# Posts by Marie

Total # Posts: 1,472

**physics**

A 1.30 × 10 4 kg railroad car moving at 6.70 m/s to the north collides with and sticks to another railroad car of the same mass that is moving in the same direction at 1.83 m/s. What is the velocity of the joined cars after the collision? Answer in units of m/

**grade six math**

Draw an equilateral triangle. Divide each side in half and join the points to make four small equilateral triangles. Rearrange these four equilateral triangles into a parallelogram. Compare the perimeter of the original triangle with the perimeter of the parallelogram. Explain...

**Physicss....**

Thank you(((:

**Physicss....**

Two carts with masses of 4.24 kg and 2.22 kg move toward each other on a frictionless track with speeds of 4.55 m/s and 3.16 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

**5th grade math**

408/3=136 136-5=131 136-7=129 136+131+129=396 408-396=12 12/3=4 Abel 131+4=135 Cindy 129+4=133 Belle 136+4=140

**algebra**

x^3y^2+512y^2

**Chemistry**

When 25.0g of Zn reacts, how many L of H2 gas are formed at 298K abd a oressure of 854mmHg?

**Accounting**

What impact does amt have on the decision to whether to use either the percentage of completion method or completed contract for reporting profit on longterm contracts?

**math**

rewrite this ad so it will be more effective: Three thousand five hundred dentists surveyed recommend sugarless gum to their parents who chew gum

**Algebra II**

The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size ...

**Algebra II**

If 750 m of 3.00-mm-diameter wire has a resistance of 27.6, what length of similar wire 5.00 mm in diameter will have the same resistance?

**math**

Convert each of the following repeating decimals to form, where a and b are integers and : __ a. 0.7 __ C 2.37 __ e 4.34

**math**

Bayside insurance offers two health plans. Under Plan A Giselle would pay the first $80 of her medical bills, plus 30% of the rest. Under Plan B Giselle would pay the first $140 but only 25% of the rest. For what amount of medical bills with plan B save Giselle money. Assume ...

**math**

Help with this word problem please! Bayside Insurance offers two health plan A, Giselle would have to pay the first $80.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $90.00 but only 20% of the rest. For what amount of medical bills ...

**Social Studies**

well as it say the letter is very accurate but as far as all i need its not enough i all of the work or else i will fail.

**math**

Help with this word problem please! Bayside Insurance offers two health plan A, Giselle would have to pay the first $80.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $90.00 but only 20% of the rest. For what amount of medical bills ...

**math**

Help with this word problem please! Bayside Insurance offers two health plan A, Giselle would have to pay the first $80.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $90.00 but only 20% of the rest. For what amount of medical bills ...

**algerbra**

This is the way the question is wrote . were the dollar sign is suppose to be the amount but I can't figure it out.

**algerbra**

Need help with this question I can get it. Bayside insurance offers two health plans, under A Giselle would pay the first $50 of her medical bills plus 35% of the rest. Under plan b Giselle would pay $180 in bills. Giselle would save with plan B if she had more then $ in bills.

**algerbra**

Need help with this question I can get it. Bayside insurance offers two health plans, under A Giselle would pay the first $50 of her medical bills plus 35% of the rest. Under planb Giselle would $180 in bills. Giselle would save with plan B if she had more then $ in bils.

**sentences**

Can you give me a sentence with the word eddies?

**Physics**

A small block of mass m1 = 0.500 kg is released from rest at the top of acurved-shaped frictionless wedge of mass m2 =3.00 kg, which sits on a frictionless horizontal surface as inFigure P9.60a. When the block leaves the wedge, its velocity ismeasured to be v1 = 3.20 m/s to ...

**physics**

When the play button is pressed, a CD accelerates uniformly from rest to 495 rev/min in 3.1 revolutions. If the CD has a radius of 6 cm, and a mass of 17 g, what is the torque exerted on it?

**psy**

I would like to know what are the main things that I need to know about what i need in my outline

**psy**

Outline, in a response, the main points that a therapist might cover in a counseling session to help each individual for each scenario. Your response should be 700 to 1,050 words in length. · Anna, an adolescent girl, is very much in love with her boyfriend who is three...

