 6 X 10^24 kg) with that on the surface of the Moon (with mass 1/81.3 ME and radius 0.27 RE). What is the force on the Earth? What is the force...

How many grams of sodium hydroxide are required to prepare 500 mL of 0.500 M NaOH?

Calculate the volkume of 0.750 M KNO3 that contains 17.0 grams of KNO3?

What is the concentration of HCl in a 250.0 mL sample of hydrochloric acid if 15.5 mL of 0.0100 M NaOH is needed to react with all the HCl?

What volume of 0.406 M KOH is required to completely react with 18.50 mL of 0.287 M H2SO4?

How would I solve: X^(4/3)+X^(2/3)=28

A 68.4g sample of Potassium Chloride was added to 200g of water at 20 degrees celsius. Is the solution saturated, unsaturated, or supersaturated?

The diagonal of a square has length square root 2 X s, where s is the length of a side of the square. What is the length of the diagonal in a square with sides that are 13 cm? Round your answer to the nearest tenth.

I am having trouble answering this. please help! Q: Cereol is a newly discovered compound in corn flakes. A biologist suspects that it increases mental ability. She is making a solution to test on rats. First she makes a stock solution. She discovers that...

Find the frequency of a wave whose period is 0.320s.

1. The smell of cooking is delicious to the hungry camper. 2. A good fire is difficult to build. looking for simple subject and predicate 1, smell. Predicate. Camper subject 2. Fire subject. Build predicate

A pair of dice is rolled once. suppose you lose $9 if the dice sum to 9 and win $11 if the dice sum to 4 or 6. how much should you win or lose if any other number turns up in order for the game to be fair?

What is 5x cubed over x squared multiplied by 3x to the fourth power over 6x?

Two resistors 3 Ù and 6 Ù are connected in parallel across a 6 V battery. What is the current flow through the 3 Ù resistor?

Solve. x+12/x+4 = x/x+8 A) x=-4 B) x=8 C) x=6 D) x=-6 thinking that it's B.. help?(:

Solve. 10/3x + 4/3 = 7 + x/2x A) x = 1/3 B) x = 17/5x C) x = 1/5 D) x = 1/6 thinking it's A.. help?(:

Write the expression as the sine, cosine, tangent of an angle (in radians.) (tan(pi/5)-tan(pi/3))/(1+tan(pi/5)tan(pi/3))

Hi I have a maths problem I can't figure out please someone help. Zac had some 2c stamps and 5c stamps.he needed to put 30c on a postcard to mail it.what combinations of stamps could he use.

A piece of wire 28 m long is cut into two pieces. One piece is bent into a square and the other is bent into a circle. (a) How much wire should be used for the square in order to maximize the total area? (b) How much wire should be used for the square in...

stacey is standing 5 miles west of the control tower at an airport. A plane took off traveling directly north of the control tower at a rate of 180 mph along the ground at a constant angle of 15 degrees. A)after 12 minutes, what is the angel between Stace...

I need some help with determining the equation for this problem. "The block of mass m is released from rest on the frictionless incline. After sliding a certain distance, it compresses a spring and comes to rest at a distance of y beneath its original pos...

Can you please help me solve r1/r2 = sqrt(M2/M1)for M1. My answer: M1=M2r2^2/r1^2 Is this correct?

32.0=5.5x10^2(1/T)+14.2 Solve for T I am confused about what the first step would be to solving for T. Would I divide 5.5x10^2(1/T) and move it to the left side? Please help.

Find cotangent theta given that cosecant theta equals -3.5891420 and theta is in the third quadrant. I was using the trig identity 1+cot^2theta=csc^2theta I wanted to isolate cotangent so I plugged in 1/sin (-3.5891420) and then squared my answer. I then...

Fin the value of Theta if sec theta=3 I inverted the value of sec theta to get cos theta=1/3 I then said Theta=cos-1 (1/3) Is thus correct? What is the answer rounded to the tenths place?

If a .750g sample of magnesium chloride is dissolved in water and then treated with a silver nitrate solution how many grams of silver chloride should be collected? I don't understand what my first step should be. The balanced equation is MgCl2+2AgNO3=2Ag...

The volume of the nitrogen gas is 125ml atmospheric pressure is 763mm Hg Water temperature is 24 degrees Celcius. The water level inside the eudiometer is the same as the level of water in the beaker. Calculate the pressure of the dry nitrogen gas. PH2=Pt...

Read the passage and answer the question that follows: John Brown, supported by abolitionists and Republicans, tried to start a slave revolt. Therefore be it resolved that the defense of slavery is a common cause to all Southern states. At the call of any...

Two tuning forks are struck at the same time; one with a pitch of 410Hz one a frequency of 500Hz. How many pitches do you hear and what are the frequencies?

Which of the following equations represents the line that is parallel to the line y=5x+2 and that passes through the point (1,-3)?

