# Posts by juan

Total # Posts: 291

**Math**

The surface area of the Sun is about 4x3.141x(7x10^5)^2 square kilometers. Simplify the expression

**PHYSICS**

Wanda is pushing a stroller and starts from rest, uniformly accelerating at a rate of 0.500 m/s2. What is the velocity of the stroller after it has traveled 4.75m?

**Math **

Compare: x + y O 19

**Math**

Nico is saving money for his college education. He invests some money at 9?%, and ?$1100 less than that amount at 6%. The investments produced a total of ?$249 interest in 1 yr. How much did he invest at each? rate?

**Physics**

@Damon thanks a lot!

**Physics**

It's not correct, that´s what the platform says

**Physics**

A 0.60-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 9.0 N for a distance of 2.0 m. How much farther would the force have to act for the block to have 72 J of kinetic energy?

**Math**

Two squares are drawn. The larger square has area of 400 square inches. The areas of the two squares have a ratio of 1 : 4. What is the side length s of the smaller square?

**Geometry**

a regular triangular pyramid has all of edges of length 36. What is the angle between any two faces of this pyramid.

**physics**

thank u Damon

**physics**

A half-cup of ice cream contains about 200 food Calories. How much power can be produced if the energy in a cup of ice cream is expended over a period of 10 minutes (600 seconds)? Each food Calorie is equal to 4,184 joules. Write your answer in watts and then in horsepower

**Check spanish answers**

Gracias 100%

**Math**

A week has five school days and two weekend days.

**Research Methods**

7. Consider the following hypothetical outcome of a two-way factorial designs [8 points] Pink/Car Pink/Bike Blue/Car Blue/Bike 58 56 70 21 45 96 69 25 61 88 28 31 59 78 53 23 23 59 65 79 19 65 20 17 48 41 51 18 33 22 69 28 65 46 87 35 27 10 39 20 38 17 75 29 42 29 96 24 66 19 ...

**Math**

Emily bought a pie. Emily ate 2/3 of the pie and Ryan ate 1/5 of the pie. How much of the original pie is left?

**Math**

driver a is going west at 60 mph driver b leaves 3 hours later at a rate of 72 mph how long until driver b catches up to driver A

**geometry**

triangle xyzangle y=90,anglez=60,xz=12cm then what is the length of sideyz

**Algebra**

Find a polynomial function of degree 4 with −2 as a zero of multiplicity 3 and 0 as a zero of multiplicity 1. f(x)= Thank you!

**Algebra**

Find a polynomial function of degree 6 with −1 as a zero of multiplicity 3, 0 as a zero of multiplicity 2, and 1 as a zero of multiplicity 1. The function is f(x) =

**Algebra**

Kerry's car averages 25 mpg. She wants to find how far she can drive based on the gallons in her car. Choose the correct model fo this situation 25=d+g D=25g G=25 ( d is distance in miles and g is gallons of gas) What is the slope ? How far can she travel if she puts 7 ...

**english 9**

Which values of the ancient Greeks are most emphasized in this excerpt?

**ecuaciones diferenciales**

Y'''+10y''+25y'=e^x

**Math**

Dan deposited $4000 into an account with 4.8% interest, compounded monthly. Assuming that no withdrawals are made, how much will he have in the account after 9 years? I was just wondering of the formula for this problem, because I am not able to find it in my book.

**math**

solution of if 2/7 of the 2905 student and if 30 % of the student play musical instruments, how many student play musical instruments?

**math**

IF 2/7 OF THE 2905 STUDENTS ARE FRESHMEN,AND IF 30% OF THE FRESHMEN PLAY MUSICAL INSTRUMENT,HOW MANY FRESHMEN STUDENTS PLAY MUSICAL INSTRUMENTS?

**algebra**

help me on the result of 3CSC{A}-Y6=0 or gave me exmples thank you

**Trigonometry**

two sightings of the top of a flagpole are taken 75 meters apart on level ground. The two sightings are 21° and 32°. What is the height of the flagpole?

**Math**

Points J and K, plotted on the coordinate grid, are two vertices of rectangle JKLM. Rectangle JKLM has an area of 7 square units. Point J is located at (2, 1) and point K is located at (-5, 1). Each vertex of the rectangle is located at a point that has integer coordinates. ...

**physics**

A small block of mass 2.7 kg is released from rest at the top of the curved frictionless ramp shown. The block slides down the ramp and is moving with a speed of 13.9 m/s when it collides with a larger block (1.5 times the mass). (Use g=10m/s²). If the larger block moves ...

**Math**

A community needs to raise at least $5000 to build a new skateboarding park. They are selling backpacks for $25 each to raise the money. Write and solve an inequality to determine the minimum number of backpacks they need to sell in order to reach this goal.

**Math**

A sales associate at a computer store receives a bonus of $100 for every computer he sells. He wants to make $2500 in bonuses next month. Write and solve an inequality to find the minimum number of computers he must sell.

**Who Am I**

I have 45 in the denominator I am equivalent to 4-9. What fraction am I?

