Sunday
May 1, 2016

# Posts by Alexis

Total # Posts: 892

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

For #3, there was a picture of a spinner with numbers 1-8.
May 5, 2015

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

Oh.thank you!
April 23, 2015

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

THank you.
April 22, 2015

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

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

Thanks. Can you check the one from yesterday as well?
March 31, 2015

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

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

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

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

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

1) A 2) C 3) B 4) D I got 100% in Connections academy SS
March 18, 2015

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

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

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

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

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

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

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

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

Science
I will tell you answers when I am finished with mine. :-)
February 12, 2015

Physics
A magnifier has a magnification of 6x. How far from the lens should an object be held so that its image is at the near point distance of 25 cm? I tried doing the problem by using the equation M = 25cm / f. M = 25 cm/6 = 4.17 cm However when I put the answer into mastering ...
February 10, 2015

Can you check the following? 1. Alicia shoots basketball at a hoop 100 times. She hits the backboard and misses with 2/5 of her hots, hits the rim and misses with 32% of her shots and makes basket with rest of her shots. How many baskets did she make? A. 68 B. 40 C. 32 D. 28 ...
February 2, 2015

physics
An astronaut visits a moon of Saturn, and decides to measure the accel. of gravity. He ties a rock (m=2 kg) to a rope (1.25 m), pulls the rock back 10 degrees, and releases it into simple harmonic motion. What is the accel due to gravity on the moon? (*I have no idea where to ...
February 1, 2015

physics
The effective k of the diving board shown here is 1675 N/m. A heavy diver is bouncing up and down at the end of the diving board. With what frequency does he bounce up and down? How long does it take for him to complete one bounce (up and down)? What is the mass of the man? I ...
February 1, 2015

Can you help me with genetics questions? Directions: In each set, tell which word does not fit with the others. Then explain why you think it does not. You must mention all words. 1. Aa, Heterozygous, Hybrid, Homozygous Ans: Homozygous doesn't belong because letters are ...
January 29, 2015

Ok, thanks!
January 26, 2015

Choose the correct evaluation of each underlined word. (Larsen's underlined in this sentence) 6. The Larsen’s decided not to shutter their windows even though they were taking vacation at the height of hurricane season. A. Larsen’s contains a correct apostrophe. ...
January 26, 2015

Can you check these simple interest problems? 1. If you borrow \$421 for nine years at an interest rate of 4%, how much interest will you pay? Ans: I = prt I = \$421*.04*9 I = \$151.56 2. If the balance at the end of 8 years on an investment of \$630 that has been invested at a ...
January 21, 2015

thanks!
January 21, 2015

Are these correct now? Ans#4: Smiths' Ans#7: It's
January 21, 2015

Can you check the following? Punctuate the following sentences with appropriate apostrophes. 1. Whos the partys candidate for vice president this year? Ans: Who's, party's 2. Our neighbors car is an old Chrylser, and its about to fall apart. Ans: neighbor's, it'...
January 21, 2015

ok, thanks for checking!
January 17, 2015

Can you check these please? 4. A local bakery sold 60 loaves of bread in one day. If 65% of these were sold in the afternoon, how many loaves were sold in the afternoon? Ans: x = .65 * 60 x = 39 loaves 7. Ruben bought 6new books for his collection. This increased his ...
January 17, 2015

Can you check the following? 10. A store pays \$10 for a bracelet, and the markup is 115%. A customer will also pay 5 1/2% sales tax. What will be the total cost of the bracelet to nearest cent? t = 1.15 x 10 t = \$11.5 (markup price) t = \$10 + 11.5 t = \$21.50 (cost of bracelet ...
January 16, 2015

math
how many positive whole numbers smaller than 2003 have 2 as their first digit and 1 as their last digit
January 16, 2015

mathematics
he dimensions of a rectangular prism are (5x squared - 4x - 3) (x squared - x + 1) cm by (3x squared - 5) cm. Find a polynomial which represents 1. the total surface are of the prism. 2. the total length of the edges of the rectangular prism 3. the volume of the prism.
January 14, 2015

Math
Example of a real-world relationship where there is no clear independent or dependent variable.
January 13, 2015

Thanks!
January 13, 2015

Can you check the following? Add a comma if needed to words in () in following sentences. 1. She was a (beautiful gentle) woman. Ans: beautiful, gentle 2. "Come now", said Scully sharply to the (three seated) men, "move up and give us a chance at the stove."...
January 13, 2015

Physics
suppose you have a weight of 60 N. if the earth's mass decreased to one fourth its current mass, with no change in radius, then what would you weigh? Can you please explain how I can solve this problem?
January 12, 2015

Thanks!
January 9, 2015

Can you check these and let me if reason correct also? Choose the correct prounoun. 1. Each of the suspects had (his, their) own alibi. Ans: his (because each is singular) 2. Jeff and Isabel planned (his and her, their) wedding. Ans: their (because subject is plural) 3. Did ...
January 9, 2015

