# Posts by j

Total # Posts: 1,028

Science

Math
I am not going to give you the exact answers, for that would be cheating, but I will give you some answers and let you use the information to form the explicit formula. It is an arithmetic sequence. Each year, the houses money value goes down by 15,000 dollars. by the time it ...

science
forgot that last calculation :)

science
@Chanz, oops my bad, you are correct. Vf-19.6 m/s= (9.8 m/s/s)(5 s) Vf-19.6 m/s = 49 m/s Vf= 68.6 m/s

science
t=19.6/2 v=5 * 9.8 =49 m/s

Math
I agree, all you have to do is type in your calculator 1000 x 1.5, then move the decimal to the left 2 times and you get 15 dollars

Geometry
True; that would be called an isosceles trapezoid.

Chem
joules needed to melt 30.0 g of ice at 0 ∘C and to warm the liquid to 60.0 ∘C so i did Q=mFf which i set up like 30.g x 334 j/c = 10020 J then i'm sorta confused what i'm doing next. explain in detail please?

math
@Ms.Sue how are you going to say that when i see you everywhere giving your "students" the answers

Social Studies
How does recycling influence culture

the girl that has no friends is tottaly right

Language
i believe it is C.

Math
thank you

math
according to the triangle inequality, the length of the longest side of a triangle bust be less than the sum of the lengths of the other two sides. the two shortest sides of a triangle measure 3/10 and x + 1/5 and the longest measures 3/2x. write an inequality that uses the ...

Math
j

critically evaluate this statement 'an international retailers preferred market entry method directly affects its market Selection decisions

Math
11

math
If it takes a lawn company 5 hours to cut 6 lawns, how many yards can be cut in 12.5 hours?

Child Development and Human Behavior
. Which of the following factors helps a child develop a positive self-concept? A. Material wealth B. The sex of the child C. Family relationships D. Conflicts with teachers

civics
@Reed I think #1 would be A, #3 would be C, and #2 would be B. Am I correct now?

civics
Please check my answers! 1. The Nineteenth Amendment granted women the right to vote, but women had been fighting for years for this right. Before the Nineteenth Amendment was passed, which existing amendment could women have used to argue that they should have the right to ...

History
Yes, C.

Chemistry
If you want to prepare 2.0 liters of a .25 M solution of NH4Cl, how many grams of the salt should you weigh out?

Chemistry
Assume you have prepared 100.0 mL of a buffer solution using 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate. The pH of this buffer solution is initially 4.74. After preparing this buffer solution, you added 55.0 mL of a 1.10 M NaOH solution to your ...

Chemistry
A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final pH of 10. Which components should they mix in water to product this buffer? Question options: H2CO3 HCO3- CO32-

Chemistry
A chemist needs to prepare a buffer using the carbonate system (information in the table below) with a final pH of 6. Which components should they mix in water to product this buffer? H2CO3 HCO3- CO32- pKa 6.35 10.33 N/A

Chemistry
The pH of a buffer can be predicted using the Hendersen-Hasselbach equation: pH=pKa+ log([conjugate base][conjugate acid]) The choice of the conjugate acid-base pair (as you did in the previous questions) determines the pKa value to be used in the H-H equation. By varying the ...

Help Math PLZ
deez nuts is right! 10/10!

Chemistry
365

Science
A 6.90-g sample of solid NiSO4·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?

Math
Quinn

precalc
Solve in radians. 1) sin2X = 1/2 2) tan2 (X + pi/2) = 1 3) 5 - 3sec (X - pi/4) = -1

Physics
A boat moving at 5 mi/h is to cross a river in which the current is flowing at 3 mi/h. In what direction should the boat head to reach a point on the other bank of the river directly opposite the starting point?

jones
What is greaterthan 40 and less than7 tens

geometry
I need help to did anyone answer this

Science
no it is true not false

W
Some people in a hotel are dropping water balloons from their window onto the ground below. The balloons take .15s to pass your 1.6m tall window. Where should security look for the raucous guest? Express your answer using tow significant figures.

Algebra
On successive plays, the home football team gains 12 yd, loses 3 yd, loses 5 yd, gains 15 yd and runs 16 yd for a touchdown. What is the average gain or loss in yards per play?

chem
The half-life of the Nobelium isotope No^257 is about 23 seconds. 644 seconds (or 28 half-life periods) after the isotope was released there were 20 grams remaining. The number of grans of No^257 after h half life periods is M= 20 * (1/2)^h where h = 0 corresponds to 644 ...

algebra
Maria shares a house with 4 others. She pays \$500 rent per month plus her utilities. If the utilities cost a total of x dollars, how much more money,M, does maria owe Write an equation for how much maria owes.

math
The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean differences is_____. (Round your answer to the nearest ...

Chemistry
the volume for this question is 1 tsp. still not sure how to solve it.

chemistry
50cm3 of hydrogen is collected over water at 17 degree celsius and 750 mm Hg pressure.Calculate the volume of dry gas at S.T.P.The water vapour pressure at 17 degree celsius is 14 mm Hg?

science
,bb,j

do your own work, i only come here check work!

Art and Creative Development
Art helps children socially because: A. they can make artistic products for others to see at art shows B. during are activities, they interact and learn social skills such as sharing and taking turns. C. they can make crafts that can be sold to other people. D. children cannot...

