# Posts by kate

Total # Posts: 2,023

**algebra**

Let x = the salary of the husband. So Lien earned x+1700. Lien's salary + her husband's = 42100 x + 1700 + x = 42100 2x + 1700 = 42100 2x = 40400 x = 20200 Lien's husband earned $20200, and Lien earned 1700 + 20200 = $23900.

**Math**

What are the directions? It's not clear what to do.

**calculus**

Set the denominator equal to zero and solve for x. 3x-14 = 0 3x=14 x=14/3 This is the x-coordinate of the vertical asymptote.

**math 5th grade**

First I would choose a number divisible by 9 to use as an example. I chose 81. If 8/9 of the customers ordered coffee, that's 8/9*81 = 72 customers. If reg coffee was ordered three times as much as flavored, then you want to set it up like this: 3x + x = 72 4x = 72 x = 18 ...

**Math**

It depends a little on what math class you're in how they want you to solve this. But basically, this function is a parabola and you need to find the vertex. x=-b/(2a), where a=-0.5, and b=12 x=-12/(2*-0.5)=12, this is the x coordinate of the vertex and also the number of ...

**math**

First subtract 45-27 = 18 Then subtract 5-8 = -3. Next multiply 3 by -3 = -9 then divide 18 by -9 = -2 finally, the absolute value of -2 = 2.

**Repost- Calculus; someone please help**

Yes it is the right equation. Good job!

**calculus, limits, l'hopital**

Here's what's weird: I graphed the equation and from the left the function approaches 1 as x approaches zero, and from the right it approaches e^3. Doesn't that mean the limit does not exist? The question, however, is multiple choice, with choices of infinity, 0, 3...

**calculus, limits, l'hopital**

Thank you so much! I didn't think to remove the 6x. So helpful, thank you!!

**calculus, limits, l'hopital**

Using l'hopital's rule, find the limit as x approaches zero of (e^(6/x)-6x)^(X/2) I know l'hopital's rule, but this is seeming to be nightmare. I just don't seem to get anywhere. I mistyped the first time I posted this question.

**advanced funtions**

Similarities: Domain and Range the same. Same end behavior, you could say "as x approaches infinity or negative infinity". Differences: They don't have the same reflection characteristics because an x^4 function can have non-symmetrical bumps in it. They're ...

**calculus, limits, l'hopital**

Using l'hopital's rule, find the limit as x approaches infinity of (e^(6/x)-6x)^(X/2) I know l'hopital's rule, but this is seeming to be nightmare. I just don't seem to get anywhere.

**math**

6.4-y = 6 and 2/5 convert 6 and 2/5 to decimal... 2/5=.4 6.4 - y = 6.4 subtract 6.4 from both sides -y = 0 divide both sides by -1 y = 0

**Math**

1.24*10^-3 = .00124

**algebra word problems**

294/14=21 L=6*21=126

**8th grade math**

935*1.4 mil = P*4.5 mil (mult 935 by 1.4) 1309 mil = P*4.5 mil (divide both sides by 4.5) 290.8888888888888=P So P = $290.89

**I need an answer--molecular/electron geometry**

THanks so much

**I need an answer--molecular/electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd appreciate some ...

**math**

put it into simple form?

**Equivalent. Fraction**

What is 6/12 in a equivalent fraction

**Algebra**

56/21?

**Molecular and Electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd appreciate some ...

**math**

if a figure has 48 square units as it's area and 38 units as it's perimeter what would the figure look like?

**Science**

Because u lose them in your life time and half of them if you smoke

**english**

diction?

**Molecular and Electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :)

**REPORT CARD QUESTION**

Congrats

**science**

The formula for frequency is: frequency = 1 / T, where T = Period. That is e.g. "cycles per second". The formula for time is: T (Period) = 1 / frequency. Note: T = Period and t = Time

**SCl6 is used in....?**

Thank you very much

**SCl6 is used in....?**

But elements compose compounds. So a compound, say SCl6, cannot create silicon dioxide. . . . I'm now thoroughly confused.

**SCl6 is used in....?**

But isn't SCl6 a compound within itself?

**SCl6 is used in....?**

Does anyone know what SCl6 is used in? Note: I don't mean SF6. *Sulfur Hexachloride* Thank you :)

**SCl6, Sulfur Hexachloride**

Very helpful, thank you!

