# Posts by Alexis

Total # Posts: 990

pre calculus
1.)A utility company has the following rate schedule for natural gas usage in a city’s business district: Monthly service charge: \$8.80 Per therm service charge 1st 25 therms : \$0.6686/therm Over 25 therms: \$0.85870/therm (a) What is the charge for using 25 therms in one ...

fgcu
More than a decade ago, high levels of lead in the blood put 88% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 12% of children in the United States are at risk of high blood-lead levels. (a) In a random sample of 194 ...

physics
A water tower is 100m tall and has a diameter of 0.77 cm^3, what is the velocity of the water?

MATH
BRYCE HAS 24 BASEBALL TROPHES. MATT HAS 3/4 AS MANY TROPHIES AS BRYCE. HOW MANY TROPHIES DOES MATT HAVE?

MATH
ESTIMATION. WHICH IS THE BEST ESTIMATE FOR THE AREA OF A SQUARE WITH SIDES EQUAL TO 4 1/8 INCHES?

MATH
WHICH BENCHMARK FRACTION COULD YOU USE TO ESTIMATE THE PRODUCE OF 36 X 11/16?

MATH
JENNA LIVES 4 3/10 MILES FROM SCHOOL. SHE ESTIMATES THAT SHE TRAVELS 4 X 2 X 5, OR 40 MILES EACH WEEK. IS HER ESTIMATE AN OVERESTIMATE OR AN UNDERESTIMATE? EXPLAIN.

MATH
SHOW THREE WAYS TO ESTIMATE 3/5 X 9 1/2. IDENTIFY EACH METHOD YOU USE.

The answer is simple but you have to find it out your self

AP Physics B

AP Physics B
An object is 21 cm in front of a diverging lens that has a focal length of -10 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.5?

Chemistry

Science
What did Oprah Winfrey do for 152 exceptional girls in South Africa? C How does Winfrey describe her relationship with the girls who attend the school? A How did Winfrey show that the opening ceremony was an important celebration? I don't really know, so, pick D.

General Chemistry
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3(s)+2HCl(aq)--> CaCl2(aq)+H2O (l)+CO2(g) How many grams of calcium chloride will be produced when 32.0 g of calcium carbonate are combined with 11.0 g of ...

chemistry
An object has a KE= 18000 and a massof 98kg what is the speed of the object

science
If I put a note card with words on it behind a jar of water why does part of the note card little different from the rest of the note card?

Math Word problem !
I have one more question ... How did you get 1,200 ?

Math Word problem !
Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 2% commission for sales up to \$4000 and a 4% commission for all sales in a month above \$4000. Last month her sales were \$5200. How much was her commission?

Math
Sustem of equations. I have to solve the system of equations by graphing and solving. Ther are thirty-three students in the Chess Club. There are five more boys than girls in the club. Write and solve a system of equations to find the number of boys and girls in the chess club.

Physics
A 1200kg car accelreates from 0mph-60mph in 8.5 seconds. Calculate the force needed to accelerate the vehicle.

english
What is a example of a understatement in the cask of amontillado.? Is one "my heart grew sick, it was the dampness of the catacombs that made it so" a understantment in this story? PLEASEE HELP ASAP!!

accounting
The accounting records of NuTronics, Inc., include the following information for the year ended December 31, 2011. Dec. 31 Jan. 1 Inventory of materials \$ 24,000 \$ 20,000 Inventory of work in process 8,000 12,000 Inventory of finished goods 90,000 80,000 Direct materials used ...

accounting
The Bags and Luggage Company had the following account balances as of January 1: Direct Materials Inventory \$ 8,700 Work in Process Inventory 76,500 Finished Goods Inventory 53,000 Manufacturing Overhead - 0 - During the month of January, all of the following occurred: 1. ...

Math
for me in Colorado connections its 1. D (x^4) 2. A (5(5^3/2/5)^2) 3. B (6^3x^5) 4. B (4.5x10^9) 5. B (to subtract powers w same base divide exponents)

chemistry
What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

intergrated topics/math
thanks

intergrated topics/math
so i would times and then divide and that would be my answer

intergrated topics/math
evaluate the following expression of a=3, b=10, and c=6

Math
Reducing fractions how can I figure out the reduced fraction for 20/10?

Biology
List two ways that these single - celled fungi are different from bac-terial cells?

Chemistry
A mixture of gases contains 2.00 mol of O2, 3.00 mol of N2, and 5.00 mol of He. The total pressure of the mixture is 850 torr. What is the partial pressure of each gas?

English
I need to make a thesis that uses stranger in a strange land and its backed up by the Handmaids tale. Like I could talk about how religion causes oppression in stranger in a strange land and the handmaids tale. Right now im trying to use this thesis:Robert A. Heinlein and ...

algebra
the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE HELP ME

AP Physics B
Thank You So Much!

AP Physics B
A 63.6-kg bungee jumper is standing on a tall platform (h0 = 50.6 m). The bungee cord has an unstrained length of L0 = 9.54 m and, when stretched, behaves like an ideal spring with a spring constant of k = 67.8 N/m. The jumper falls from rest, and it is assumed that the only ...

psycholoogy
Behavioral geneticists and evolutionary psychologists emphasize

Science 7 HELP!!!!
I have the same problem

Maths
Find the derivatives of these: f(x)=(√(x))sinPix Also: f(x)=√(Cosx+sinx) Steps would be greatly helpful as I will be able to use them as reference. Thank you.

Maths
Find the derivatives of these: f(x)=√

physics
A 75.0 kg stunt man jumps from a balcony and falls 28.0 m before colliding with a pile of mattresses. If the mattresses are compressed 0.800 m before he is brought to rest, what is the average force exerted by the mattresses on the stuntman?