Art and Creative Development
Young children who learn easily, ask thought-provoking questions, and are very curious are often: A. gifted or talented B. behavior problems in the classroom C. poor at following directions D. overly shy and withdrawn socially i think it is between a and d but i am not sure

physics
two charges of equal magnitude are 25.5 cm apart if the force between the charges is 155 N what is the magnitude of the charges

math
Sam has 18 coins in his pocket that are either quarters or nickels. The total value of these coins is \$3.90. Let q represent the number of quarters and n represent the number of nickels. The following system of equations represents this situation: q+n=18 0.25q+0.05n=3.90 How ...

math
A community group bought 25 tickets to a play. Adult tickets cost \$30 each and student tickets cost \$20 each. In all, the group spent \$620 on the tickets. Determine if each equation is a part of the system of equations that can be used to find the number of each type of ticket...

Math
amy and anonymous are right 100% baby!

Geometry
Describe the difference between saying that two segments are congruent and saying that two segments have equal length. When would you use each phrase?

World History
Explain the impact of the Japanese attack on Pearl Harbor.

physics
find the weight of a person with a mass of 68.0kg

Language Arts
1. a is wrong it was b

How old is a sample that contains 125 atoms of U-235 and 375 atoms of Pb-207? ...Given that the half life values on my handout are 713 million years. *I do not even know where to start so could you please explain in steps too? Thanks.

finite math
Sam wants to invest the same amount at the end of every 3 months so that he will have 4000 in 3 years. The account will pay 6% compounded quarterly. How much should he deposit each quarter.

finite math
A young couple saves for a down payment on a house by depositing \$100 each month into an annuity that pays a 4.8% annual rate. Find the amount in the annuity at the end of 2 years.

winter wonder land is right

Math
420 people is t

Math
6 is right

math <3
yes that is right

Math!! Help ASAP
this stuff is so easy you guys should know this stuff!

Math
32

Chemistry
An electron has an uncertainty in its position of 507pm. What is the uncertainty in its velocity?

Art
Thanks, just got a 100%!!!

High School Algebra II
This website doesn't allow links so I had to be creative, i'm sorry. The link is h t t p://imgur. com/a/ZxWLk If you just remove the spaces, you can access the link.

High School Algebra II
Hey friends, I have a big assignment I've been given that I really, really could use an 100% on. I've been working on it for hours and have a decent amount done, have had teacher help, and have had friends work with me on it, but I still need help. If anyone has any ...

Math
c it is c

Math Help!
yes it is

Art
By the way, thanks Ashley!

Art
I think Ms. Sue is just jealous because she didn't answer it all right.

Art
those answers are wrong i got a 66.7%

Physics
My DONG

english
mr. bacon is right

chemistry
At 29.6 degrees C, pure water has a vapor pressure of 31.1 torr. A solution is prepared by adding 86.7 g of "L" a nonvolatile nonelectrolyte to 390.0 g of water. The vapor pressure of the resulting solution is 27.6 torr. Calculate the molar mass of "L"

Trigonometry
jijj

Art
midnight was right thanks

algebera
they are all wrong the real anwsers are bbcab

Geometry
ij ]

Geometry
544

Geometry
540

statistics
Produce a 99.9 % confidence interval for the population mean body temperature of a healthy male. Then do the same for the population of healthy females. Round your answers to three decimal places.

Chemistry
31.05

Math.
danny is right

ART HAVING HARD TIME
Mwah! Thanks, got 100%

math
A group of 4 doctors, 9 teachers, and 11 business leaders are going to form a committee of two. How many different ways can the committee be formed if it doesn't matter what the person's profession is?

United states history
National debt

finance
A stock has a beta of 2.0. A security analyst who specializes in studying this stock expects its return to be 24%. Suppose the risk-free rate is 6 percent and the market-risk premium is 10 percent. Is the stock overvalued or undervalued relative to the market’s ...

Algebra
I need help with my math pizzazz worksheet page 167 1.3x-5y=13 X-2y=5 2.7x-2y=-1 3x-4y=19 3.2x+3y=7 3x+4y=10

algebra
to conduct a scientific experiment, students need to mix 90 millimeters of a 3% acid solution. They have a 1% solution and a 10% solution available. How many millimeters of a 1% solution and of the 10% solution should be coming to produce 90 millimeters of the 3% solution .01x...

Chemistry
A) if you added 8g of ammonium nitrate to 25mL of room temperature water, what would be the temperature in °C?

MATH 100
The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one 10 times as strong as the other, are placed 9 ft apart, how many feet from...

1. Find the future value of current \$1,000 5 year from now when annual interest rate 8% is compounded annually 2. Find the present value of a future value (1,000) four years from now when annual interest rate 8% is compounded quarterly. 3.Find the present value of a four year...

Chemistry
The standard free energy change, ΔG∘, and the equilibrium constant K for a reaction can be related by the following equation: ΔG∘=−RTlnK where T is the Kelvin temperature and R is equal to 8.314 J/(mol⋅K). Calculate the equilibrium constant ...

History
Freed of assembly and press is basically like the News or the newspaper. It give the people the freedom to public current issue and information going on without being at risk of going to jail or killed.

Maths
6.35555 Meters tall?

chemistry
Let's say for example I have 5g of copper in a beaker. Mass would be 5g + mass of beaker. If I add any given amount of water to the beaker containing the copper, that will change the mass of the beaker containing the copper. Am I correct so far? So then if I pour out the ...

Chemistry
0.017

chemistry
Does one mole of copper have the same mass as one mole of iron? Explain. - I say no since: 1 mol Cu = 63.55g/mol 1 mol Fe = 55.85g/mol So 1 mol of copper is 63.55g, while 1 mol of iron is 55.85g. So they have a different mass because their molar masses are different, right?

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