# Posts by Anna

Total # Posts: 2,765

**Chemistry**

Substance A has a density of 4.0 g/mL and substance B has a density of 2.0 g/mL. If we have equal-mass samples of each, which has the greatest volume?

**Chemistry**

Substance A has a density of 4.0 g/mL and substance B has a density of 2.0 g/mL. If we have equal-mass samples of each, which has the greatest volume?

**British Literature**

I need to identify the figure of speech in this saying:"thy mind is an opal." I think it is a metaphor. Am I correct?

**British Literature**

I need help in identifying the figure of speech in the following statement: "Your reason, dear venom, give thy reason." Any ideas?

**precalc**

Find sec x if sin x = -0.6 and cos x = 0.8.

**english**

m too old- is this sentence correct or wrong

**Biology**

OK, I give up. No where do I find a clear yes or no to this question. Fossil evidence indicates that humans have not undergone many anatomical changes over the last 200,000 years. From what I have read it seems like they have. Am I correct?

**Biology**

How do the heart, capilaries, arteries and veins work to distribute materials through the body?

**British Literature**

I did read the sparknotes info but all I could come up with was Roman Catholics, sin, Satan. I can't figure out a way to really make this connect to the story. Any help would be appreciated.

**Physics**

In an arcade game a 0.087 kg disk is shot across a frictionless horizontal surface by com- pressing it against a spring and releasing it. If the spring has a spring constant of 163 N/m and is compressed from its equi- librium position by 4 cm, find the speed with which the ...

**Physics**

A 180 g arrow is shot straight up into the air with a speed of 17 m/s. It reaches a maximum height of 13.7449 m. Find the initial kinetic energy. The accel- eration of gravity is 9.8 m/s2 . Answer in units of J.

**math**

Most of the time easy some subjects are hard

**Geometry**

Thank You guys soo much :))

**Geometry**

How many degrees, like a triangle equals 180 degrees

**Geometry**

How much does a four sided polygon equal??

**Geometry**

Explain why you cannot use AAA to prove two triangles congruent.

**Geometry**

Thank You

**Geometry**

If two game boards have the same area, are the game boards congruent? Explain your answer

**english**

What does the dragon in The faerie Queene represent?

**MAATH**

Rearrange the terms of the equations fo form Ax + By = C I really get confused about general form, like how do I do it, I don't understand at all. x+3y = -1 2x+4y-12 = 0

**History**

What is absolution?? In detail Please :)

**MaTH**

Rearrange the terms of the equations fo form Ax + By = C I really get confused about general form, like how do I do it, I don't understand at all. x+3y = -1 2x+4y-12 = 0

**History**

what is the roman civil law and what time period was it in?? and what was protestant ethic and what time period was that in??

**English**

How is the gerund used in this sentence?- His least favorite activity is playing scales

**special populations**

Which has a greater influence on a person’s health: individual choices and actions (micro perspective) or community policies and resource availability (macro perspective)? Discuss three reasons why you selected one over the other.

**algebra2**

determine the domain and range:{(x,y)|y2=5x}

**Science**

Which of the following plants is nonvascular? a. ferns b. mosses c. gymnosperms d. club mosses is "b" correct?

**Science**

Which of the following plants is nonvascular? a. ferns b. mosses c. gymnosperms d. club mosses is "b" correct?

**Science**

Imagine an environment that is very dry and receives a lot of sunlight. Water is found deep below the soil. Which of the four groups of plants could survive in this environment? Explain your answer.

**Algebra I (Math)**

okay theirs 2 parts to this problem: (by the way i already did part 1) 1. construct a table of the areas of triangles all of which have bases 6 in. long,but whose altitude are respectively 2 in.,6in.,10 in.,and 14 in. draw a graph to represent given in this table.(this is ...

**physics**

consider 4 masses mA=1kg, mB=2kg, mC=3kg, mD=4kg, placed at the vertices of a square ABCD of side 4cm. Specify the position of G the center of mass of the system{A,B,C,D}. determine the position of G. Thank you :)

**math**

could you please help me with this problem

**math**

Fadi is in a boat 3 kilometers away from the nearest point A at the sea shore.5kilometers away from A is the home of fadi. knowing that he can row 6km/hr and run 10km/hr.the objective of this exercise is to find the position of point B on the sea shore where fadi should land ...

**chemistry**

A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ...

**math**

Ok thank you so much :)

**math**

Hi, Can someone please help me with my math. The distance between Capeton and Jonesville is 80 miles. Thescale on the map is 0.75in : 10 miles. How far apart are the cities on the map? A. 6in B. 60in C. 600in D. 1067in Thank you :)

**Math Problem Solving**

Oh im sorry i did this problem wrong. Ms.sue did it correct :) Sorry again.

