Friday

April 18, 2014

April 18, 2014

Total # Posts: 103

**math**

When you round 94,872 to the nearest ten thousand = 90,000, then round to the nearest thousand = 95,000. What do you notice about your answers ? Explain

**history**

The Americas didn't provide Europeans with added

**sceince**

Which of these does the welding tool release ? 1) heat and electrical energy 2) heat and light . I think it's heat and light is this correct .

**Physics**

Which produces the largest torque? 30.0 N perpendicular to the center of rotation at a radius of 1.5 m 30.0 N perpendicular to the center of rotation at a radius of 0.25 m 60.0 N perpendicular to the center of rotation at a radius of 1.0 m 60.0 N perpendicular to the center of...

**language **

Is it , The leaves were shaken from the branches .

**language**

Is this the correct past-tense helping verb and main verb for the rewrite of this sentence ? The leaves were shook from the branches . The leaves was shaken from the branches .

**language**

Is this punctuation correct for this sentence ? " Here's a hard one , " taunted Wilma .

**math**

I need to write and explain how I know that 55/80 is not in the simplest form.

**Algebra**

How do you write an algebraic expression for five friends went to a baseball game. Three of the friends each bought a ticket for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money...

**math**

How many tens are there in 7,801,204.76? Is it 7 ?

**math**

what value does the 6 represent in 7,801,204.76 ? Is it hundredth ?

**Social Studies**

How would land elevation have changed if Coronado had traveled 150 miles due west from what is today Arizona instead of east toward New Mexico ?

**Chemistry**

how many joules and calories are produced from the reaction CaCl2+H2O=HCl+CaOH

**english**

finding subject There were many new inventions in the 1920s.

**math**

it says to find a fraction of these whole numbers 1/2 of 10 has to be a fraction

**math**

Find the fraction of these whole numbers 1/2of 10

**science**

in pea plants yellow peas are dominant over green peas. a particular pea plant has one recessive allele for green peas. in which of the following scenarios would the plant have green peas?

**biology**

genetic engineering can provide a variety of advantages and disadvantages to today's society. what are current scientists more likely to learn from transgenic animals than from transgenic bacteria or transgenic plants?

**reading**

COULD IT BE THAT HE'S WANTS TO MAKE THE STORY MORE INTERESTING TO HOLD CHITA INTEREST?

**reading**

Papa Tells Chita a Story Papa said, "I kept riding,riding,riding...and the sun got hotter,hotter,hotter."Why do you think Papa repeated the words in that sentence?

**physics **

Suppose a car is traveling at +23.8 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2. What is the stopping distance of the car, as measured from the point where...

**algebra**

I am a multiple of 2 but not 3. I am the largest two digit number that fits the first clue.what am i?

**math**

Saving increase. The amount in a saving account increased from $400 to $425. What was the percent increase?

**math**

garys cat weighs 11 lb.How many ounces is that?

**math**

What is the first step in solving the equation x/5 - 9=6?

**math**

The numbers 1, 7, 21, 35, 35, 21, 7, 1 form a row of pascal's Triangle. Which power of (a+b) does the row go with? Write the next row?

**Chemistry!**

Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10−2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the ...

**Chemistry 1201**

6.5 grams sorry.

**Physics**

The boiling point of helium at 1 atm is 4.2 K. What is the volume occupied by helium gas due to evaporation of 70 g of liquid helium at 1 atm pressure and a temperature of 6.2 K?

**physics**

A 3.47 kg ball is attached to a ceiling by a 1.63 m long string. The height of the room is 5.59 m. What is the gravitational potential energy of the ball relative to the ceiling?

**Math**

Ms. Perez has a crate has 24 pieces of fruit . 1/2 are oranges, 1/4 are mango's and 2/8 are pineapples. How many oranges are there, how many mango's and how many pineapples?

**calculus**

Find the integral of x^3 + [(x^4)(tanx)] from -pi/4 to pi/4

**calculus**

Find the integral of x^3 + [(x^4)(tanx)] from -pi/4 to pi/4

**calculus**

Find the integral of x^3 + [(x^4)(tanx)] from -pi/4 to pi/4

**programming**

Problem 6.9 Lottery Number Generator A lottery commission offers four different lottery games to play: Three-number, Four-number, Five-number and Five-number + 1 lotteries. Each game has independent numbers. Develop an application that randomly picks numbers for all four games...

**Accounting**

If you treat the day of the month as a number (March 12th is the number 12, April 4th is the number 4), what is the average value of the numbers that represent the 6 Tuesdays that fall after September 12, 2011?

**English**

"I am both a quick worker and careful." do i need to change this sentence to make it parallel?

**Genetics**

Thank you!

