# Posts by Alexis

Total # Posts: 945

**Chemistry**

The heat of neutralization of HCl(aq) and NaOH(aq) is -55.90 kJ/mol of water produced. If 50.00 mL of 1.16 M NaOH at 25.15 ºC is added to 25.00 mL of 1.79 M HCl at 26.34 ºC in a plastic-foam cup calorimeter, what willthe solution temperature be immediately after the ...

*November 1, 2015*

**8th grade algebra**

I'm not sure how to finish simplifying this problem. 1. (3 x 10^-2) - (6.2 x 10^1) = (.003 x 10^1) - (6.2 x 10^1) = -6.197 x 10^1 (need to make positive 'tween 1 and 10)

*October 29, 2015*

**Math**

Naomi and 50 red beads and white beats the number of red beads is one more than six times the number of white bees how many red beans does Naomi have. What does one more than six times the number of white beads mean coming from me Alexis I do not know how to show my work you ...

*October 19, 2015*

**History**

What is the difference between a subsistence economy and the market economy that developed as a result of nineteenth century transportation innovations?

*October 15, 2015*

**history**

Describe the primary economic activity for each of the three colonial regions: the New England colonies, the Middle colonies, and the Southern colonies. Explain how the geography of each region helped determine its economy. I don't know how to explain it and I don't ...

*October 13, 2015*

**8th grade pre-algebra**

Thanks for showing how you got rid of the negative exponent on #30. As for #42, that's just how it was on the worksheet. Thanks again.

*October 12, 2015*

**8th grade pre-algebra**

Can you check the following questions,please? Simplify 30. (-2y)^0/(3x^2)^-3 = 1/(3^-3)(x^-6) = 1/-27x^-6 = 27x^6 42. (-7x^5/14y^3)^3 = (-1^3)(x^15)/(2^3)(y^9) = (-1x^15)/8y^9

*October 12, 2015*

**Social Studies**

This is All wrong

*October 8, 2015*

**Math**

The number of blocks has line in the ones place the number in the hundreds place is one more than the number in the tens place those two numbers equal 11 how many blocks are there

*October 7, 2015*

**8th grade geometry**

Yes, that was how the question was asked. Not sure how I'm supposed to take your response about using wrong spelling.

*October 5, 2015*

**8th grade geometry**

How do I find the answer to the following question without knowing the 3rd vertices? Graph a triangle with vertices (3,-2), (-3,2) and height of 3 units. The answer is supposed to be (3, -2), (0,1) and (-3, -2).

*October 5, 2015*

**Maths**

How would you work out when this function turns and goes in a different direction? (like a turning point for a parabola): s=0.2t(t-5.1)(t-9.1)

*October 1, 2015*

**math**

how would you find x in an equation like this? 10 = 0.6x(x - 5.8)

*September 30, 2015*

**8th grade algebra**

We did graphing reflections of images homework from the book with problems that gave the vertices for each figure and said either reflect over x or y. This time, the homework is a worksheet and directions are to graph the reflection across either x or y with some value. ...

*September 16, 2015*

**Chemistry**

CaO +H2O= Ca(OH)2 The initial mass plus the test tube is 10.860g after picking up water to give calcium hydroxide the total mass of the tube and ca(oh)2 is 11.149g What is the mass of the test tube? ..I did 11.149-10.86=.289 h2o , 40.08/56.08=ca % 16/56.08=o% then I got lost...

*September 15, 2015*

**Science**

Thank you very much

*September 13, 2015*

**Science**

*A peer review verifies conclusions. A peer review proves everyone else wrong. *A peer review maintains standards of the field. *A peer review identifies sources of errors. A peer review gains direct funding.

*September 13, 2015*

**Science**

Am I correct??

*September 13, 2015*

**Science**

I don't know though

*September 13, 2015*

**Science**

I would say A C and D

*September 13, 2015*

**Science**

Which are reasons to get a claim peer reviewed? Check all that apply. A peer review verifies conclusions. A peer review proves everyone else wrong. A peer review maintains standards of the field. A peer review identifies sources of errors. A peer review gains direct funding.

