Friday

April 18, 2014

April 18, 2014

Total # Posts: 2,655

**Pre Cal**

a piece of wire 5 inches long is to be cut into two pieces. One piece is x inches long and is to be bent into the shape of a square. the other piece is to be bent into the shape of a circle. Find an expression for the total area made up by the square and the circle as a functi...

**Pre Cal**

find the surface area of a box of hieght h whose base dimensions are p and q, and that satisfies either one of the following conditions: a) the box is closed. b) the box has an open top. c) the box has an open top and a square base.

**Pre Cal**

a function f is defined as f(x)= square root of (x+4). a) identify the domain of the function b) identify the range of the function c)Compute the intercept d) compute the x intercept E) sketch a graph of the function

**Pre Cal**

a 6 foot person is standing x feet away form a 10 foot lamppost. What is the distance d from the base of the lamppost to the end of the persons shadow, espressed as a function of x.

**english**

can you check to see if i identified the verbs correctly and used the correct tense. 1. For as long as I can remember, education has been a constant factor in my life. ( present progressive) 2. I received my first academic award in elementary school and it changed my whole li...

**business**

Discuss the pros and cons of the following statement: "Egalitarian companies are more innovative".

**Chemistry**

A line in the Lyman series of the hydrogen atom emission results from the transition of an electron from the n=3 level to the ground state level. a) What n level (#) is the ground state level for the hydrogen atom? b) What is the energy of this photon in Joules? c) What is the...

**Chemistry**

I don't understand this problem at all, I'm very confused, help would be greatly appreciated

**Chemistry**

c) What is the frequency (in Hz) and wavelength (in nm) of the emitted photon?

**Chemistry**

A line in the Lyman series of the hydrogen atom emission results from the transition of an electron from the n=3 level to the ground state level. a) What n level (#) is the ground state level for the hydrogen atom? b) What is the energy of this photon in Joules?

**Stats**

What z-score corresponds to a raw score of 68.7 when mean=60 and sd=4.3

**math**

(4y^3 − 5)^2 [4.6] Multiply.. Thanks :)

**chemistry**

How many grams of CuCl2 are required to make 75 mLof a 0.20M solution?

**chemistry**

What volume of 0.25M solution can be made from5.0 gof KCl?

**chemistry**

How many grams of KMnO4 should be used to prepare 2.00 L of a 0.500M solution?

**math**

Thank you

**math**

List the terms, coefficients, and degree of the following polynomial: 7x^4 – 3x^2 + 5x + 2/3 Can someone help me with this please. Thank You! :)

**biology**

Mitochondria vs Chloroplast The major difference between mitochondria and chloroplast is that the latter contains thylakoid membranes and pigment molecules, whereas the mitochondria membranes contain respiratory enzymes not found in chloroplast membranes. Chloroplasts essentia...

**Confidentiality of Health Information**

your medical records are private. but it depends on the 3rd parties requestiing the info for it to be made available to them. next time you visit the hospital save the medical records privacy act. almost any medical facility you go now will provide the info to you. someone jus...

**Algebra**

Construct a truth table for (p ^ ~q) <-->q ^ is meant to be a conjunction symbol

**Algebra**

Construct a truth table for ~q v ~p. I am really lost here.

**Algebra**

Translate the following statement into English (~r v q)-> ~p The v in the center is for "disjunction" and "or" and that is an arrow meaning "if-then" after the parentheses. p=Jamie is on the train q=Sylvia is at the park r=Nigel is in the car

**Math**

Can someone help me with this one problem Please! :) Add: (-1/3x^2-1/4x+3/4)+(1/2x^2-1/4x-1/2)

**math**

List the coefficients of the given polynomial: -x3 – 4x2 + 3x – 6 My answer was going to be: -1, -4, 3, -6

**Math**

I completely agree with you. I am a visual learner and this book is so hard for me to understand it isn't even funny. I am so stressed out and i thank you for your help really.

**Math**

Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 24x^3y^-3/72x^-5y^-1 My answer was going to be: 24/72*x^3/x^-5=y^=3/y^-1

**Math**

Thanks for your help. I wasn't even using the ^2 outside the parenthesis. Thank YOu! Ashley

**Math**

Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents (-33xy^-1/66x^0y^-3)^2 This is the answer i am getting from TRYING to follow my online book. Please Help Me. Thank You! -33/66*x^-3/y^-1y...

**Math**

Simplify the following expression squareroot -14 squareroot -56 (My answer is going to be 7)

**Math ( Algebra)**

Short Answer: Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents (-33xy^-1/66x^0y^-3)^2

**Math**

A sales representative must visit five cities. There are direct air connections between each of the cities. Use the multiplication rule of counting to determine the number of different choices the sales representative has for the order in which to visit the cities. ____choices

**Algebra 1 **

I have a problem that says: Combine these two statements into a single mathematical statement: x>2 and x<7. I'm not sure if I'm supposed to do this by graphing a number line or not, is there a way to do it without a number line?