Can you check the following? Identify the sentence type. 1. I like playing basketball, and my brother likes playing tennis. Ans: compound 2. I'll help you if you help me. Ans: complex 3. My mother cooked dinner while I was doing my homework. Ans: complex 4. Because she ...
January 8, 2015

physics
A proposed space station consists of a circular tube that will rotate about its center(like a tubular bicycle tire). The circle formed by the tube has a diameter of 1.1km. What must be the rotation speed(revolutions per day) in an effect nearly equal to gravity at the surface ...
January 7, 2015

math
On Monday, 247 students went on a trip to the zoo. All six buses were filled and seven students had to travel in cars.How many students were in the bus
January 7, 2015

Thanks!!
December 17, 2014

sorry, typo on #4 still. answer is just 112
December 17, 2014

For #4 should be: m/8 = 5 +9 m/8 = 14 m = 14*8 m = 112/8
December 17, 2014

Can you check these problems? 1. 4x^2 + 3x - 4x +5 = 4x^2 - x + 5 2. m - n + m - n - n = 2m - 3n 3. (7x + 5 - 3y) - (-3x - 5 +4y) = 7x + 3x -3y + 4y + 0 = 10x - y = 0 4. m/8 - 9 = 5 m/8 = 5 + 9 m = 14/8 m = 7/4 = 1 3/4
December 17, 2014

Can you check these? 3. Simplify (56/8+3)*2-1 = (7+3)*2-1 = 10*2-1 = 20-1 = 19 9. A spool of lanyard is 21 yards long. If it is cut into pieces that are each 1.75 yards long, how many pieces of lanyard will there be? Ans:21/1.75 = 12 pieces 12. (3/5)x - 10 = 1/6 Ans: (3/5)x = ...
December 15, 2014

thanks! hopefully, the others i posted are correct too.
December 14, 2014

Can you check these additional problems? 36. 10 - h >= 21 -h >= 21 - 10 -h >= 11 h >= -11 38.p + 8.5 > 1 p > 1 - 8.5 p > -7.5 40. 8-2(5-9g) = -128 8 - 10 + 18g = -128 -2 + 18g = -128 18g = -128 + 2 18g = -126 g = -126/18 g = -7 41. (3/5)k - 1/3 = -1 (3/5)k...
December 14, 2014

Can you check these? 3. Simplify (56/8+3)*2-1 Ans = (7+3)*2-1 = 10*2-1 = 20-1 = 19 9. A spool of lanyard is 21 yards long. If it is cut into pieces that are each 1.75 yards long, how many pieces of lanyard will there be? Ans:21/1.75 = 12 pieces 12. (3/5)x - 10 = 1/6 Ans: (3/5)...
December 14, 2014

Thanks! didn't realize it copied twice.
December 9, 2014

Can you check these? 1. A recipe for chocolate pudding calls for 1 ¼ cups of milk. The recipe makes 3 servings. How many cups of milk are needed to make 9 servings? Ans: 1.25/3 = x/9 3x = 9*1.25 3x = 11.25 x = 11.25/3 x = 3.75 or 3 3/4 cups of milk 2. Two trees in Mrs. ...
December 9, 2014

I'm confused and not sure of the difference. When do i use the ratio vs when do i have to add ratios? I posted a couple of questions like that and was told they were wrong. Example#4. 5 out of 6 students prefer pepperoni to sausage. If Ms. Greene has 120 students, how many...
December 6, 2014

Can you check these? 1. Olivia typed 2 pages in 15 minutes. Write an equation relating the number of minutes m to the number of pages typed. How long will it take her to type 10 pages at this rate? Ans: 15/2 = 7.5 = 7.5 * 10 = 75 minutes 2. If the ratio of Type O to non-Type O...
December 6, 2014

Thanks for the explanations!!
December 6, 2014

Can you check my homework? (wasn't really sure about #4 and #6) 1. Tekell ate 10 pieces of candy in the same time that Mackensay ate 4 pieces. How many pieces will Tekell have eaten when Mackensay eats 6? Ans: 10/x = 4/6 4x = 60 x = 15 pieces of candy 2. Savannah made \$102...
December 6, 2014

Trig- math
@Steve, I plugged in the numbers in the equation. I see where I went wrong. Thank you!
November 23, 2014

Trig- math
@Damon, thank you! :)
November 23, 2014

Trig- math
Find the area of a triangle if the sides of the triangle have the lengths 849mi, 930mi, and 1301mi. Here's my work: a=849 b=930 c=1301 A=.5(849)(930)sinA sin A = 394,785 mi^2 (this number doesn't seem right to me, can you explain to me what I did wrong)?
November 23, 2014

Trig
UPDATE: I figured it out.
November 23, 2014

Trig
I need help with my vectors unit. I'm really confused about how to set them up. Please help. a.) Given u=2i-5j and v=-i+3j, determine -6u-3v? b.) Find the component form of v if |v|=4 and the angle it makes with the x-axis is 60 degree. c.) Given u=5i+3j and v+3i+2j, find...
November 23, 2014

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