# Posts by Matt

Total # Posts: 2,403

**math**

Thanks I was using it and getting 1 as the answer but since I have to plug in six more of the "p" fractions with different denominators I thought it didn't make since that for each one would be 1

**math**

find the sum cos^2(j) + sin^2(j), if j = p/3 -do I have to use a pythagorean identity?

**Math**

I do not get this question at all,this is composite functions and all my answers to a) to c) is wrong,can someone please help me with this problem :)? Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a ...

**Math**

I think this is suppose to be composite function

**Chemisty**

how many grams of propane would be burned with 80.0g of oxygen?

**Math**

Determine the composite function of F(x)= sin x and g(x)=x

**Math**

Determine the composite function of F(x)=2^x and g(x)=3-x

**Chemistry**

A concentration of PCl5(g), 4,0 mol/L, it appears that the proceeding PCl5(g) => PCl3(g) + Cl2(g) is achieved with a degree of balance of 20%. In these conditions, calculate the value of chemical equilibrium

**i dont know how to solve this**

Which number is a solution to the inequality 3x − 2 > 10? A 2 B 3 C 4 D 5

**i dont know how to solve this**

A taxi charges $2.25 for a ride, plus $0.25 for every 1/4 mile. Which inequality represents how many miles, x, a person could travel with $8.00? A $2.25 + $0.25x ≥ $8.00 B $2.25 + $0.25x ≤ $8.00 C $2.25 + $1.00x ≥ $8.00 D $2.25 + $1.00x ≤ $8.00

**i dont know how to solve this**

What is the value of x in the equation 6 + 2/3x=9 ?

**how to set up this problem**

Caleb has a piece of wood that is 156 inches long. He wants to cut the wood into 2 3/4 -foot sections. How many whole 2 3/4 -foot sections can Caleb cut? A 57 B 56 C 5 D 4

**math please explain**

Apples cost $1.62 per pound, and bananas cost $0.48 per pound. What is the total cost for 2 1/2 pounds of apples and 1 1/3 pounds of bananas? A $4.69 B $4.55 C $3.77 D $3.36

**Math**

would 450 nickels be greater than 25 quarters

**Math**

Since I am converting 450 nickels to 25 quarters would 450 nickels be greater or less than 25 quarters

**Math**

So would it be: 450*0.5 and 25*0.25

**Math**

I am stuck on this. I am converting 450 nickels to 25 quarters to see which is greater. Can you explain or show me how to do this.?

**math**

Assume an 18 month CD purchased for $7000 pays an APR of 4% compounded monthly. What is the APY? 2 decimal places

**math**

Assume an 18 month CD purchased for $7000 pays an APR of 7% compounded monthly. What is the APY? APY = ___% Round the answer to two decimal places

**math**

Assume an 18 month CD purchased for $7000 pays an APR of 7% compounded monthly. What is the APY? APY = ___% Round the answer to two decimal places The previous answer was not correct so they changed the question.

**math**

Sorry... Assume an 18 month CD purchased for $7000 pays an APR of 7% compounded monthly. What is the APY? APY = ___% Round the answer to two decimal places

**math**

Can you please help me I've tried over 30 times on this problem please show me the formula that I need to come up with the answer... Assume and 18 months Ed purchased for 7000 days and APR of 5% compounded monthly. What is the APY? They want me to round the answer to two ...

**math**

That answer was wrong...so I reposted the new question and made sure I typed it right which was my fault.The new problem is now at 7%. They want the APY %

**math**

Can you please help me I've tried over 30 times on this problem please show me the formula that I need to come up with the answer... Assume and 18 months Ed purchased for 7000 days and APR of 5% compounded monthly. What is the APY? They want me to round the answer to two ...

**math**

Assume a 30 month CD purchased for 2000 pay simple interest at an annual rate of 5.5%. How much total interest does it turn what is the balance at maturity. They want to know the total interest and the balance at maturity and they want us to give our answer to two decimal places

**math**

Assume an 18-month CD purchased for $7000 pays an APR of 7% compounded monthly. What is the APY? (Fill in the blank below and round your answer to 2 decimal places.) APY = %

**math**

i know but it was wrong so it change %

**math**

Assume an 18-month CD purchased for $7000 pays an APR of 5% compounded monthly. What is the APY?