*September 13, 2015*

**Science**

Hurricane Katrina, which hit the Gulf Coast of Louisiana and Mississippi on August 29, 2005, had the second lowest ever recorded barometric pressure at 920mb. Convert this pressure to units of atmospheres, and inches of Hg. 1 bar = 0.98692 atm 0.92 bar = 0.92*0.98692 atm = 0....

*September 2, 2015*

**Algebra**

Is it 20*122=2.440?

*August 22, 2015*

**Algebra**

ok thx 👍🏽

*August 22, 2015*

**Algebra**

While touring a city ,you see a skyscraper and wonder how tall is it.You see that it is clearly divided into floors.You estimate that each floor is 20 feet high.You count that the skyscraper has122 floors.How tall is this skyscraper ?

*August 22, 2015*

**British lit**

I need help with a few questions. They need to be answered to help me write an essay on Neoclassicism. Please help me. Thank you! 1. Throughout his career, critics accused John Dryden of catering to people in political power. Does Annus Mirabilis fit this accusation? Why or ...

*June 17, 2015*

**basic english**

I would say C

*May 26, 2015*

**basic english**

The gist of the saying went something like this: If a person wants to get ahead in life, you have to be willing to work for it. Which of the following language conventions is violated in the sentence above? Use of a colon Verb tense Pronoun-antecedent agreement Punctuation of ...

*May 26, 2015*

**Possessive pronoun english**

Which of the following sentences contains a possessive pronoun? The beautiful red sweater was hers. She and I went to the beach. She’s the one to do the job correctly. It is only right that the trophy belongs to her. is this one A?

*May 26, 2015*

**sentence fluency english**

Which of the following options best demonstrates sentence fluency? The two boys went to the store to buy some milk with their mother and her boyfriend, who had a broken foot after supper. The two boys went to the store to buy some milk after supper with their mother’s ...

*May 26, 2015*

**basic english**

Thanks

*May 26, 2015*

**basic english**

i was actually debating between 4 and 5

*May 26, 2015*

**basic english**

1. Understanding which flavors complement each other can take years of practice. 2. Following these basic tenets will allow you to produce recipes that your friends and family will love to share. 3. Once you've mastered flavor combinations, however, there's no end to ...

*May 26, 2015*

**basic english**

The president invited Senator Smith to the White House for a meeting before preparing his address to the United States congress. Which of the following is an error in capitalization in the sentence above? The word “president” should be capitalized The word “...

*May 26, 2015*

**English**

Thank You

*May 26, 2015*

**Analytic Geometry**

Water spouts from a horizontal pipe 12 meters above the ground. Three meters below the line of the pipe, the water trajectory is at a horizontal distance of 5 meters from the water outlet. How far from the water outlet will the stream of the water hit the ground?

*May 11, 2015*

**Analytic Geometry**

A parabolic suspension bridge cable is hung between two supporting towers 120 meters apart and 35 meters above the bridge deck. The lowest point of the cable is 5 meters above the deck. Determine the lengths of the tension members 20 meters and 40 meters from the bridge center.

*May 11, 2015*

**Language Arts**

Writeacher the story is Mieko and Fifth Treasure the author I don't know but its in my unit test I don't really use the book.

*May 8, 2015*

**Language Arts**

What happens at the climax of the story

*May 8, 2015*

**Language Arts**

Why did Miss Suzuki visit Mieko's house

*May 8, 2015*

**7th grade math (probability)**

Thank you!!

*May 8, 2015*

**7th grade math (probability)**

I'm re-posting corrections originally from Wednesday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number ...

*May 8, 2015*

**LA**

i need some help on this same question

*May 7, 2015*

**7th grade math (probability)**

I'm posting corrections from yesterday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a ...

*May 6, 2015*

**7th grade math (probability)**

I'm posting corrections. Still not sure how to answer last question. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a red color? Ans: P(even)*P(red...