**chemistry**

How many grams of Na2CO3 are required to completely react with 35.6mL of a 0.315M HCl solution? Na2O3(s) + 2HCl(aq) --> 2NaCl(aq( + CO2(g) + H2O(I)

**chemistry**

How many grams of Na2CO3 are required to completely react with 35.6mL of a 0.315M HCl solution? Na2O3(s) + 2HCl(aq) --> 2NaCl(aq( + CO2(g) + H2O(I)

**HS Science **

I have 4 questions 1 What is the equation for the acid ionization constant of HI? 2 Give the oxidation numbers of all atoms in NaMnO4 3 An atom changes its oxidation number from -2 to -5. Is it oxidized or reduced? How many electrons did it take to do this? 4 An atom changes i...

**biochemistry**

Why do you think the proximal and distal histidines are invariant between myoglobin, the alpha subunit and the beta subunit?

**statistics**

Thank you sooo much!! Also thanks for posting steps and not just an answer.

**statistics**

The proportion of baby boys born in the United States has historically been 0.512. You choose an SRS of 55 newborn babies and find that 47% are boys. Do ALL calculations to 5 decimal places before rounding. (d) In a random sample of 55 newborn babies, what is the probability t...

**calculus**

I see that someone else on here had the same problem, I wanted to find the solutions for 5xe^x+1 but its not really an equation.

**calculus**

If |2x - 1 | > 3 , then which of the following could not be a value of x?

**Physics**

A 36 kg box hangs from a rope. What is the tension in the rope if the following are true? (a) The box moves up a steady 5.0 m/s? (b) The box has vy = 5.0 m/s and is slowing down up at 5.0 m/s2?

**Chemistry**

Calculate the amount of energy required for the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 A, and the radius of the selenide ion is 1.98 A. Note that 1 A=10^-10m.

**Chemistry**

Calculate the amount of energy required for the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 A, and the radius of the selenide ion is 1.98 A. Note that 1 A=10^-10m.

**Math**

A ball is thrown with an initial velocity of 10 m/s from a height of 2 meters. At what time does the ball hit the ground?

**physics **

A car goes at a constant velocity of 15 m/sec for 4 seconds. How far does the car go in that time?

**Claflin**

A reflecting, spherical Christmas tree ornament has a diameter of 8.0 cm. A child looks at the ornament from a distance of 20 cm. Describe the image she sees. image location in centimeters.

**physics**

This refers to the shuttle orbir question: my response to answers posted: So would I take the answer from the formula for a circumference of a circle(24900.26337) and divide it by 17,265 to get 1.442239408(~1.44h)? How I got the circumference: 2 x pi x 3963=24900.26337

**physics**

I also tried 180mi/51.3(t)=3.50877193h. Then i took 80mi/that answer to get 22.8mph. Is that the right approach?

**physics**

Would the time southbound be if I were to half 5.46? Or, I looked it up that it would take about 1 h 30 min from austin to san antonio. I ended up taking 80mi/1.5h=53mph. If thats not a good way to go about it, how do I figure out the time southbound?

**physics**

A student wanted to drive from Austin to san Antonio ,80 mi south of Austin on highway I35. Unfortunately he entered in the wrong direction and drove to waco-100 miles north of Austin –before he noticed his error. In waco ,he turned around,drove back to Austin and continu...

**physics**

I took 1.91m x 100cm and got 191cm and then divided it by .000000047s and got 4,063,829,787 cm/s. Is that just about correct?

**physics**

An electron travels 1.91 m in 4.72x10^-8s. How fast does it travel? Answer in cm/s

**physics**

I tried 1.44 h, but I got the answer wrong. Can you please tell me what I may be doing incorrectly with the significant figures? thanks

**physics**

So would I take the answer from the formula for a circumference of a circle(24900.26337) and divide it by 17,265 to get 1.442239408(~1.44h)? How I got the circumference: 2 x pi x 3963=24900.26337

**physics**

The average speed of an orbiting space shuttle is 20100 mi/h. The shuttle is orbiting about 196 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the Earth? Answer in units of h ( hours)

**physics**

Thanks! I have one more question: how did you get the .717m for the man?

**physics**

A man jogs at a spee of 1.1 m/s. His dog waits 1.6s and then takes off running at a speed of 3.8 m/s to catch up with the man. How far will they each have traveled when the dog catches up with the man?Answer in units of m

**physics**

Two ants race across a table 70 cm long. One travels at 5.7 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line,how far behind is the second one? Answer in units of cm

**physics**

I multiplied 68.1 X 5.099043638x10^14=3.472448717x10^16 to get the ocean area. Then to get the average depth i took 1.21mix1609m=1946.89. Then i multiplied the ocean area and volume i got to equal 6.760475683x10^19. To get the mass, I took that answer and multiplied it to 1000...