Rationalize the denominator. The twos are outside of the square root signs. 5/(sqrt14)-2 x (sqrt14)+2/(sqrt14)+2 The answer is sqrt14+2/2 I am having trouible understanding hoe to get rid of the 5

Factor: x^4(4) (2x+1)^3 (2x)+(2x+1)^4 (4x^3) Please help! I cannot figure out how to go about this problem

Graph y=2csc(x-π) New period that I solve for 0<x-π<2π π<x<3π What is my quarter period? I got that it was 3π/4 but when I add this to pi 4 times o reach 4π instead of 3π. Please help.

Sqrt of 9sin^2x Is the answer |3sinx|? Is the three included in the absolute value sign? My teacher is very picky and I need to fully understand this concept. Thank you.

A large statue in a crate is being moved. The mass of the statue and the crate is 150 kg. As the statue slides down a ramp inclined at 40.0°, the curator pushes up, parallel to the ramp’s surface, so that the crate does not accelerate. If the statue slide...

A 35 micro coulomb point charge is placed 32 cm from an identical 35 micro coulomb charge. How much work would be required to move a 0.5 micro coullomb test charge from a point midway between them to a point 12 cm closer to either of the charges?

How many grams of NaNO2 must be added to 1 liter of 1.00 M HNO2 solution in order to prepare a buffer solution with pH = 4.14? pH = 3.14? My work: ka = pH(buffer ratio) 4.5 * 10^-4 = 1.000*10^-4.14 (x M of base/1.00 M of acid) x = 6.21 6.21 M = (6.21 mole...

Can somebody help me understand batteries? I'll explain what I know, then, you can tell me if I'm right or wrong. I know that a battery consists of three main parts: the anode, the cathode, and an electrolyte. The anode is electropositive and the cathode...

How many 2's must be multiplied together for the product to be a number between 100 and 200?

If the concentration of KCN at the equivalence point is 0.1M and the Ka for HCN is 6.2*10^-10 find the pH at the equivalence point. The reaction is between KOH and HCN From my understanding I have to do a stoichiometric calculation and then use the Hender...

A student prepares a soln that is initally 0.006M Pb2+ and 0.00450M I-. This soln is placed into a 1.00cm wide cuvet and inserted into the spectrometer producing as abosrbance reading of 0.430 at a wavelength of 456nm. What is the equilibrium concentratio...

Prepare 30mL of a stock KI soln by mixing 10.0mL of the 0.03M KI in 0.2M KNO3 with 20.0mL of the .2M KNO3 Determine the concentration of the iodide ion. What does it mean by the 0.03M KI in 0.2M KNO3? Is this just bad wording of the question? Am I just mi...

find the intervals on which f is increasing and decreasing f(x)=(x-2)/(X^2-x+1)^2 I found the derivative a got a whole mess of things: ((x^2-x+1)^2-2(x^2-x+1)(2x-1)(x-2))/(x^2-x+1)^4 Do I have to use the quadratic formula to solve for the vertices to find...

Assume that the reaction was limited by the surface area of the nails, making Fe the limiting reactant. Based on the decrease in the mass of nails, calculate theoretical yield of copper. 2Fe+3CuCl2--->2FeCl2+3Cu

What mass of precipitate is produced when 40.0 mL 0.100M lead nitrate reacts with 30.0 mL 0.100M aluminum sulfate? Assume the volumes are additive. I keep getting the answer of 2.7g precipitate formed rather than the answer of 1.21g. I am using an ice tab...

If 15.0 cm3 of 2M hydrochloric acid reacted exactly with 40.0 cm3 of potassium hydroxide. Calculate the concentration of the alkali I got the answer of .75M for KOH I went from cm^3 of HCl to L to mols then mols of KOH then to molarity of KOH. Is this cor...

If 25.0 cm3 of 0.50M sulfuric acid reacted with exactly 12.5 cm3 of sodium hydroxide, calculate the concentration of the alkali. I first balanced the chemical equation between sulfuric acid and sodium hydroxide. H2SO4 + 2NaOH --> 2H2O + Na2SO4 I converted...

The sum of two numbers is 31. The first number is 5 less than the second. Find the numbers. what?

The weight an object exerts on a scale varies directly with the mass of an object. If a bowling ball has a mass of 6 kg,the scale reads 54. a.write an equation for the relationship between weight and mass. b.If another object has a mass of 8 kg, what woul...

Triangle STR is congruent to triangle XYZ, TR= 14c - 13, and YZ = 10c - 1, Find c and TR

An enzyme sample contains 24 mg protein per mL. Twenty µL of this sample in a standard incubation volume of 0.1 mL catalysed the conversion of substrate X to product Y at a rate of 1.6 nmol per minute. Calculate the velocity in terms of: a) µmol per minut...