*May 5, 2015*

**7th grade math (probability)**

1. Cmdr's coffee shop offers a coffee special with coffee syrups of vanilla, chocolate, and caramel. You can also choose between a latte, and cappuccino. How many different coffees can you make for the special? Ans: 6 (VLatte, ChocLatte, CLatte; VCap, ChocCap, CCap) 2. ...

*May 5, 2015*

**Math - 7th grade**

Thanks! I have some additional problems to post later.

*May 5, 2015*

**Math - 7th grade**

I think I figured out answers to #1 and #3. 1. Ans: P(1) = 1/6 1/6 = x/66 x = 11 times 3. Ans: P(7) = 1/8 1/8 = x/40 x = 5 times. Could you check the others?

*May 5, 2015*

**Math - 7th grade**

For #3, there was a picture of a spinner with numbers 1-8.

*May 5, 2015*

**Math - 7th grade**

Can you check/explain the following: 1. If you roll a number cube 66 times, how many times should you expect to roll a 1? a. 9 times b. 11 times c. 8 times d. 10 times Ans. P(1) = favorable outcome/possible outcome = 66/396 , (1 x 66rolls, and 6sides x 66 rolls = 396) = 16.66...

*May 5, 2015*

**chemistry--last time i promise**

CO(g) + H2O(g)-->CO2 + H2 (g) reaction occurs in a 2.0 Ll reactor at 800 degrees celsius. The reaction conditions are such that a complete conversion of reactants into products results. The reactor is charged initially with 5.0 atm of CO and 8.0 atm of water vapor. ...

*May 3, 2015*

**Chemistry**

A scuba tank contains heliox, a special breathing gas composed of 5.0% oxygen and the remainder helium, for use by divers that spend extended amounts of time at depth underwater. The volume of the tank is 20 L and the pressure within it is 1500 lb/in2. Calculate the mass in ...

*May 3, 2015*

**Consumer math**

Chucks Computer Corporation has 10,000 shares of stock outstanding. A. If it declares dividends of 12,000, what is the divided per share of stock? B. what would you share of the declared dividend if your owned 50 shares? Thanks for the help.

*April 30, 2015*

**Consumer math**

A deposit of 4,000 at 9.5% for 270 days

*April 30, 2015*

**Analytic Geometry**

write the equation of the line a) parallel to b)perpendicular to 4x+3y-10=0 and is 3 units from the point (2,-1)

*April 29, 2015*

**Analytic Geometry**

The line through the points (-1, 6) and (5, -2)intersects the line through (4, -4) and (1,7).Determine the angle between these two intersecting lines.

*April 26, 2015*

**ccmess**

I was so sad that they told me no worksheets

*April 25, 2015*

**Analytic Geometry**

The line segment joining a vertex of a triangle and the midpoint of the opposite side is called the median of the triangle. Given a triangle whose vertices are A(4,-4), B(10, 4) and C(2, 6), find the point on each median that is two-thirds of the distance from the vertex to ...

*April 23, 2015*

**7th grade math**

Oh.thank you!

*April 23, 2015*

**7th grade math**

Can you check the following problem? (forgot to incl last night) 1. Which is an equivalent equation to (2/3)x - 1 = 1/2 that does not contain fractions? (2/3)x = 1 + 1/2 (2/3)x = 3/2 x = 3/2 * 3/2 x = 9/4 x = 2 1/4 A. 4x - 6 = 3 4x = 9 x = 9/4 x = 2 1/4 B. 4x - 2 = 3 4x = 5 x...

*April 23, 2015*

**Analytic Geometry**

What are the lengths of the segments into which the y-axis divides the segment joining (-6,-6) and (3,6) ?

*April 23, 2015*

**7th grade math**

THank you.

*April 22, 2015*

**7th grade math**

Can you check the folowing problems. 1. 8(10) + 8(4) = 8(14) is an example of which property? A. Distributive property B. Associative property C. Identiy property D. Commutative property Ans:A 2. By Saturday night, 3 inches of rain had fallen in Happy Valley. The weekend ...

*April 22, 2015*

**Analytic Geometry**

Show that the points A(-2, 6), B(5, 3), C(-1, -11) and D(-8, -8) are the vertices of a rectangle.