**math**

Assume an 18-month CD purchased for $7000 pays an APR of 3% compounded monthly. What is the APY?

**Maths, Function image sets**

Need a bit of help. Trying to find the image sets of two recipricol functions. The first g(x)=1/(x-2)+5 (x not equal to 2) The second g(x)=1/(x-2)+5 (x>2) Now its quite easy to draw/sketch the graph but ive not really dealt with image sets of recipricol f functions before ...

**English**

I have to write a rational for my English class, however I'm stuck on what to write next. The question is: What are the obstacles we face in life, and how they help us become who we are? We are supposed to both relate to real life, and a text that we read in class. I chose...

**Math**

1. -9p - 17 = 10 2. x over 3 - 10 = 12 3. x over 4 + 10 = 14

**math**

A population of 240 birds increases at a rate of 16% annually. Jemel writes an exponential function of the form f(x) =abx to represent the number of birds after x years. Which values should she use for a and b?

**Math**

Lila graphed the points -2 and 2 on a number line. What does the distance between these two points represent?

**Math**

Im wondering for this question if I'm right and going toward the right direction. Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than ...

**Math**

Rewrite the following exponential functions as logarithmic functions, and the logarithmic functions as exponential functions: f(x)=(7/8)^x b) f(x)=log12x c) f(x)=log5/9x

**Math**

Rewrite the following exponential functions as logarithmic functions, and the logarithmic functions as exponential functions a) f(x)=(7/8)^x b) f(x)=log12x c) f(x)=log5/9x

**economics**

Suppose three neighbors must vote on installation of a traffic light that costs $210. All three will share the cost of the light – that is, each person will contribute $70 to the installation. Leona values the light at $50; Lionel values the light at $50; and Theo, who ...

**chemistry**

You have 310. mL of a 5.75×10-5 M Pb(NO3)2 solution. How many moles of NaCl must be added to precipitate a solid? The Ksp of PbCl2 is 1.6×10-5. I'm not sure where to go after I make the ICE table

**Math**

water flows from a faucet at a rate of 5 liters every 25 seconds. At this rate, how much water will flow form the faucet in 45 seconds. Make a table.

**math**

water flows from a faucet at a rate of 5 liters every 25 seconds. At this rate, how much water will flow form the faucet in 45 seconds. Make a table.

**math**

the first part is wrong it is 6 because you use 22.5 divided by cos 15

**Algebra**

Steve made a business trip of 254 miles. He averaged 57 MPH for the first part and 56 MPH for the second part. If the trip took 4.5 hours, how long did he travel at each rate?

**Philosophy**

The following argument appeared in the draft of a bill before the Louisiana State Legislature in 2001: Whereas, the writings of Charles Darwin, the father of evolution, promoted the justification of racism, and his books On the Origin of Species and The Descent of Man ...

**Math**

Sally has 4.5 cups of sugar. She needs to bake brownies for for a bake sale. If each batch of brownies requires 2/3 cup of sugar, how many batches of brownies can she make?

**Physics**

Instead of the frictionless wheel in problem 7, imagine that the rope is tied to a frictionless pulley with radius R but an unknown moment of inertia. If the pulley always has half as much kinetic energy as the block, what must be its moment of inertia? The block has a mass m.

**Calc**

Gravel is being dumped from a conveyor belt at a rate of 20 {\rm ft}^3{\rm /min}. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 18 ft high?

**Math**

Wrong answer

**Algebra**

Mira’s boat goes 12 mph in still water. It travels 45 miles upstream and back in a total time of 8 hr. What is the speed of the current?

**Algebra**

The time t required to empty a tank varies inversely as the rate R of pumping.If a pump can empty a tank in 50 min.at a rate of 650 k?L/min, how long will it take the pump to empty the tank at 500kL/min?

**Algebra**

A 42 ft guy wire reaches from the top of a pole to a point on the ground 15 ft. from the pole. Find how high up the pole does the guy wire reach?