Lesson 10: Linear Functions Unit Test Algebra 1 A Unit 6: Linear Functions (Connections Academy) 1.a yes: y=1.2x 2.d no; y does not vary directly with x 3.d graph going from (-10, -5) to (10, 3) 4.d graph going from (-10, -3) to (10,9) 5.b 46/1; your car...

At the mall, Leona bought a T-shirt and a book for a total of $28. The book cost $12. How much did the T-shirt cost? What is the unknown information? Let x represent the unknown information. Write an addition equation that models the problem Solve the equ...

A writer decides to make an emotional appeal in an essay to persuade the audience of his or her opinion? A. a touching story B. historical facts C. expert opinions D. scientific evidence (this one?) Please help. Thank you!

Answers

The following answers were posted by visitors named Maddy.

Exctly What are you asking??

If your answer is 8 is zero of f(x), no we had this problem and that is not the answer if I remember

i have tried and i cant figure it out. why do you think i posted it on here?

I would agree that this is not first grade math at all. The only thing that I could come up with is a cube. I didn't learn anything like this when I was in first grade.

First find the slope, by using y2-y1/x2-x1,and then plug in either one of the ordered pairs into y=mx+b, to find b,the y-intercept. then plug in the slope for m and the y-intercept for b, and youve got it!

$4.25 Was how much he made per hour

Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.

3/16=x/96 96(3)=16x 288=16x 288/16=16x/16 x=18

They are all on at different times. None retelevised

Thanks, totally still confused. I don't know how to solve for (x) since I don't know what the acid is?

The equation I'm trying to use looks like this: 1.0 x 10^-14 divided by 6.4 x 10^-6 which gives me a solution of 1.5625 x 10^-9 which can't be right!

The problem was 6.4 x 10^-6. Thanks

Would that still equal a pH of 3.1?

Is there a shakespearean translator online?

Friendship is not expressed from the mind, but the heart. It is an abounding relation which one could ever sense. Do you know of any Shakespearean translator online?

Frienship is what one seeks for when they are forlorn.

Friendship can break the inner you, form the newer you and turn you into someone whom you've never imagined to become. From arrogant, it can turn you to someone compassionate, and can change someone from generous to discourteous.

Thanks a ton for the sites Writeacher:)

I have the same essay question. here's part of my notes...the eastern part of the Taklimakan desert receives less than 0.5 inches of rain per year...hope i helped!!

i have this work sheet right now, and i don't know the answer

The answer is C

No its isn't that I found how you do it that would part of it.

I need to call my lawyer

The answer is 2. Fnet=Sqrt of 2 F

help please lol.

For d) the text this question is from uses the formula i(home)=i(foreign)+[E(expected)+E]/E. Assuming the question is just meant to recall knowledge of the formula from earlier in the chapter: i(foreign) = (1/E)-1 and expected depreciation = 0.1.

Doesn't that just give me back my original equation of mgy=kx^2?

math you mow 1/3 of a lawn, and your sister mows 2/5 of the lawn. what is the area of the entire lawn? what is the length of the section left to mow? From 30 ft by width & 121 ft (1/3 in one box , 2/5 in the second box, what is the ft in the third box?

Thank you very much DrBob222

I got the answer 1.125grams. Please help!

I have no clue...

I figured it out after staring at what steps I already had written down.

torque=F*D/2=2000n(0.15m)=300 N*m Power = Torque*angular speed =(300 N*m)(300 RPM) (2*PI/60) =9424 W = 9.42 kW These are the answers in the back of the text.

The formula for area of a square is a^2. The find the length of a side reverse the formula by finding the square root of 196.

Thank you sooo much!!!

I cannot figure out how to simplify this.

Solid CuCl2 is 2.03g Fe before reaction reaction 2.0072g Decrease in nail mass 0.32239

I got Smart's test and got 100%

I just want my answers checked

Well I just need help with this one question. For the data in the table, does y vary directly with x? If it does write an equation for the direct variation. x y 8 13 16 26 24 39 yes; y=5x yes; y = 10x yes; y = 1.625x no; y des not vary directly with x

So what’s the answer

Oh okay.Thank you!!

Equal in magnitude

Oh!! I get it, I just had trouble finding out how to solve to get k, but then I realized you just have to divide both sides until you isolate k by itself. Thanks!

It is possible but it’s not 6 :/

It’s D because it’s a six sided number cube and there is two numbers greater than 4 which is 5 and 6. An equally likely chance would be less than three because if she rolls a two or a one she can score a point. It would be equally likely because they both...

I needed the help thanks ms. Sue

These are actually really good you guys👍

Sorry about the double reply, forgot to put my name😆

If I have graphed the constant of proportionality, what will the x value be on the graph?

I think you forget the second half of the question bud

Inequality: m+1/4m+3/2m>22 Solution: m>8 I got it right on Khan Academy.