Friday

October 28, 2016
Total # Posts: 647

**physics**

A 7.4kg block starts 1.2m above the ground, at the top of a frictionless ramp. At the bottom of the ramp is a flat stretch of rough (μk = 0.15) ground 3.0m long. After sliding 3.0m, the ground becomes frictionless, and the block hits a spring (k = 1.6kN/m). a. Calculate ...

*October 24, 2016*

**Algebra 2**

The sum of three numbers is 36.the first number is two times the second number and the second number is four less than the third number. What are the numbers?

*October 13, 2016*

**Concepts in number sense**

An odd number whose thousands digit is twice its hundreds digit

*September 13, 2016*

**Maths**

Prove (cosecθ-cotθ)^2=1-cosθ÷1+cosθ

*August 23, 2016*

**American Government**

The answer is not D, it is C. Unicameral legislature, just did the unit test and Ms. Sue gave wrong answer.

*August 21, 2016*

**java program**

Create a program that will print the student’s letter grade given the following specifications : 90 – 100 = A 80 – 89 = B 70 – 79 = C 60 – 69 = D below 60 = F

*July 6, 2016*

**math/algebra**

Find the hang time for a golf ball hit 150 feet into the air. The time T in seconds is given by the function T(x)= square root of x over 2

*June 23, 2016*

**Language Arts**

I believe it is D then..?

*May 12, 2016*

**Language Arts**

Can you check my answer? Matt hiked the trail yesterday. It made him tired. Which sentence combines the two sentences using a gerund phrase? A- hiking the trail yesterday made Matt tired B- Matt hiked the trail and it made him tired. My answer C-It made Matt tired to hike the ...

*May 12, 2016*

**Chemistry **

What is the product for the following reaction: The reaction is a chair conformer of 1-methyl-1-cyclohexanol, with OH in the axial position and the methyl in the equatorial position, reacting with HCl. I'm wondering if this reaction is both SN1 and E1, and what are the E1 ...

*April 16, 2016*

**Math about weight**

Pedro has a bad back and can only lift 32 lbs. He is going hiking and has packed his sleeping bag, two pairs of socks ,and 2 bottles with 4 liters of water each. If Pedro is carrying his limit, one pair of socks weighs .8 lbs, and his sleeping bag weighs 3 lbs, how much does 1...

*April 11, 2016*

**Math about weight**

Pedro has Abadia back and can only lift 32lbs. He is going hiking and has packed his sleeping bag, two pairs of socks, and 2 bottles with 4 liters of water each. If Pedro is carrying his limit, one pair of socks weighs .8 lbs, and his sleeping bag weighs 3 lbs, how much does 1...

*April 11, 2016*

**Multiplicative inverse**

Angelo says that if you know one unit rate in a proportional relationship, the other unit rate is always the multiplicative inverse of the unit rate you know. Is Angelo correct? Explain

*April 10, 2016*

**Math Grade 7 **

To improve her cardiovascular capacity,Mia wants to increase the distance she walks each day. She now walks 1/2 mile in 8 1/2 minutes. If Mia keeps the same pace, will she be able to walk 1 1/2 miles in less than 1/2 hour?

*April 10, 2016*

**Math**

Laurie and Anna are running a 3 mile race. After 5 minutes, Laurie has run 3/5 miles and Anna has run 7/10 mile. If both ladies can keep their same pace for the remainder of the race, how many minutes ahead of Laurie will Anna cross the finish line?

*April 10, 2016*

**Math**

Victor can ride his bike 15 miles on 2 hours. He uses this ratio 15:2, to write an equation that shows the relationship between the distance he bikes and the times it takes. Victo's work is shown below. Is his equation correct? h=km 15=k*2 7.5=k So, the equation is h=7.5m ...

*April 10, 2016*

**Math**

Victor can ride his bike 15 miles in 2 hours. He uses this ratio 15:2, to write an equation that shows the relationship between the distance he bikes and the time it takes. Victor's work is shown below. Is his equation correct?

*April 10, 2016*

**statistics**

A sign on the gas pumps of a chain of gasoline stations encourages customers to have their oil checked, claiming that one out of four cards need to have oil added. If this is true, what is the probability of the following events? a. One out of the next four cars needs oil. b. ...

*March 17, 2016*

**Science **

An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.5 A, how much electrical energy is used by the bulb in 15 minutes?

*March 4, 2016*

**Science **

Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.

*January 26, 2016*

**Science **

Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.

*January 25, 2016*

**Math**

ewrite each equation below. Then solve your new equation. Be sure to check your solution using the original equation. 4/x=x+3

*January 11, 2016*

**Math**

Where did the 10 come from ? 3^2 is 9

*January 6, 2016*

**Math**

The parabola y=x^2 How can that equation be changed to shift the parabola three units to the left and five units down

*January 6, 2016*

**Math **

The price of gas went up by 0.5% last month. Suppose gas currently costs $2.44 a gallon. If the price of gas continues to increase at this rate. What will it cost one year from now? When will it cost $5 a gallon?