**physics**

Assuming that 68.1% of the Earth's surface is covered with water at average depth of 1.21 mi. ,estimate the mass of the water on Earth. One mile is 1.609 km and the radius of the earth is 6.37 x 10^6 m. Answer in units of kg

**Chemistry**

How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution? Mg + 2HF MgF2 + H2

**Elementary Statistics**

42/(39+42)= 51.85%

**Advanced Calculus 2**

Construct an example of two Riemann integrable functions whose composition is not Riemann integrable.

**Science**

Sorry! I meant what different types if energy!

**Science**

What are the different types of motion? I always get those mixed up and my older sister says that we will be studying that next year. Thanks for the help!

**Health**

thank u for answering, but can u please answer my two questions that I had asked?

**Health**

wht about crack cocaine and u never said that cocaine could be injected on the other post

**Health**

I did, so none of them can be injected or wht?

**Health**

Is Cocaine swallowed, smoked, snorted, or injected? Is Crack Cocaine swallowed, smoked, or injected?

**Health**

ik i did but idk

**Health**

which one is a picture of a person smoking Cocaine not Crack Cocaine

**Health**

Ms. Sue I need help finding a Picture of someone smoking Cocaine can u find a picture for me please?

**Health**

ok, so is cocaine swallowed, smoked, snorted, injected or what? AND THEN IS Crack Cocaine swallowed, smoked, snorted, injected or wht?

**Health**

I can't find the answer to my two questions.. What are the answers, Ms. Sue?

**Health**

Is Cocaine swallowed, smoked, snorted, injected? Is Crack Cocaine swallowed, smoked, snorted, injected?

**math**

A cat owner wants to put equal amounts of food into dishes. If she has 3as a hole number. 2 over 3 as a fraction unces of cat food how many ounces will each food dish get

**american history**

encomienda

**Math**

Find m<2 m<2 is 9x - 32

**Juwayria Highscholl**

An obsever is looking out to sea from the top of a building that is 30 m above sea leavel. He observera ship at an angle of depression of 10. How far is the ship from the foot of the bulding?

**Accounting 100**

Who can be harmed when a company changes its accounting methods too often?

**Pre algebra **

At the wintergrove amusement park you can purchase a season discount pass for 75$ that will allow a 10$ admission to the park all season. If you do not purchase a season discount pass, then the park admission is 35$. Determine the number of times you must visit the park with a...

**Pre algebra**

The width of a triangle is x-3 and the length is 2x-1. Write and solve an equation to find the perimeter and area of the rectangle if the measures of its length and width are in a 1:3 proportion

**Pre algebra**

Simplify 10w+6+3w

**Pre algebra**

Simplify (3c•7)•2

**Pre algebra**

simplify (0+9k)+k

**Pre algebra**

6k+10-4k-2k

**Pre-algebra**

9n+5-9-9n

**Pre-algebra**

Simplify the expression (8•5)•1

**Pre-algebra**

Simplify the expression 12q•0•q

**Geometry - plz help**

h=x b1=21cm b2=20cm area=225.5cm2 h=2(225.2)/(21cm+20cm)

**Pre algebra**

Kayla has a 41% grade average. On an exam that is worth 20% of her grade she gets a 100%. What is her grade now?

**Math**

Kayla has a 41% grade average. Then sha takes an exam that is for 20% of her grade and gets an 100%. What is her grade now?

**US history**

What actions did William Carney take that he became the first black recipient of the congressional medal of honor?

**Grammar**

Hailey hurt her leg... Bad or badly

**Grammar**

What is the difference between accept and except?

**U.S. History**

During the civil war, name three reasons each why the north's money value went down and why the south's money went even more down than the north

**Science**

The part of a cell that protects it from its environment is the...?

**U.S. History**

This isnt homework but I found out that I am related to kit Carson (great great great great great great uncle) I wanted to know more about him. Any information? Thanks a lot!

**8th grade science**

What is the reprodution in bacteria, prokaryotic cells, called? A. Mitosis, B. Binary fission, C. Interphase, or D. Fusion. Thank you for helping! I need this because it's for my 9 weeks exam study guide which counts for a whole lot of my grade. Thanks!

**Math(scientific notation)**

1)9.32E-7 + 1.32E+4 = 2)1.32E+4 + 1.04E+5/6.47E+4= 3) 9.93E+6/(9.32E-7)(1.32E+4)= I keep getting a different answer from the answer my teacher provided.

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