**physics**

In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression x = 4.7 cos ( 4t + π/6 ) where x is in centimeters and t is in seconds. Find the period of the motion.

**Algebra**

Greg invested his savings in two investment funds. The amount he invested in Fund A was 3 times as much as the amount he invested in Fund B. Fund A returned a 6% profit and Fund B returned a 7% profit. How much did he invest in Fund B, if the total profit from the two funds ...

**Language Arts (2 questions)**

Lovve Bae is correct on all answers.

**math**

Your school is organizing a carnival. You are building a ramp for a game. The ramp will be 8 feet long with a total rise of 5 feet. Find the angle of elevation of the ramp.

**mathematics**

A patient gets tested for a disease. The test is 90% reliable (that is P(testing positive│have disease)=.9 . 2% of the population has this disease. The test gives a false positive 5% of the time (that is P(testing positive│NOT diseased)=.05). What is the ...

**Math**

A certain clock gains 3 minutes every hour if this clock shows the correct time at 6:00 an what time will the clock show when it is 1:00 pm of the same day?

**chemistry**

What is the percentage by mass of sodium (Na) in a formula unit of sodium hydrogen carbonate (NaHCO3)?

**physics**

What would the mass of a bowling ball be if it were to travel m/s with a momentum of 7000kg.m/s

**La**

5,-15,45,-135 is it arithmetic , geometric or neither ?

**Jefferson**

lisa is 6 years older than Tom. Their father's age is twice the sum of their ages. How old is lisa if her dad is 32?

**math**

Max and Jack bought a large pizza to share.Max ate 5/8 of the pizza.What fraction of the pizza was left for Jack.

**statistics**

you did it correctly. you just have to take the negative z score of -1.6 and convert it to a percentage that's to the left of that. to 4 decimal places it's .0548

**math**

ginger sent 18 text messages yesterday.jerry sent 4 more than twice as many messages as ginger sent. kyle sent 15 fewer messanges than jerry.how many test messges did jerry and kyle send?

**Math**

. Lopez has $9118 in her bank account on March 1st. She saves $609 in March. Then she must pay $1011 in taxes in April. Mrs. Lopez is able to save $705 in May. At the end of May, approximately how much greater or less is her account balance than it was on March 1st?

**Math**

A single processing machine makes two components, A and B, which are packaged together as the final product (each product sold contains one A and one B). The processor can make only one component at a time. There is a setup time when switching from A to B and back. The current...

**Trigonometry and Analysis**

Oscar has twice as many pennies than he has dimes. All together he has $.84. How many dimes and pennies does he have? I tried to solve this, but I know I did it wrong, because I got a decimal for the amount of dimes. Here's what I did: P=D*2 (.01)(P)+(.10)(D)=.84 (.01)(D*2...

**Microeconomics**

suppose Belgium produces only two goods, chocolate and lace. If Belgium has a comparative advantage in lace, a move toward free trade will a. benefit chocolate workers, harm lace workers in the short run, but benefit the nation as a whole. b. harm chocolate workers in the ...

**Microeconomics**

A ban on imported avocadoes will result in_______ a. an increase in the total surplus because domestic production will increase. b. no change in total surplus because the reduction in consumer surplus will offset the increase in producer surplus c. a reduction in total surplus...

**Microeconomics**

Thanks for the link and I will read more on this subject matter.. thanks again

**Microeconomics**

Okay, Ms. Sue this is very confusing for me is the answer A?

**Microeconomics**

okay, B. they lower the surplus in the market.

**Microeconomics**

taxes may cause deadweight losses because________. a. they transfer purchasing power from buyers to the government. b. they lower the surplus in the market. c. they increase consumer surplus at the expense of producer surplus d. they transfer purchasing power from sellers to ...

**English**

however; they all seem to have consonance and i could find a possible paradox in a,b, and c.

**English**

Which poetic line contains both paradox and consonance? A. One summer day, all day I drove it hard B. How long it might last, how young it might be C. Ay, look, and he'll smile thy gloom away D. At least to know the worst is I'm leaning towards c. being the right answer

**Economics**

Thanks for your thoughts

**Economics**

Why the private market for flu vaccinations would produce an inefficient outcome?

**Microeconomics**

suppose Belgium produces only two goods, chocolate and lace. If Belgium has a comparative advantage in lace, a move toward free trade will a. benefit chocolate workers, harm lace workers in the short run, but benefit the nation as a whole. b. harm chocolate workers in the ...

**Microeconomics**

D. all of the above

**Microeconomics**

Medical doctors earn higher incomes than people who have a Ph. D in economics. This is partly because A. Medical doctors are more likely to face malpractice lawsuits. B. The costs of receiving necessary medical education are higher C. A relatively small number of students are ...

**Science(need help)**

1) What evidence is there that the human species has been successful so far? Explain. 2) What environmental pressures in the past do you think were most important in shaping the human species as it exists today? 3) What environmental pressures exist now that you think may be ...