**Genetics**

How is it that someone with brown eyes could have parents, both with blue eyes? Aren't blue eyes recessive?

**english**

Pretend that you writing to the editor of your local newspaper. Your purpose is to convince its readers that rather than solely relying on e-mail, people should mail a letter to their loved ones every now and then. Following is your first draft. Every now and then, instead of ...

**english**

Pretend that you writing to the editor of your local newspaper. Your purpose is to convince its readers that rather than solely relying on e-mail, people should mail a letter to their loved ones every now and then. Following is your first draft. Every now and then, instead of ...

**Operations Management **

Setup Times Read the case study below “Hi-Ho Yo-Yo, Inc.”. Write a short summary of each of the four methods for selecting the order in which to release the products to printing. Complete a short analysis for each method which provides the average flow time and avera...

**calculus**

find the tangent to y=27/(x^2+2) at (1,9)

**algebra**

What is the answer to (6.9); x + 6y = 5

**Chemistry **

Select everything on the list below that is composed of atoms. a. water b. can of soda pop c. computer you are using d. your textbook e. an orange f. bottle of drain cleaner g. flask of hydrochloric acid would the answer be all of the above?

**Math**

8*-6 cube- -100/-20

**physics**

A block of mass 3.90 kg is pushed 3.80 m along a frictionless horizontal table by a constant 16.0 N force directed 24.0° below the horizontal. What is th total work done on the block?

**physics**

An airplane has a mass of 33500 kg and takes off under the influence of a constant net force of 41500 N. What is the net force that acts on the plane's 82 kg pilot?

**physics**

An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 3.3 m/s2. The magnitude of the car's velocity at the end of stage...

**11th grade**

An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 3.3 m/s2. The magnitude of the car's velocity at the end of stage...

**physic you sure**

in the distance you see an arch 192 meters high, you estimate your line of sight with the top of the arch to be 8.4 degree. appox how far in kilometers are you from the base of the arch? tan8.4-0.192/d? is this the complete answer?

**physics**

in the distance you see an arch 192 meters high, you estimate your line of sight with the top of the arch to be 8.4 degree. appox how far in kilometers are you from the base of the arch?

**11th grade**

in the distance you see an arch 192m. you estimate your line of sight with the top of the arch to be 8.4 degrees above the horizontal. appox how far in kilometers are you from the base of the arch?

**consumer math**

Jan borrowed $1,200 at 11.5% interest for three months. How much does she have to repay under a single-payment plan?

**Vector**

Determine the caresian equaiton of a plane that pass through point P(1,2,2) and is perpendicular to the line (x,y,z)= 3,-1,-4 + t(-2,3,1)

**calculus**

What is the definite integral from 0 to x of 1/(4 + t + 3t^2) dt? For starters, what is the anti-derivative and how did you find it? I think I could take it from there.

**Physics**

Ok. I finally got a new answer of 0.12 meters, which the computer liked better.

**Physics**

In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.3 kg sphere. Students determine the frequencies of standing waves on the horizontal segment of the string, then they raise a...

**calculus**

A trough is 15 ft long and its ends have the shape of isosceles triangles that are 4 ft across at the top and have a height of 1 ft. If the trough is being filled with water at a rate of 14 ft^3/min, how fast is the water level rising when the water is 8 inches deep? Does 1.4 ...

**calculus**

A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast is the boat approaching the dock when it is 9 m from the dock? I a...

**geo**

Beijing (wikipedia / Beijing)

**Calculus**

Let f and g be the functions in the table below. x f(x) g(x) f '(x) g'(x) 1 3 2 4 6 2 1 3 5 7 3 2 1 7 9 (a) If F(x) = f(f(x)), find F '(2). (b) If G(x) = g(g(x)), find G '(1). I know I probably have to use the chain rule. But how?

**calculus**

Differentiate the following function. f (x) = 6 x 2 sin(x)tan(x) Where do I begin?

**calculus**

Aha! Thank you.

**calculus**

Find a parabola of the form given below that has slope m1 at x1, slope m2 at x2, and passes through the point P. y=ax^2 + bx + c m1 = 8, x1 = 11 m2 = 7, x2 = 9 P = (5,7) y = ? I don't know where to begin. I can't find anywhere in my textbook that teaches how to solve t...

**math **

Sal borrowed $2,000 for six months at 11.5% simple interest. What was the total amount he had to repay?

**math**

13 > children >= 2 seniors >= 65 discounted tickets are in the range "[2,13) U [65,INFINITY]" in terms of "years old" So on a number line, you would put a dot at 2, a circle at 13, and connect the two with a line. You would also put a dot at 65 and...

**physics**

I was finally able to figure it out. Thank you, though.

