# Posts by ray

Total # Posts: 636

**Pre-Calc Help please?**

Thanks for replying Steve I just wanted to ask how did you get p(n) = (n - 107/12)/(n - 100/12) after solving for b and c?

**Chemistry**

Consider the thermal decomposition of potassium chlorate. 2 KClO3(s) ---> 2 KCl(s) + 3 O2(g) A mixture containing KCl and KClO3 weighing 1.80 g was heated producing 1.40 x 102 mL of O2 gas at STP. What percent of the original mixture was KClO3?

**maths**

I am a two digit no. If you subtract my second digit from my first digit the difference is 6. (i.e. 9-3= 6 or 8-2=6 or 7-1=6) The product of my digit is 0. What number am I? Could you please answer it as I did not understood the meaning of product of my digits is zero.

**Chemistry**

No answer

**math**

A cat can walk 2,190 miles in 2 hours. How can 2,190/2 be written in expanded form? 1) 2,000+100+90/2 2)200+90+1/2 Write it in quotation form.

**Statistics**

1/15

**definite integral**

approximate the value of the integral by use of the trapezoidal rule. n=8 a=0 b=4 sqrt 16-x^2

**Math word problem**

17 1/9 decreased by what number is 5 2/3? This is the answer I have 11 4/9. Is this correct.

**chemistry**

Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the:

**english plz plz help**

"When greek meets greek" is the story

**english plz plz help**

Which of the following lines of dialogue best reveals Ram's false heritage to the landlord? a. "You look like a man who could tell me the right place to go." b. "I am an Untouchable from the heart of India." c. "Man is forever studying ways and ...

**Chemistry**

How many moles of acetic acid are present in 10.00 mL if the concentration is 0.500M HC2H3O2?

**drivers ed test**

is it the first one?

**drivers ed test**

3. one way the national highway safety act helps drivers nationwide is by providing guidelines for maintenance on national highways requiring that all drivers have a federal drivers license providing drivers with insurance setting graduated drivers license privileges

**ANIMAL VEGETABLE MIRACLE**

What does Kingsolver receive for her birthday? What does she do with it? (106-107) What unusual package does Kingsolver receive at her local post office? (87)

**math**

Jerry is packing cylindrical cans with diameter 6 in. and height 10 in. tightly into a box that measures 3 ft by 2 ft by 1 ft. All rows must contain the same number of cans. The cans can touch each other. He then fills all the empty space in the box with packing foam. How many...

**criminal justice**

I'm looking for this same question...

**Math - hw check**

The admission fee for student is $8 and the admission fee for Adult is $15. In one hour, 12 adults and students enter the museum and a Total of $131 in admission was paid. Write a linear system to model this problem and solve this problem graphically. Check you answer by ...

**circle and the Pythagorean theorem**

tangent PT, QM = 12, M < P = 30°

**Math**

Can someone please help. How log will it take you to save $100,000 if you start saving 1597 every 3 months starting today? Assume and interest rate of 6% compounded quarterly. Business Calculator py/cy= 4 I=6% fv= 100,000 1597= PMT BGN is on

**Vocabs**

Thank you

**Vocabs**

6. Aunt Lorna (conferred, balked) when the waiter at the seafood restaurant told her that the dinner special- the "cach of the day"- was $41.00. conferred

**Vocabs**

1. The extra money being raised by the band booster club has been (earmarked, maneuvered) to fund future trips. maneuvered 2. The Labrador retriever received a medal from the fire department for its( valiant, compact) act of saving a drowning man. valiant 3. Whenever I go out ...

**Vocabs**

Is it 4 and 5?

**Vocabs**

1. The extra money being raised by the band booster club has been (earmarked, maneuvered) to fund future trips. maneuvered 2. The Labrador retriever received a medal from the fire department for its( valiant, compact) act of saving a drowning man. valiant 3. Whenever I go out ...

**Algebra**

A car rental agency advertised renting a car for $24.95 per day and $0.33 per mile.If David rents this car for 3 days, how many whole miles can he drive on a $100 budget?

**Physics- Start off good?**

Estimate the moment of inertia of a bicycle wheel 67 cm in diameter. The rim of the tire have a combination mass of 1.1kg. (1.1)(67) = 73.3

**Calculus,Reaction rates**

A man walks across a bridge at the rate of 5 ft/s as a boat passes directly beneath him at 10 ft/s. If the bridge is 10 ft above the boat, how fast are the man and the boat separating 1 second later?

**algebra**

if you deposit $13,000 per year at 5% interest compounded annually, what will your balance be at the end of the 12th year?