**chemistry**

How can you separate Ag+, Bi3+, Ni2+ in a solution? I am suppose to make a flow chart... would i use HCL to separate Bi3+ and Ag+ from Ni2+?

**Physics**

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials’ boat pulls up next to the spy’s boat, both boats reach the edge of a 5.4 m waterfall. The spy’s speed is 14 m/s and the officials’ speed is ...

**physics**

thank you, I initially thought of doing that but it was the wrong answer. Thank you though!

**physics**

A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it ...

**Chemistry**

Group III cations

**Chemistry**

How would you test a solution containing only Co2+ and Fe3+ ions?

**geometry**

how would you write an equation for a phone that cost $30 plus 30 cents per minute

**math**

deshawn and Luke had an equal number of stickers. After deshawn used 26 stickers and Luke lost 38 stickers. deshawn had twice as many stickers as Luke. how many stickers did each of them have in the beginning ?

**Hum186**

What are some of the most influential and important games released to the general public within the last few years? Why are they important?

**math**

3 Normally distributed Test scores for a police exam is a normal distribution TEST,150,20. 5) Find the probability that a randomly chosen candidate’s score is greater than 165. 6) Find the cut-off score for the top 10% of test-takers.

**math**

A gallup poll of 1236 adults showed that 14% believe that bad luck follows if your path is crossed by a black cat, so n=1236 and p=0.14 1.Find the mean? 2.Find the standard deviation? 3.Find the ND (np > 5 and nq > 5 ?) 4.Find the min, max of usual values by RROT

**Math**

If 2t + 3 = -9, what is the value of -3t - 7?

**science**

:)

**science**

thank you so much for helping me

**science**

72 pulse beats per a minute

**science**

if you count 12 pulse beats in 10 s what is the pulse rate in beats per minute

**science**

thank you so much :)

**science**

120cm/a day

**science**

:)

**science**

thank you so much

**science**

i got 3 cm

**science**

thanks

**science**

thank you i happy now i got my extra credit and home work done thanks for all the help from you :) :) :) :)

**science**

1.68km/for minutes

**science**

180

**science**

i got 1hour 13 min and 1.68 for km

**statistcs**

Bao Xishun is the world's tallest man with a hieght of 92.95 in. (or 7ft, 8.96 in.). men have hieghts witha mean of 69.6in and a standard deviation of 2.8 in. 1) convert Boa's height to a z score 2) does Boa's height meet the criterion of being unusual by ...

**statistcs**

The authors generac generator produces voltage amounts with a mean of 125.6 volts and a standard deviation of 0.3 volt. using the Chebyshev's theorem, what do we know about the percentage of voltage amounts that are within 3 standard deviations of the mean? what are the ...

**statistics**

the authors's generac generator produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volts, and the voltages have a bell-shaped distribution. using the empiral rule, what is the percentage of voltage amounts between 124.4 and 125.6 volts? ...

**statistic**

Chebyshev's thereon- the author's generac produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volt. using chebyshev's theorem,what do we know about the percentage of voltage amounts that are within 3 standard deviations of the mean? ...

**Geography**

thanks

**Geography**

False

**Geography**

True or False: Continentality does affect climate of a region.

**statistics**

Use x2prk formula to find the percentile rank of 84

**statistics**

Sketch the boxplot for mpuls and label it with the 5-number summary

**statistics**

Determine the quartiles q1, Med,q3, for mpuls

**statistics**

Determine the cvars of the entrance exams sat, 1518,325 and act 21.1,4.8

**statistics**

Use x2prk formula to find the percentile rank of 84

**statistics**

Sketch the boxplot for mould,and label it with the 5-number summary

**statistics**

Determine the quartiles q1,Med,q3 for mpuls

**statistics**

Determine the cvars of the entrance exams sat,1518,325 and act,21.1,4.8

**Algebra**

a sprinter ran 100-m dash in 9.92s. What was his soeed in feet per second

**Statistics**

Given the list 10,7,5,3,-6 find by hand, mean,meadian, midrange, mode(s), range, popvar, and sample standard deviation. (seven problems)

**chemistry**

how many grams of MgCl2 would you dissolve in 650mls of water to make a 0.45M solution?