**physics**

A bicycle wheel is mounted on a fixed, frictionless axle. A massless string is wound around the wheel's rim, and a constant horizontal force, F, starts pulling the string from the top of the wheel starting at time t = 0 when the wheel is not rotating. Suppose that at some ...

**physics**

A string is wrapped around a uniform solid cylinder of radius r. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass m. Note that the positive y direction is downward and counterclockwise torq...

**calculus**

Use the Intermediate Value Theorem to show that there is a root in the equation x^(1/3)=1-x in the interval (0,1).

**calculus**

I see that now. Thank you.

**calculus**

lim (x->0.5 from the left)((2x-1)/|(2x^3-x^2)| = -4 I would have thought positive four. How can this be?

**physics**

A barometer is taken from the base to the top of a 554 m tower. Assuming the density of air is 1.29 kg/m3, what is the measured change in pressure?

**ath**

Jill deposited $2,500 in a savings account at a rate of 7.75%, compounded monthly. How much was in her account after three months?

**consumer math**

One week Roger earned $425.50 regular pay and $60.50 overtime pay. His net pay for the week was $275.30. How much did he have withheld for deductions? i dont know how to find the deduction so far dont now if right i add regulare pay= $425.20+$60.50=$485.70 but than do i subtr...

**Math**

thank you i got it right

**Science**

Megan, Jose, Austin, and Timothy are driving from Atlanta to Orlando which is a total of four hundred miles. They each left at 6:45 a.m. Everyone has been driving at different average speeds. Figure out the average speed of each driver. 1. Jose's friend is driving from Or...

**algebra**

How do you simplify 7-6 x 2ã 3+9

**math geometry**

in what type of trapezoid are the base angles congruent?

**math geomety**

draw a trapezoid whose parallel sides measure 1 inch and 1 1/2 inches. find the length of the midsegment

**math**

Given the simple interest formula, I = Prt, solve for t

**math prob**

how many midsegments does a triangle have?

**ml algebra 1**

Simplify the expression: 40x ÷ (1/8)

**math**

1/3

**5th grade**

why are all prime numbers, besides 2 odd?

**Chemistry**

Hello! I was wondering why is it that it is safe to eat olive oil, corn oil, canola oil, etc. but not diesel oil or something like that. What is the reason in chemical structural sense?

**Algebra 8**

What property is shown in the equation below? -43 ÷ (-1) = 43

**american government**

why in many states voting districts before 1964 werre unequal in population

**Math**

i need to know exactly the formula of how to do these types of problems because i have spend seriously over an hour trying to do this one problem. HELP! A dealer mixes candy worth 90 cents per pound with candy worth 65 cents per pound in order to obtain 40 pounds of candy to b...

**Algebra**

find all ssymptotes of indicated type. I am really confused on this one. f(x)=(x-9)/(x^2-4), vertical x^2-4=0 x=+-2 x=2&x=-2 x arrow oo or x arrow -oo (-9/x)&(-4/x) approach 0 h(x)=(1/x)+0)/(1+0)=(0/1)=0

**coefficient**

test using the lead coefficient to find out if y arrow oo, or y arrow-oo as x arrow -oo y=-5x^3+4x^2+6x-7 n is odd -5x^3 an<0 -5x^3 y arrow -oo as x arrow oo Is this right or do I need to go back and try again??????

**Chemistry**

Consider a certain type of nucleus that has a half life of 32 min. Calculate the percent of original sample of nucleus remaining after 3.0 hours have passed? how would i calculate this???

**CHEM**

thanks alot for all of your help!

**CHEM**

the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking the atom through many transformations to end up as an atom of 208 Pb 82. How many alpha particles are emitted in converting 232 Th 90 into 208 Pb 82?...

**Nuclear chem**

electron decay transforms 40 K 19 into what nuclide?

**Nuclear Chem**

the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking the atom through many transformations to end up as an atom of 208 Pb 82. How many alpha particles are emitted in converting 232 Th 90 into 208 Pb 82?...

**Chemistry**

what is the equation for activation energy in terms of chemical kinetics. i tried to look it up but i get something different every time

**Kinetics**

I'm really struggling to understand this chapter in chem class, partly due to an inadequate math background. does anyone have any tips for learning kinetics? i'm starting to fall behind.

**CHEMISTRY PLEASE HELP**

For the reaction A + 2B + C ----> 2 D + E the following initial concentration and initial reaction rates are found: [A]null (M) [B]null (M) [C]null (M) 0.150 0.150 0.150 0.275 0.150 0.150 0.275 0.564 0.150 0.150 0.314 0.253 0.193 0.314 0.217 initial rate wrt E (Ms^-1) 0.210...