**science**

the relative age of a rock is

**calcu**

(4,-3) is on g For each of the following functions find a point on its graph. Enter exact answers. I cannot find the other three :( a) g(2x) - 5 ,(2,-8) b) 3g(x) + 1 c) -(g(1/3(x+4))-8) d) 1/2g(-5x-15)-8

**Chemistry**

GE's light bulb division ordered 100.kg of tungsten for the filaments. If the tungsten comes in a cube what is the volume of the cube? What is the length of each side?

**English**

C

**Chemistry**

1.630 g of iron ore is dissolved in an acidic solution. This solution is titrated to a pink endpoint with 27.15 mL of a 0.020 M KMnO4 solution. a. How many moles of MnO4- ions were consumed? b. How many moles of Fe2+ were in the iron ore sample? c. What is the percent of iron ...

**algebra**

43 Pictures are taken and ther is 32,680kilobytes of memory still available ,how many more pictures can they take ?

**arithmetic**

Amy is building a house .the basement floor is at -15feet. the roof of the house is above the ground 25 feet. express the comparison of heights as an equality . explain the meaning of the inequality

**Math**

Ray counted a total of 40 white cars and yellow cars. There are 9 times more white cars then yellow cars. How many white cars did Ray count.

**algebra**

can some explain this multiply the first equation by -10 -10x-10y=

**english**

So my answers were correct! It's d,c,d,b you WILL get 100!!

**prealgebra**

a.71 ft

**Canadian electrical code**

if the bare main contact conductors a a hoist are 21 meters long and do not have intermediate supports , the smallest copper wire that may be used for the conductors is

**math**

there are 4 boys at the park. some boys join them. now their 16 kids at park. how many boys joined them?

**math**

Jake and Sara each drive 270 miles to attend a conference. Jake drives at an average speed that is 15 mi/h slower than Sara’s average speed. It takes Jake 1.5 hours longer than Sara to drive the 270 miles. How long does it Jake to make the trip?

**Science**

henry can you explain to me how you got that answer i don't understand?

**Statistics**

Thank you!

**Statistics**

Recently, a university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,577. The population standard deviation is $2,566. What is the 95% confidence interval for the mean ...

**Statistics**

Thank you!!

**Statistics**

A survey of an urban university (population of 25,450) showed that 878 of 1,119 students sampled supported a fee increase to fund improvements to the student recreation center. Using the 95% level of confidence, what is the confidence interval for the proportion of students ...

**Statistics**

Thank you!

**Statistics**

Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The results showed that the average tread life was 52,515 miles with a standard deviation of 3,550 miles. What is the best estimate of the average tread life in miles for the ...

**math**

manuel and ruben played dominoes 24 times. Ruben has won 16 times. estimate the odds in favor of Manuel's winning the next match.

**physics**

Is there a way to calculate the moment of inertia of a hanging mass (3.1 kg) without length & width dimensions?

**man**

How to -2x+6y=-26 8x+6y=-1 6using elimination method

**math**

bill and jane are 1080 miles apart. They start driving towards each other at exactly the same time. Bill travels at 70 mph. Jane travels at 65 mph. How long must they drive before they meet?

**Algebra 2B**

1. A 2. D 3. B 4. B Correct answers. Put these in and you will receive full credit.

**poetry part 2**

I think it b It's not c

**Statistics**

The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins $600 and all others win nothing - that gamblers never reach "the long run." Even after many bets, ...

**Statistics**

The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins $600 and all others win nothing - that gamblers never reach "the long run." Even after many bets, ...

**Statistics**

A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 463 students was x = 118 minutes. Suppose that we know that the study time follows a Normal distribution with...

**physics**

A block with a mass of 1.0kg is lifted up slowly from ground (0m) to height of 0.51m. block is slowly displaced horizontally by .10m. find total work done to displace block vertically and horizontally. Then find total work to lift block and move it horizontally.

**Math**

A truck with 40-in.-diameter wheels is traveling at 50 mi/h. a) Find the angular speed of the wheels in rad/min b) How many revolutions per minute do the wheels make?

**Physics**

A trash can with a mass of 5 kg has a coefficient of static friction of μs = 0.80 and a coefficient of kinetic friction of μk = 0.22. (The Active Figure applies to a similar situation, but the values of the mass, coefficient of static friction and coefficient of ...

**Physics**

Suppose a hockey puck slides down a frictionless ramp with an acceleration of 4.70 m/s2. (a)What angle does the ramp make with respect to the horizontal? (b) If the ramp has a length of 6.40 m, how long does it take the puck to reach the bottom? (c) Now suppose the mass of the...

**Physics**

Suppose a hockey puck slides down a frictionless ramp with an acceleration of 4.70 m/s2. What angle does the ramp make with respect to the horizontal? Please show steps...

**US History**

ok is there any other questions i posted you can answer?