**Math Problem Solving**

6n+8n-2n+3/2 6n+8n=14n-2n=12n+3/2 answer: 12n+3/2

**chemistry**

8. If x grams of S are needed to obtain 0.4 grams of SO3, how many grams of SO2 can be obtained from the same amount of S? (A) 0.32 g (B) 0.62 g (C) 0.40 g (D) 0.16 g (E) Can not be calculated from the given data. I am not sure how to set up this problem. I calculate the ...

**Psychology**

As you enter your Grandma Thorndike's house you ears being to hurt as you notice she is once again playing her favorite "Contry Music" album. You soon get caught up in the christmas festivities...talking with family..eating...and playing psychological trivia. The...

**Medical Insurance**

A hospital received a reimbursement rejection from the fiscal intermediary for two outpatient procedures that were performed the same day. Who generated the rejection?

**helping abused children**

what happens in most cases of sexual abuse a-the abuser is removed immediatley from the home b-the abuser is prosecuted in court c-nothing can be done until evidence is found d-the abuser receive institutuional counseling as a precautionary measure

**helping abused children**

the stubborn child law of 1646 by the state of massachusetts permits parents to do what

**math**

Jim divied -2 by an integer and his result was between -1 and 0 Which integur could have been the divisor

**math 116**

-2[38(-56-50) -2[38-106]

**Algebra**

How do you find the Horizontal Asymptote of y= (x+2)/(x-6)?

**Geometry**

Thank You

**Geometry**

Ya its correct

**Geometry**

The m<A is 10 more than 4 times its supplement. Find the m<A. I don't understand how to solve this problem.. Thank You for your help.

**AlgebrAlgebra-Mathmate or BobPursley or Reiny**

Thank you-I understand what you're saying-I really appreciate the help

**AlgebrAlgebra-Mathmate or BobPursley or Reiny**

I had asked a question earlier and bob pursley nicely answered it but I do have a question concerning it still- perhaps someone could clarify it- f(x) = logx is a logarthmic function. Bob Pursley said it could be because the base is implied but my question is the way it is ...

**Business Communication**

You are a technical writer in a large company who is working on a training manual to help new users learn the company's computer system. Employees will use your manual in training seminars taught by your company's trainers. The manual will also serve as an on-the-job ...

**Business Communication**

I put A as the answer

**Business Communication**

A. decision makers or opinion molders in an organization. B. everyone who receives it. C. individuals with the highest status in an organization. D. people who represent the opinions or attitudes of the majority.

**Business Communication**

The primary audience for your message is made up of

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

Thank you-could you look at my new post-I just needed clarification about f(x) = logx you said this would be true but doesn't it need parentheses or a separation between log and x for this to be correct? Thank you

**Algebra-Bob Pursley please check-Mathmate or Reiny or Dr. Bob, please check**

I just noticed something-I had asked about if f(x) = 1/x is an exponential function and I think you rewrote it as f(x) = x^-1. Therefore, f(x) = 1/x is NOT an exponential function, correct?

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

Thank you for the explanations- I appreciate it

**Algebra-Bob Pursley orMathmate or Reiny or Dr. Bob, please check**

Could one of you please check when you have time. Thank you

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it would be because it ...

**Algebra-Please check**

When you have time,Could someone please check this morning the two problems I listed in the first post along with this one The function f(x) = logx is a logarthmic function-I think this is false because it should be written as log(then a number)x, correct Thank you very much

**Algebra**

I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it would be because it ...

**Algebra-Reiny please explain this**

Reiny, thank you-I get it now thanks again

**Algebra-Reiny please explain this**

Hi Reiny, I posted this problem earlier and you responded but I don't get the reasoning- The problem was -2log8(x+1) = -8 you said multiply by -2 and then you put log8(x+1)=4(wasn't that dividing by -2) log8(x+1)^2 = 8 (how did you get to the power of 2 and =4 became =...

**Algebra-Could Mathmate or Reiny or Dr. Bob look at this if you have time**

Please give me some direction for the above problem Thank you

**Algebra**

How do I start to solve -2log8(x+1) = -8? I think -2log8(x+1) is log8^(x+1)to the 2nd but then what do I do because then I think I should do log-8/log8 = x+1)^2 but that doesn't work at all Thank you for any help you can give

**10th grade**

Suppose that a kid was casually sledding down a gentle slopping hill going 6 feet per second. Then, he hit a steeper part of the hill and started accelerating at a rate of 1.2 feet/second squared. At the bottom of the steep part of the hill he was going 10.56 feet/second. How ...