*April 22, 2015*

**Analytic Geometry**

The ordinate of a point P is twice the abscissa. This point is equidistant from (-3, 1) and (8,-2). Find the coordinates of P.

*April 22, 2015*

**physics**

A 4.00 kg ball traveling North with a momentum of 11.2 kg.m/s collides with a 6.0 kg ball traveling West with a momentum of 18 kg.m/s. The two balls stick together and head off as one. What is the momentum of the combined masses? What is the velocity of the combined masses?

*April 19, 2015*

**AP Physics**

The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision. After the collision the white ball has a speed of 1.43 m/s. To the nearest tenth of a degree, measured counterclockwise from east, what angle does it ...

*April 18, 2015*

**Chemistry**

Which of the following processes are spontaneous? (Select all that apply.) a. average car prices increasing b. a soft-boiled egg becoming raw c. a satellite falling to Earth d. water decomposing to H2 and O2 at 298 K and 1 atm I thought it would c and maybe d

*April 18, 2015*

**AP Physics**

The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision. After the collision the white ball has a speed of 1.43 m/s. To the nearest tenth of a degree, measured counterclockwise from east, what angle does it ...

*April 18, 2015*

**physics**

Anna applies a force of 19.5 newtons to push a book placed on a table. If the normal force of the book is 51.7 newtons, what is the coefficient of kinetic friction? A) .01 B) .20 C) .38 D) .48

*April 7, 2015*

**7th grade math**

Can you check the following? 1. (-1/3)x = -5 multiply both sides by -3 because dividing by fraction is same as multiplying by its reciprocal, right? Ans: -5(-3)= 15 2. x - (-3) = -8 + (-3) + (-3) x = -11 3. The signup fee to join Flexible Fitness Gym is $25. The monthly fee is...

*April 1, 2015*

**7th grade math (probability)- additional questions**

Thanks

*March 31, 2015*

**7th grade math (probability)- additional questions**

Thanks. Can you check the one from yesterday as well?

*March 31, 2015*

**7th grade math (probability)- additional questions**

Here are additional problems that weren't included in original post from 3/30. 4. There are 5 different color jolly ranchers in a bag - 10 cherry, 15 watermelon, 12 grape, 10 apple, and 8 raspberry. What is probability that you'll choose raspberry? Ans: 8/55 =.1454 = ...

*March 31, 2015*

**7th grade math (probability)**

I'm not sure how to answer this: 3. THe 7th grade wants to have a back-up representative just in case the first teacher is absent. Based on the same scenario as #2, if a math teacher was chosen to be the 7th grade representative, what is the probablility that the back-up ...

*March 30, 2015*

**7th grade math (probability)**

Thanks!

*March 26, 2015*

**7th grade math (probability)**

Can you check these, please? Ten cards numbered 1 through 10 are mixed together and then one card is drawn. Find the probability of each event. Write each answer as a fraction, percent, and decimal. 14. P(less than 5) = 4/10 = 2/5 Ans: 2/5, 40%, 0.4 15. P(greater than 3) = 7/...

*March 26, 2015*

**7th grade math**

Can you check these? 1. Jonelle is running on a track that is 2/3 of a mile long. So far she has run 4/5 of the way around the whole trace. How far has she run so far? Ans: (2/3)(4/5) =8/15 mile 2. A recipe for muffins needs 3/4 of a cup of milk. You are making 1/2 of the ...

*March 25, 2015*

**math**

Alice is 5 feet and has shadow of 4 feet long. how tall is the tree?

*March 24, 2015*

**7th grade math**

1. Evan withdrew a total of $160 from an ATM machine over a 4-day period. He withdrew the same amount of money each day. a. Write an expression to represent the total amount that Evan's account changed each day. Ans: 4d b. What integer represents the total amount that Evan...

*March 24, 2015*

**CHECK ANSWERS PLEASE!!!**

1) A 2) C 3) B 4) D I got 100% in Connections academy SS

*March 18, 2015*

**Math - 7th grade (repost)**

Can someone please help? I'm given a box and whisker plot that represents the cost, in dollars, of 12 CDs. How can I determine how many CD's cost between $14.60 (Q1 value) and $26 (Q3 value) and how many CD's cost less than $14.60?