**SCl6, Sulfur Hexachloride**

I have a project on Sulfur Hexachloride, or SCl6, but I can't find any info on it! Any help?

**Chemistry**

I have a project on Sulfur Hexachloride, or SCl6, but I can't find any info on it! Any help?

**Chemistry**

your dumb

**Chemistry**

When ice melts, it absorbs 0.33 per gram.How much ice is required to cool a 12.0 drink from 72 to 37, if the heat capacity of the drink is 4.18 ? (Assume that the heat transfer is 100 efficient.)

**physics**

A tennis ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s. What is the magnitude of the acceleration due to gravity on ...

**physics**

Explain why the occupants in a running car observe objects on the roadside as though they are running backwards.

**public relation**

what has the result of what the artist Chris Brown led for the public to say or view him?

**technology**

does that mean the hard drive size or this Double-layer DVD±RW/CD-RW or something

**technology**

what does Hard Disk-FDD/HDD mean?

**Geometry**

In Triangle SUM, if SU = 10 cm and UM = 15 cm then MS must be less than how many centimeters? 10 15 20 25...... Am I right?

**english**

like you might avoid paying your bill in order to purchase something you want

**english**

What effect does lacking personal responsibility have on materialism?

**geometry**

Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.

**geometry**

Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.

**chemistry**

A catalytic converter combines 2.55 g CO with excess O2.What mass of CO2 forms?

**algebra**

11T over 28 - T over 4=1

**math**

4x27= partial products: product:

**physics/chemistry**

(a) An ideal gas occupies a volume of 1.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. i got that right to be 2.5e19 molecules (b) If the pressure of the 1.0 cm3 volume is reduced to 1.0 10-11 Pa (an extremely good vacuum...

**physics/chemistry**

oh, ok. that makes sense. Thanks!

**physics/chemistry**

i am getting .15 and .24 and i keep getting it wrong. i don't know what im doing wrong.

**physics/chemistry**

A rigid tank contains 0.40 moles of oxygen (O2). Determine the mass (in kg) of oxygen that must be withdrawn from the tank to lower the pressure of the gas from 37 atm to 23 atm. Assume that the volume of the tank and the temperature of the oxygen are constant during this ...

**physics**

An object weighing 325 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 250 N. Immersed in oil, the object weighs 275 N. (a) Find the density of the object. (b) Find the density of the oil.

**calculus**

Find all the critical numbers for the function f(x) = cube root of 9-x^2. help please?!

**helping abused children**

here let me help you: The Stubborn Child Law enacted by Massachusetts in 1646 permitted parents to A. use corporal punishment when children disobeyed them. B. keep children out of school if they were needed for family work purposes. C. institutionalize a child born with a ...

**Principles of finace**

How do you find use the annual net profit with the payables and inventory costs to determine the total annual cost a firm would need to achieve the industry level of operational efficiency?

**chem**

the ionization energy for atomic hydrogen is 1.31x10^6 J/mol. what is the ionization energy for He^+

**physics**

A container is filled to a depth of 15.0 cm with water. On top of the water floats a 27.0 cm thick layer of oil with specific gravity 0.800. What is the absolute pressure at the bottom of the container.

**math**

the sum of two decimal numbers is 3.9. their difference is 0.9, and their poduct is 3.6 what are these two numbers?

**childhood obesity**

what are some question you can ask to a child that is overweight?

**Organic Chemistry**

I just finished an organic chemistry lab experiment on separating and analyzing an unknown acid/neutral compound mixture using extraction, recrystallization, TLC, melting point analysis, and IR spectrum. In the instructions, "Obtain an IR spectrum for each of your ...

**Chemistry**

Use average bond energies to calculate delta Hrxn for C(s)+2H2O(g)-->2H2(g)+CO2(g)

**english**

like what are some specefic ideas as to what he did to improve them

**english**

question How would you think a writer would hope to see themselves as a writer in the future? What should they still need to learn to strenghten it to make it better?

**English 101**

uncanny- to be too strange marvelous- extremely good or great

**Chemistry Kinetics**

well i guess I need the negative sense it's the reactant -d[H2 + I2]/dt = k[H2]^x[I2]^y is this correct?