Idk Could u help me 2 figure out

Social Studies 8R - Paragraph Check
please check my my essay okayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy please let me know if there are any wrong let me know

Physics
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

physics URGENT! HELP
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

physics
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

AP Physics
A 1200 kg car is moving at 33 m/s then has the brakes applied at a deceleration of 6.1 m/s. How far will it move before stopping?

Chemistry
Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?

Chemis
Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?

English singluar and plural possessive nouns
What are some rhyming plural possessive words?

write the sum.Show the ten-ten-fact you used. 9+7=16 /\ 1 6 10+__=? is it 10+6=16

General Chem
Nitrogen oxide reacts with oxygen gas to form nitrogen dioxide (NO2). In one experiment 0.866 mole of NO is mixed with 0.503 mole of O2. Calculate the number of moles of NO2 produced

Math
What is 71 times 65 in ladder form

Chem 105
If 13.4 kilograms of Al2O3(s), 54.4 kilograms of NaOH(l), and 54.4 kilograms of HF(g) react completely, how many kilograms of cryolite will be produced?

chemistry
what is the height of the ethyl alcohol that exactly fills a 200.0mL container? the density of ethyl alcohol is 0.789/mL

Science
A hydraulic lift office chair has its seat attached to a piston with an area of 11.2 cm2 . The chair is raised by exerting force on another piston, with an area of 4.12 cm2 . If a person sitting on the chair exerts a downward force of 219 N, what force needs to be exerted on ...

Math
Sophia has \$1.00 in coins. 1/5 is dimes. 2/15 are nickels. 2/3 are pennies. How many of each coin does she have?

sta luces
graph -20x-45y=48

Math
All the numbers from 1 to 99 are multiplied together. What is the last digit of the product?

chemistry
jason needs to use 63.5 grams of alcohol that has a denisty of .818 g/ml. How many millilters of the alcohol would jason need?. show work please

physics
An airplane with a speed of 88.0 m/s is climbing upward at an angle of 72.1 ° with respect to the horizontal. When the plane's altitude is 779 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...

Math
Thank you (:

Math
Can you place least to greates ; these numbers 5/6, 0.85, 0.9

Science
stomata is what makes gases it is found on a tree and leaf

physics
356 barrels

algebra
what is 1=2n

math
Find all the possible rational roots of f(x)= 4x^4 - 3x^3 +2x^2 + x -3 f(x) = -3x^3 - 2x^2 + x -1 Thank you so much:)

Math, Pre Calc
Thanks!

algebra
2x^3+7x^2-18x-63

math
54x^5-16x^2

math
2x^3+7x^3-18x-63

Chemistry
Write the net ionic equation for the reaction between sodium chloride and cobalt (ll) nitrate. so far i have... 2NaCl(aq)+ Co(NO3)2(aq)---> NaNO3(aq)+CoCl2(s)

math
65/6.5 equal

health
yes u r right

Math
Christine runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 85 minutes?

Due to his ______ habits, he had a ______ for berating his friends in an effort to bolster his own reputation.

geometry
Find the surface area of a rectangular prism with a height of 11, a length of 15, and a width of 10.

Geometry
The radius of a circle is 7 feet. What is the area of a sector bounded by a 180° arc?

pre algebra
3 1/4 - (3 - 1 5/6) =

MATH
rowan raised \$640 in a charity walk last year. This year he raised 15% more than he raised last year. How much money did rowan raise this year? SHOW YOUR WORK.PLEASE HELP ME

World History
Where did freedom come from?

Chemistry
Aluminum sulfate and calcium acetate = ?

Chemistry
how do you show the synthesis of copper (1) chloride?

English
What are some examples of irony that compares and contrasts The Story of an Hour and The Whirligig of life?

writing
i got c am i right plz help me what to u think

How can a financial manager at a non-profit make better use of Web capabilities to enhance the financial position of the organization?

Do you see the job of the non-profit financial manager as getting easier or more difficult in the future?

math
If a rectangular has 54 feet im volume and 6 feet im im length and 3 feet in width what is the height

english
how to start an opening paragrph for explaning what love and infatuation means

or do you guys now of a good website that can help me?

what do probation officers do during trial and pretrial processes?

Math
You play a game where you win \$1.00 for each dot that turns up on a fair die (has 6 sides). You pay \$3.50 to play the game (and the money is not returned). Find the expected (average) winnings for this game.

Math
You play a game where you win \$1.00 for each dot that turns up on a fair die (has 6 sides). You pay \$3.50 to play the game (and the money is not returned). Find the expected (average) winnings for this game.

calculus
yeah u need to review them omg i had a crush on this guy named bryan and he spelled it the same way as you! weird right?

Math
sorry i don't know this crap is outta my head

Biology
Ummmmmmmmmmmmm MAY-be u should ask Watson and cricks model and not some website i have the best advice and u should probably listen now go online and LISTEN TO SOME MINDLESS BEHAVIOR CUSZ THEY R AMAZING!!!!!!!!!!!!!!!!!!

social study
What are some major turning point in vietnamese history leading up to world war 2

The experimental part is that, say we add 4 ml of water, 2 drops of saturated iodine in KI solution.. etc. to the reaction in the introductory paragraph. We are suppose to predict the colour changes in the two phases when each is added to the initial reaction.

I'm stuck on how to do these 4 problems concerning Chemical Equilibriums. When varsol and iodine/pottasium iodide solutions are mixed, the two phases form.. phase A (top) would be pink and phase B (bottom) would be brown. What are the colours in each phases for these 4 ...

physics
A) PE of gravity= m*g*h m=mass of object g=acceleration due to gravity h= distance mass= weight/gravity=4.383 PE=(4.383kg)(9.81 m/s^2)(1.7m) PE=73.095 J

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