*March 18, 2015*

**Math - 7th grade**

I'm given a box and whisker plot that represents the cost, in dollars, of 12 CDs. How can I determine how many CD's cost between $14.60 (Q1 value) and $26 (Q3 value) and how many CD's cost less than $14.60?

*March 17, 2015*

**math**

Find the fifth term of a geometric sequence whose fourth term is 8/9 and whose seventh term is 64/243.

*March 16, 2015*

**math**

The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of doses, t is the time between doses, and k is ...

*March 15, 2015*

**Science - 7th grade (repost)**

Can you check my homework? 38. How does natural selection lead to evolution? a. Organisms mutate to adapt to their environment. b. Helpful traits accumulate among surviving members of the species. c. Overproduction provides food for stronger members of the species. d. ...

*March 12, 2015*

**Science - 7th grade**

Can you check my homework? (don't think I'd posted before) 38. How does natural selection lead to evolution? a. Organisms mutate to adapt to their environment. b. Helpful traits accumulate among surviving members of the species. c. Overproduction provides food for ...

*March 12, 2015*

**Science - 7th grade**

Can you check the following? Experiment A: Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount. After three weeks on the diet, the rats’ masses are measured again to see if ...

*March 11, 2015*

**Math - 7th grade**

thanks!

*March 11, 2015*

**Math - 7th grade**

Can you check following? 1. The football association wants to increase the number of students who attend the football games for the upcoming season. In order to accomplish this, the association is surveying students to gain more information about student interest in sports. ...

*March 11, 2015*

**Chemistry**

The vapor pressure is dependent upon the temperature and since the temperature is the same in both jars the vapor pressure is the same.

*March 11, 2015*

**chemistry**

the vapor pressure of carbon sulfide is 355.6 torr at 25 degrees Celsius. what is the vapor pressure of a solution prepared by dissolving 12.52 g naphthalene (C10H8, 128.2 g/mol) in 125.0 mL CS2 liquid (76.14 g/mol, 1.261 g/mL)? Assume the solution obeys Raoult's law, and ...

*March 4, 2015*

**7th grade math**

Can you help with geometry? 1. Sally constructs a triangle with one side 6 inches long and another side 8 inches long. What is the 3rd side? (haven't learned Pythagorean theorem) Ans: 6 + x > 8 x > 2 6 + 8 > x 14 > x 8 + x > 6 x > -2 so, x must be > 2...

*February 27, 2015*

**math**

OQRS IS A QUADRILATERAL SUCH THAT OQ= -6,3 OR= -3,7 AND OS 1,5. T IS THE POINT ON OQ SUCH THAT OT:TQ= 2:2. PROVE QRST IS A PARALLELOGRAM

*February 25, 2015*

**chemistry**

You add 8.7g of iron to 21.30mL of water and observe that the volume of iron and water together is 22.41mL . Calculate the density of iron.

*February 22, 2015*

**physics**

An object travels at 5.00 m/s in the +x direction and 4.00 m/s in the +y direction. What is the magnitude of its velocity?

*February 17, 2015*

**physics**

An object has a velocity of 5.00 m/s at an angle of 30.0˚ north of east. If we define east as the +x direction and north as the +y direction, what is the magnitude of vy?

*February 17, 2015*

**physics**

A person walks 4.0 miles east and then makes a 50° turn to the right and walks another 2.0 miles. How far is she from her starting point?

*February 17, 2015*

**Science - 7th grade**

Can you check the following: 1. Draw a Punnett Square to show a dog breeder inbreeding to maintain a purebred line of golden retrievers. Ans: would the parental cross look like Gg x GG or GG x GG? 2. Draw a Punnett Square to show a farmer crossing a plant that produces a large...

*February 15, 2015*

**math**

I am a positive integer less that 30, two more than my value is a mulitple of 6 the sum of my digits is a mulitple of 7 find this number

*February 13, 2015*