**biology**

evidence for a reducing atmosphere

**math**

Using the terms factor, divisor, multiple, product, and divisible by, write as many statements as you can about the number sentence 4x7=28.

**math**

A polynomial that has zeros at 1, 2, and 3 with multiplicities of 1, 2, and 3 respectively. -Represent a function that satisfies the given conditions by an equation. Leave in factored form.

**math**

You should convert all of them to the same unit. I chose to use pecentages. California is already written as a percent 4.25% Montana: 1. Convert to a decimal by dividing 1 by 30 .0333. . . 2. Convert the decimal to a percent by moving the decimal two places to the right 3.3% ...

**math**

(10*8)*3 =10*(8*3) Associative Property = 10*24 =240 8*(3*5) = 8*(5*3) Commutative Property =(8*5)*3 Associative Property =40*3 =120 (36 + 42) + 24 = (42 + 36) + 24 Commutative = 42 + (36 + 24) Associative = 42 + 60 = 102

**algebra**

rounding to the first decimal place would be 1.1

**math**

My brother and I walk the same route to school every day. My brother takes 40 minutes to get to school and I take 30 minutes. Today, my brother left 8 minutes before I did. How long will it take me to catch up with him?

**algebra**

Remember to use the order of operations 8-4(-1)^2/2 8-4(1)/2 8-4/2 8-2 6

**algebra**

2(15) + 7(3)/30 30 + 21/30 51/30 (simplify by dividing by 3) 17/10

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...

**Physics II**

Find the work done in pulling a 120 gram box in an incline plane, 150 cm long and 90 cm high if the coefficient of friction is 0.25.

**math**

Use the formula nCr to solve Of the 100 people in the U.S. senate, 18 served on the Foreign relations Committee. How many ways are there to select Senate members for this committee (assuming party affiliation is not a factor in the selection)

**math**

Solve by the method of choice A book club offers a choice of 8 books from a list of 40. in how many ways can a member make a selection?

**m ath**

Use the formula nCr to solve Of the 100 people in the U.S. senate, 18 served on the Foreign relations Committee. How many ways are there to select Senate members for this committee (assuming party affiliation is not a factor in the selection)

**math**

using the fundamental counting principle with three or more groups of items There are three highways from city A to city B, two highways from city B to city C,and four highways from city c to city D. How many different highway routes are there from city A to city D?

**math**

Evaluate each factorial expression. 106! 104!

**math**

using the fundamental counting principle with three or more groups of items A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin,thick,crispy, or regular, and six choices of toppings (ground beef, sausage, pepperoni, bacon, ...

**math**

use the formula nPr to solve how many arrangements can be made using four of the letters of the word COMBINE if no letter is to be used more than once?

**math**

Evaluate each factorial expression. 106! 104!

**math**

using the fundamental counting principle with three or more groups of items There are three highways from city A to city B, two highways from city B to city C,and four highways from city c to city D. How many different highway routes are there from city A to city D?

**math**

using the fundamental counting principle with three or more groups of items A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin,thick,crispy, or regular, and six choices of toppings (ground beef, sausage, pepperoni, bacon, ...

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...

**math**

Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30-year fixed at 8%. Calculate the amount of interest paid for each ...

**math**

Determine the periodic deposit. round to the nearest dollar. how much of the financial goal comes from deposits and how much comes from interest. Periodic deposit %? at the end of each months Rate 8.25% compounded monthly Time 40 years Financial goal $1,500,000

**math**

find the interest rounded to the nearest dollar periodic deposit $60 at the end of each month Rate 5% compounded monthly Time 30 years

**math**

Using the present value formula you deposit $12,000 in an account that pays 6.5% interest compounded quarterly. A. find the future value after one year? B. Use the future value formula for simple interest to determine the effective annual yield?

**math**

a=16,00, r=11.5%, t=5 years determine the present value, p, you must invest to have the future value, a, at simple interest rate r after time t. round uo to nearest cent

**math**

its really easy... just find the area of all the wall except for the floor and ceiling. and subtract that by 140ft

**math**

886 sp. ft.

**English**

I really need help finding all the grammatical errors in the passage below. Look for commas, question marks, capitailzation and colons, semi-colons, commonly misused words. I did most of them I just need help in finishing. Students also realize that a traditional college ...