**Chemistry Kinetics**

If I had the equation H2 + I2 --> 2HI could I write the rate of reaction as d[H2 + I2]/dt = k[H2]^x[I2]^y were x is the order of reaction with respect to x and y is just the order of reaction with respect to y thanks

**math**

why the formula for the area of a trapezoid this A=1/2 x h x(a+b)

**Pre-Calcs**

Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units In the 1978 the population of blue whale in the southern hemisphere was thought to number 5000. Since whaling has been outlawed, and an abundant food ...

**physics**

A 7.2 cm tall cylinder floats in water with its axis perpendicular to the surface. The length of the cylinder above water is 1.4 cm. What is the cylinder's mass density?

**physics**

What is the apparent weight of a 36 kg block of aluminum (density 2700 kg/m3) completely submerged in a fluid with density 1300 kg/m3?

**physics**

A single conservative force F = (7.0x - 11)i N, where x is in meters, acts on a particle moving along an x axis. The potential energy U associated with this force is assigned a value of 29 J at x = 0. (a) What is the maximum positive potential energy? At what (b) negative ...

**physics**

A stone with a weight of 5.38 N is launched vertically from ground level with an initial speed of 25.0 m/s, and the air drag on it is 0.269 N throughout the flight. What are (a) the maximum height reached by the stone and (b) its speed just before it hits the ground

**chemistry**

Find the pH of a buffer that consists of 1.6 M sodium phenolate (C6H5ONa) and 1.0M phenol (C6H5OH). (pKa of phenol=10.00)

**Math**

can you explain how you figures out Heather's portion of the bill

**chem**

What is the volume of 325 mL of a sample of gas at 51.0°C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.

**chem**

What is the volume of 325 mL of a sample of gas at 51.0°C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.

**chemistry**

NH4NO3(s) H2O(g) + N2(g) + O2(g) Consider the unbalanced equation above. What will be the total volume of gas produced at 720. mm Hg and 570.0°C when 2.50 g of NH4NO3 completely decomposes? Use molar masses with at least as many significant figures as the data given.

**chemistry**

How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

**chemistry**

How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

**spanish**

Direct- and indirect-object pronouns combined 8-16 Dos amigas hablan. Completa las oraciones. MARÍA: Juanita, ¿quién ______ mandó las flores? JUANITA: Alejandro ____, ____ mandó. MARÍA: ¿Vas a mostrar ____ a tus papás? ...

**math**

6+7_<__7+6

**math**

fill in the correct symbol. < = > 6+7 __ 7+6

**1st grade**

how i am going to fix this sentence. i go to scott elementary school

**physical science**

how much power is used to lift a 100-n bucket a distance of 10-m in 12 seconds

**Physics**

Thanks very much.

**Physics**

I am doing an assignment where I need to find an example of a spring that is used in a common device. Is a phone chord considered a spring? Thanks for your help.

**Chemistry**

A quantity N2 of occupies a volume of 1.4L at 290K and 1.5atm . The gas expands to a volume of 3.1 L as the result of a change in both temperature and pressure. I have the find the density of the gas at these new conditions?

**Algebra**

Please let me know if I figured this out correctly ... 2t + 4 >/= t -t -t 1t + 4 >/= 0 - 4 -4 1t >/= -4 /1 /1 t >/= -4

**Chemistry**

Calculate the H3O+ concentration and pH of a carbonated beverage that is .10 M in dissolved CO2- (Essentially all of the H3O+ comes from the first stage of dissociation, CO2 + 2H2O = H3O^+ + HCO3-, for which K1 = 4.4 x 10^-7)

**Science**

Thank you! :)

**Science**

What do noble gases have in common?

**PHYSICS !**

Yes thank you so much!

**PHYSICS !**

If a ball is sliding down a ramp that is on a slant, so that the ball sliding down falls off. Is the speed of the ball constant(meaning staying at the same speed)? or Speeding up? If so, how?

**ANATOMY**

i found out its Stratified Squamous -___-

**ANATOMY**

anyone know ?

**ANATOMY**

Is the lining of the esophagus either : 1) Simple Squamous? OR 2) Stratified Squamous? -Please help . I know it has to be either 1 or 2.

**Math**

110 X 90/100=99