**Interest**

Find the amount of the annuity if the deposit is $800 quarterly for 6 years at 9% compounded quarterly. Amount=?

**Compound interest**

The cost of the stereo is 2526.87 i just cant figure out the amount of interest paid, i do I=P*R*T and get 397.87 or something like that and it says its wrong

**Compound interest**

Stereo Inc. sells a stereo system for $200 down and monthly payments of $70 for the next 3 years. If the interest rate is 5.25% per year, find: a) The cost of the stereo. Answer = $ b) The total amount of interest paid

**Chem**

Thank you for your help.

**Chem**

If 0.256 g of a compound containing only carbon and hydrogen atoms is burned efficiently and 0.780 g of carbon dioxide and 0.356 g of water are produced, how many moles of H-atoms are contained in the original (0.256 g) sample?

**PLEASE HELP MS SUE!!!!!!!!!!!!!!!!!!!!!4**

Its Output cell

**Chemistry**

Two aqueous solutions, both at 25.00°C (100.0 mL of 0.223 M Pb(NO3)2 and 100.0 mL of 0.144 M Na2S), are mixed together in a calorimeter with a Ccalorimeter of 11.8 J/°C. The temperature of the solution increases by 2.40°C. Assuming that the density and heat ...

**Computer programming**

I am trying to write a program in C that would be used by a car rental company. This program finds the subtotal, tax amount(6%) and finally the total. The user enters in how many days the car was rented and how many miles were driven. The total is based on this logic. The cars...

**Math 142 (calculus)**

Determine d^2y/dx^2 for y=(5x^5+7)^4

**Calculus**

Find c so y=4x+3 is tangent to the curve y=x^2+c

**Calculus**

An open box with a capacity of 36,000 cubic inches is to be twice as long as it is wide. The material for the box is $.10/sq ft. What are the dimensions of the least expensive box? How much does it cost?

**Calculus**

An open box is made by cutting squares of side w inches from the four corners of a sheet of cardboard that is 24" x 32" and then folding up the sides. What should w be to maximize volume of the box? I started by trying to get a formula for the volume which I thought ...

**Chemistry**

@Dr.Bob222 I was answer that answer before but it was wrong

**Chemistry**

oh Ka is 3.5x10^-4. Sorry about that

**Chemistry**

What is the pH of a 0.0050 M solution of sodium fluoride? I got 7.58 for pH. Is it correct? but I try to plug in my quadratic formula, I don't get the pH 7.58. I'm really confuse. Please help.

**Math**

Tell if x and y show direct variation. Explain reasoning. 1) x=2y 2) y-x=6 3) xy=5

**Physics**

Draw a free body diagram and Apply Newton's 2nd law in both direction. 60 kg chair is pulled along a rough horizontal surface under the action of a 200N force 30 degrees up from horizontal, as shown the acceleration of the chair is 1.5 m/s^2. a) Determine the normal force ...

**Comma question**

Please use correct place comma for this sentence - Louisa bought mangoes and papayas and oranges.

**Spanish**

Thank you! that helped a lot!

**Spanish**

Esta mañana nos (1) _____ temprano en carro sin mapa. Al (2) _____ de la ciudad, Jorge (3) _____ al empleado de una gasolinera dónde (4) _____ el carril para acceder a la autopista. El empleado no (5) _____ contestarle porque no (6) _____ a dónde (7) _____...

**SPAnish**

Modifique el texto por cambiar los verbos italizados de lo familiar (informal) a lo formal Prepara (1) _____ para salir de viaje el lunes por la mañana. Para ello, haz (2) ______ las maletas, sal (3) _____ de la habitación y métete (4) _____ en el coche. ...

**probability**

The National Center for Educational Statistics reported that in 2009 the ACT college placement and admission examination were normally distributed and had a mean of 21.1 and standard deviation of 5.1. A college requires applicants to have an ACT score in the top 20% of all ...

**AP Physics I**

A placekicker is about to kick a field goal. The ball is 26.6 m from the goal post. The ball is kicked with an initial velocity of 19.0 m/s at an angle θ above the ground. Between what two angles, θ1 and θ2, will the ball clear the 2.8-m-high crossbar? (Hint: ...