**Calculus**

that weird 'e' symbol is supposed to be a theta sign

**Calculus**

A line through the origin, rotates around the origin in such a way that the angle, ¦È, between the line and the positive x-axis changes at the rate of d¦È/dt for time t¡Ý0. Which expression gives the rate at which the slope of the line ...

**Calculus**

If y=xln(x)^2 , then dy/dx=

**Calculus**

If f(x)= sqrt(4sin(x)+2), then f'(0)=

**physics**

A plane designed for vertical takeoff has a mass of 51 kg. Find the net work Wnet as it accelerates upward at 1 m/s2 through a distance of 34 m after starting from rest.

**Calculus**

A rectangle is insribed between the parabolas y=4(x^2) and y=30-x^2. What is the maximum area of the rectangle? Domain: [-3,3] Range:[-2, 40] THANK YOU!

**Math question**

I don't either I got 62.8

**Calculus**

A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6 , .8), the particle has horizontal velocity dx/dt=3. What is its vertical velocity dy/dt at that point? I don't know what equation to use or anything for this ...

**Calculus**

If the volume of a cube is increasing at 24 in^3/min and the surface area of the cube is increasing at 12 in^2/min, what is the length of each edge of the cube? I know that dV/dt=24 and ds/ds=12. I also know that Volume=s^3 and Surface Area=6*s^2, but what do I do from there?

**Calculus**

What is the linearization of f(x)=e^x at x=1?

**statistics**

Hello. I recently had this question on my Midterm "Suppose the number of students coming to Thomas’s Monday office hours follows a Poisson distribution with mean 5. Further suppose that 30% of these students wear glasses. What is the probability that for the next ...

**Anatomy**

The gland that helps regulate the endocrine system by secreting stimulating hormones is the____. Thanks for helping!

**Spanish**

Thank you

**Spanish**

Voy a la piscina means I'm going to the pool, correct? Would I say I'm going to the mail as Voy al correo. How do I say I need to send a card? Thank you

**physics**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 6.2 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B.

**Physics**

A colony of troglodytes has been in a lengthy feud with its neighbors on the adjacent cliff. Colony A finally develops an important military breakthrough: it rolls bombs off its cliff at known rates of speed, thus gaining pinpoint accuracy in its attacks. The acceleration of ...

**Physics**

A plane drops a hamper of medical supplies from a height of 3410 m during a practice run over the ocean. The plane's horizontal velocity was 121 m/s at the instant the hamper was dropped. What is the magnitude of the overall velocity of the hamper at the instant it strikes...

**Earth Science**

Crust, mantel, outer core, inner core.

**math**

Your brother traveled 117 miles in 2.25 hours to come home for Christmas. What's the average speed that he was traveling?

**Spanish**

How would I say "He looks at art." Thank you

**chemistry**

Which of the following acids has the weakest conjugate base? a....4.2E-09 b...9.2E-03 c....6.3E-06 d....1.2E-01

**chemistry**

what is the equilibrium concentration of acetate ion if the equilibrium concentration of acetic acid is .40 M, the pH is 3.85, and Ka is 1.8E-05?

**chemistry**

which of the following salts do you expect to have the lowest water solubility? a...SrF2 b...Rb2O c...Ga2O3 d...CsNO3 All the numbers are subscripts

**chemistry**

to find the molarity of an aqueous solution of an ionic solid what do you need to know? a... mass of solid, formula of solid, volume of water b...moles of solid, formula of solid, volume of water c....mass of solid, formula of solid, volume of solution d....moles of solid, ...

**chemistry**

is a negative Kc possible. Also, is a negative Ka possible?

**chemistry**

what is the pH of an .200 M aqueous solution of NaOH?

**Chemistry**

Umm, I don't understand, how do I found out what the limiting reagent is?

**Chemistry**

8.40 grams of Hydrogen gas reacts with 48.2 grams of Oxygen gas. Give the mass of the water vapor produced and the mass of the excess reactant left over. Can somebody please explain stoichiometry to me? I've failed the test and the retest. I'm usually able to balance ...

**History**

How did the shortage of good farmland contribute to the desire for federal union (Confederation)

**History**

What areas of British North America seemed most vulnerable to American expansion? How did the shortage of good farmland contribute to the desire for federal union (Confederation?)

**helping abused children**

what is the best statement about children who are abused

**physics**

thank you!

**physics**

Two masses are connected by a string. Mass A is on a flat roof and mass B is hanging over the edge of the roof. The mass on the roof is 15 kg and the hanging mass is 5 kg. The edge of the roof is 100 m above the ground. The two masses are initially at rest with the hanging ...