**calculus**

A ball is thrown from an initial height of 130 feet with an initial upward velocity of 35ft/s . The ball's height H (in feet) after T seconds is given by the following h=130-6t-16t^2

**Calculus study**

A baseball team plays in a stadium that holds 52000 spectators. With the ticket price at $9 the average attendance has been 21000. When the price dropped to $6, the average attendance rose to 26000. a) Find the demand function p(x), where x is the number of the spectators. (...

**language arts**

a,sdvhflahsvbfl

**chemistry**

How many grams of hydrogen are released by the reaction of 1.00 g of aluminum with excess potassium hydroxide solution assuming 100% yield

**math**

I do not know help me get past the border though

**Probability**

1. Is Y2+Y3 independent of Y1? NO 2.Is Y2?Y3 independent of Y1? YES

**Calculus**

42 ,ets

**Fine Art**

They depict humans as being small alongside towering trees and mountains.

**physics**

In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic energy of the ball when it reaches the ...

**Science**

Calculate the denstiy of a block if the volume is 20.0cm3 and the mass is 40.0 g

**Physics**

You throw a ball towards a wall at 15ms-1, and it bounces back at 10ms-1. What is the total change in velocity? (the answer is not 5m/s)

**math**

Paul has two thirds as many postcards and shawn the number of postcards shawn has three fifths of a number of postcard tim has if three boys have 280 postcards altogether how many more postcards does Tim have than Paul

**Physics**

A box weighing 178N slides down a ramp with an initial velocity of 0.5m/s^2. The ramp has an angle of 24 degrees and is 3m long. What is the acceleration of the box? I know that F=ma but how do I find a?

**Organic Chemistry**

Thank you.

**Organic Chemistry**

Also, the solvent used for extraction is ethyl acetate. So, the organic mixture to be separated by extraction dissolved in ethyl acetate.

**Organic Chemistry**

What type of info must I supply? Or is it too much info to be asked? If I can reclarify.. In the experiment, I am separating an unknown organic mixture of two solids by extraction. From this I will get the Basic layer, and acidic layer, both will be the source for isolating ...

**Organic Chemistry**

Hi, I did an extraction experiment. I've got my basic layer, and getting my acidic salt in return. To do this, I am instructed to first "add a small amount of NaCl to help with the product precipitation". Then, again I am instructed to add HCl to "acidify&...

**Statistics**

Carrie attained a score of 650 on the verbal section of her SAT. The mean grade was a 500 with a standard deviation of 100. What percentage of test takers scored below and above Carrie?

**math**

17/38

**Math**

19

**MATH HELP**

Eduardo thinks of

**Math**

greatest number means GCF? If your answer is yes, the answer will be 7?

**Math**

Dominic collects sports science fiction and history books. He has 21 books about sports, 35 books about science fiction, and 14 about history. He wants the same number of each type of book on each shelf. What is the greatest number of each type of book on each shelf?

**Algebra**

Shelly made 5 more sales calls than Clark . Shelly and Clark made a total of 33 sales calls. How many sales calls did each make .

**Macroeconomic**

Income taxes create a difference between the interest rate paid by companies and received by lenders. These taxes___________ saving, investment, and the growth rate of real GDP. A. Do not affect B. Lower C. Encourage, but may not change D. Increase The answer is C

**Macroeconomic**

An increase in the capital stock will: A. Shift production function downward. B. Shift the production function upward C. Flatten the production function D. Steepen the production function The answer is B?

**Macroeconomic**

Suppose that a market for a product is in equilibrium at a price of $5 per unit. At any price above $5 per unit. A. There will be an excess demand for the product. B. There will be an excess supply of the product. C. The quantity supplied of the product will be less than the ...

**Macroeconomic**

Thank you

**Macroeconomic**

All of the following statements are true of the Federal Reserve EXCEPT: A. Acts as the central bank for all countries in the world. B. Along with the Board of Governors, the chairperson of the Federal Reserve determines monetary policies and strategies based on state of ...

**Intro to computers**

Which type of updates should be installed in a test environment before being installed in a live enterprise environment.? A. Updates for Wkndows XP B. Recommend Updates C. Service Packs D. Security updates

**Finance**

The projected revenues and costs that form the basis of the potential for a project's acceptance or rejection are estimates of ______________. A. Future activity B. Past activity C. Known activity D. Current activity

**algebra**

Matthew would like to join an online book club that costs $84 per year. If he signs up for an automatic renewal, he will get 5% off his membership. If he signs up in July, he can get an additional 20% off. In addition, for every 2 people he refers to the club, he can get $5 ...

**Geometry**

B. 1/5

**Math**

pinche steve. ponete esmart

**Math**

if u cut the circle in half, and put the shapes on the side of the square u make a heart steve

**Physics**

two objects attract each other gravitationally with a force of (2.5)(10^-10)N when they are 0.25m apart. Their total mass is 4.0 kg. Find their individual masses.

**ASU**

Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is the magnitude of the force on an electron between the plates? N (c) How much ...

**probability**

The events A, B, C are disjoint events and P(A)=2/5. P(A?(Bc?Cc)c)= 0.4 P(A?(Bc?Cc)c) = 0.75 P(A?(Bc?Cc)c) =0.3