**Spanish**

1 of 15 I tried to get there on time, but there was an accident on the freeway: Yo ____(1)____ llegar a tiempo, pero ____(2)____ un accidente en la autopista. Options 1-quise or queria 2-hubo or habia Answers 1- quise 2 -habia 2 of 15 They refused to admit that you already ...

**probability**

You and your friend just rented a car for an 8,000 mile cross-country road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability 0.08. If the car is ...

**Physics. Help Please**

Gabriele enters an east-w straight bike path at the 3.0-km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0-km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele as a function of time...

**probability**

You and your friend just rented a car for an 8,000 mile cross-country road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability 0.08. If the car is ...

**SPANISH**

EL PRETÉRITO. Modifique el párrafo por cambiar los verbos italizados al pretérito. Ejemplo: Tenemos que preguntarle al revisor. Tuvimos que preguntarle al revisor. Voy___(1)___ a coger el tren para irme de vacaciones a la sierra. Ya no me queda___(2)___ ...

**probability**

You and your friend just rented a car for an 8,000 mile cross-country road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability 0.08. If the car is ...

**math**

An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire trip took three hours. ...

**math**

The weight of a bag of bricks plus 20% of its weight is 30 pounds. How much does the bag of bricks weigh, in pounds?

**Stats**

Explain what it means to have a deviation score of -18

**Statistics**

Assume that the unit of measure for each of the values in the sample is in dollars. What would be the units of measure for the sample: a) mean? b) range? C) Variance? d) Standard deviation?

**probability**

Alice and Bob each choose at random a number between zero and two. Consider the events events A: The magnitude of the difference of the two numbers is greater than 1/4. Event B: At least one of the numbers is greater than 1/4. Event C: Alice’s number is greater than 1/4. ...

**probability**

You and your friend just rented a car for an 8,000 mile cross-country road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability 0.08. If the car is ...

**probability**

Anne and Bob each have a deck of playing cards. Each flips over a randomly selected card. Assume that all pairs of cards are equally likely to be drawn. Determine the following probabilities: (1) The probability that at least one card is an ace, (2) the probability that the ...

**World Geography**

if 1/2 inch equals to ten miles how many inches are there in thirity miles ?

**Algebra**

Write 3 different algebraic expressions that uses x,y, and z and simplifies to the given value when x=-3, y=-2, and z=-1. The expression should involve only multiplication or division. Values are: 1, -16, and 12.

**Algebra 2**

1. A bag contains 12 red checkers and 6 black checkers. You will randomly select two checkers, one at a time, without replacement. (a) In how many ways can you select two checkers so that at least one of the checkers is red? List the ways. (b) What is the probability that you ...

**math**

A plane is flying at 168 miles per hour with a heading of 43.5° from due north. The wind is blowing a constant 33 miles per hour at 133.5° from due north. Find the ground speed and true course of the plane.

**science**

i think its A

**science**

Which of the following chemicals is insoluble in water? A. C6H6 {benzene) B. HCI (hydrochloric acid) C. NH3 (ammonia) D. NaHC03 (sodium bicarbonate)

**Physics**

45.24

**Sophia**

650ft/117.3ft/s=5.5 Is NOT the answer. Nor is 40.6 nor 7.4 nor 8.8 nor 16.2 nor 6.5. Nor is 0! Thinking they didn't stop at all before the crash!

**Sophia**

Algebra

**Sophia**

The following formula relates the distance S (in feet) traveled by a vehicle during an emergency stop to the time T (in seconds) it takes to arrive at a complete stop: s(t)=16t^{2} At the scene of an accident, Bill uses skid marks to determine the braking distance of one of ...

**History**

Ms Sue I am not understanding that is the Maccabean Revolt written for the gentiles to read in the future? Or is it for the Jews so they are aware of the past

**History**

What was the purpose of account of the Maccabean Revolt? Who was the intended audience?

**experiment physics**

Stress ke cari jawapan x jumpe