**US History**

i don't have my book and i have tried looking it up on the internet but it aint answering my questions

**US History**

i need help on the answers i was out sick the week we did this lesson and im clueless on it

**US History**

i really need help with this study guide 30.) Franklin D. Roosevelt became president during the Great Depression and established the New Deal in attempts to help the country recover. The New Deal was made up of several programs that are often times nicknames the alphabet soup ...

**English**

1.the trip led to an argument between Helen and ____ a.I b.me 2. It was ____ who demanded an apology from the newspaper. a.we b.us 3. We appreciated ____ writing a personal letter to explain his stand on the issue. a.his b.him 4. The most outspoken critics were my sister and ...

**social studies**

Where can I find a good, reliable source on the internet about the Bermuda Triangle? I would like a PDF with at least a few pages and I specifically am looking for scientific explanations. Sites that end with edu or gov would be great. I have been searching the internet for ...

**English**

Sorry my iPad did that by itself

**English**

Is it passive or active voice? Many clothes (we're given) to the homeless shelter. Passive By the end of today, the students (will have mastered) the grammar. Active My aunt Margot ( has been traveling) with her daughter. Active The cookies (have been eaten) by the guests...

**pyschology**

Thanks for your response, Ms.Sue. But I still Don't know how to relate that to clothing. Can you please explain a bit more?

**pyschology**

Define what prototype is and give four examples of prototype for the category of 'clothing' I know a prototype is a typical member of a particular category, but i Don't know what would be examples for prototype in terms of clothing... Would be it: tshirt, pants, ...

**Math**

Jay can deduct the amount over 7% of his gross income as medical expenses on his income tax return. If his annual salary is $18500 and his medical expenses one year were $1450 how much could he deduct on his tax return?

**Chem**

4.5 X 10^-12m

**English**

C.

**physics**

Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Object A has a mass of mA = 17.5 kg and an initial velocity of = 8.50 m/s, due east. Object B, however, has a mass of mB...

**URGENT ALGEBRA 2**

well yeah but ive had this question on a past test and i don't know the answer and i keep getting it wrong can you please help me answer it correctly?

**URGENT ALGEBRA 2**

identify the vertex and the axis of symmetry of the graph for the function y=3(x+2)^2 a.vertex(2,-3 axis of symmetry x=2 b.vertex(-2,-3) axis of symmetry x=-2 c.vertex(2,3) axis of symmetry x=2 d.vertex(-2,3) axis of symmetry x=-2 identify the maximum or minimum value and the ...

**algebra**

constraints x greater than or equal to 0 y less than or equal to 8 y greater than or equal to x y greater than or equal to -1/2x+6

**algebra**

what is the minimum value for z=3x-1/2y over the feasibility region defined by the constraints? a.-4 b.-5 c.-3 d.-6

**Math**

squareroot of 8 * exponents 3

**history**

compare the purpose, audience, and styles of John Winthrop and Johnathan Edwards.

**math**

what is f(-3) if f(x)=[2x+1]+5 0 10 12 -10

**math**

so (2+3)(4)=2*4+3*4=6+12=18 would be a possible answer to this question?

**math**

Write an algebraic expression that requires each of the following properties of real numbers to simplify, in the order given: the Distributive Property, the Associative Property of Addition, the Commutative Property of Addition, and the Distributive Property. Simplify the ...

**english 11**

yyay i got it right thanks so much

**english 11**

i got it its native american oral tradition

**english 11**

the statement below represents which genre from the early american and colonial period? i want to explain origins of the natural origins of the natural world and its processes.(1 point) a.the poetry of anne bradstreet b.the oral tradition of native americans c.the journals of ...

**us history**

when i write my thesis statement where do i put it in my paper? is it the first line of paper or what?

**social studies**

i have look and read over everything in my book number 3 i think i got it but the other 2 im clueless

**social studies**

1. Explain two ways in which sectionalism caused conflict or tension in the United States during the early 1800s. Then explain how sectionalism affects economics and politics in the United States today. 2. which was more of a priority in presindents lincolns reconstruction ...

**math**

1. write the equation in slope-intercept form. what are the slope and y-intercept? -9x+10y=-9 2. what is the graph of the equation? -5x+y=-3 please help on these a.s.a.p thansk guys

**Math**

Jdujs

**Calculus (help steve)**

i had trouble with this problem too

**Set and relations**

Help me understand: {5} is a subset {0,2,5} The way I read it is the only element in {5} is 5 and it is a member of the set {0,2,5}. I s this true?

**math**

looking for the pattern in these sequences: -2,-1,4,1,4,9,14,27,_,_,_,_

**math**

looking for the pattern in these sequences: -2,0,1,4,4,8,_ , _ , _, _, and so forth

**math**

A poll of 100 students was taken at a no-residential college to find out how they got to campus. The results were as follows: 28 said car pools;31 said buses;and 42 said they drove to school in their own car alone. In addition, 9 used both car pools and buses;10 said both car ...