*January 6, 2016*

**Spanish 2**

In the following, underline the correct past tense. So, the preterite and imperfect Los estudiantes ( tomaban/tomaron) apuntes mientras la profesora ( hablaba/hablo) Would it be tomaban and hablo

*January 5, 2016*

**Math**

Mary cut pizza into 16 slices. If she gave 3/8 of the pizza to her friend, how many slices of pizza did she give away

*January 5, 2016*

**Spanish 2**

In the following, underline the correct past tense. So, the preterite and imperfect Los estudiantes ( tomaban/tomaron) apuntes mientras la profesora ( hablaba/hablo) Would it be tomaban and hablo

*January 5, 2016*

**Trigonometry**

For which angles in degrees if any, is sin A not equal to 1/csc A? Answer for 0 through 359 degrees.

*December 8, 2015*

**Math**

<2.3>*<4,3>

*December 7, 2015*

**Math**

It is possible to have an angle where sin A > 1. True or False

*December 7, 2015*

**Math**

cotA = tan(90degrees- A) True or False The vectors <4, 5> and <-10, 8> are orthogonal True or False 2<3, 5> = 16 True or False <2. 3>*<4, 3> = <2, 6> + <4, 5> = Find c if a = 3, b = 5, and A = 30degrees=

*December 3, 2015*

**Math**

cotA = tan(90degrees- A) True or False The vectors <4, 5> and <-10, 8> are orthogonal True or False 2<3, 5> = 16 True or False <2. 3>*<4, 3> = <2, 6> + <4, 5> = Find c if a = 3, b = 5, and A = 30degrees=

*December 3, 2015*

**Math**

A plane is flying on a course with a vector of <250, 100>, where the 250 is the speed due north, and the 100 is the speed due east. The wind is blowing <25, 5> where the directions are also north and east, in the same order. How fast is the plane flying? All values...

*December 3, 2015*

**Math**

Given that an equation of the form f(x) = x^n has n solutions, and that the solutions are equally spaced at a given radius in the complex plane, discuss why complex solutions must occur in conjugate pairs when .

*November 20, 2015*

**Math**

Given that an equation of the form f(x) = x^n has n solutions, and that the solutions are equally spaced at a given radius in the complex plane, discuss why complex solutions must occur in conjugate pairs when .

*November 17, 2015*

**Math**

For f(x) = 0.01(2)x, find the average rate of change from x = 3 to x = 8. A.0.08 B.0.496 C.2.48 D.5

*November 4, 2015*

**Math**

The answer is b

*November 4, 2015*

**Math**

Which of the following options is an equivalent function to f(x) = 4(3^2x? A.f(x)= 36^x B.f(x)= 4(9)^x C.f(x)= 144^x D.f(x)= 4(6x) I think that's how you put the exponents in standard notation

*November 4, 2015*

**Math**

It is exponents

*November 4, 2015*

**Math**

Which of the following options results in a graph that shows exponential growth? A.f(X)= 0.4(3)^X B.f(X)= 3(0.5)^X C.f(X)= 0.8(0.9)^X D.f(X)= 0.9(5)^-X

*November 4, 2015*

**Math**

Please Help

*November 4, 2015*

**Trigonometry **

Suppose a planet has a radius of 5,000 km. Starting at the point on its surface at 0 degrees longitude and 0 degrees latitude,find the distance to the point on its surface at 30 degrees longitude and 60 degrees latitude.

*November 2, 2015*

**Math**

Draw the line through the point (4,5)that is parallel to the y-axis. Write the equation of this line and state its slope. Can anyone assist me. The example or instructions is not in my text.

*October 5, 2015*

**I need Help!!!**

Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (−3, 1) and (9, −3)

*October 3, 2015*

**Algebra **

Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (Objective 3) (−3, 1) and (9, −3)

*October 3, 2015*

**math**

Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What ...

*September 25, 2015*

**Trigonometry **

Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43‹41Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What ...

*September 21, 2015*

**English**

Thank you!!!!!

*September 16, 2015*

**English**

Can someone please tell me if I got the answers right?

*September 16, 2015*

**English**

Oops! I'm sorry! OK, my answers. #7 - Proper. #8 - Collective. #9 - Compound. #10 - Common.

*September 16, 2015*

**English**

For questions 7-10, identify the type of noun underlined in each sentence. 7. The AZTECS made sacrifices to their gods. (2 points) Select all that apply. Common. Proper. Compound. Collective. 8. A SWARM of insects surround the raft as we drifted down the river. (2 points) ...

*September 16, 2015*

**Intermediate math**

I have to factor these two problems but am having some difficulties X^3y^6-64 & (x+y)^3+(x-y)^3

*September 13, 2015*

**psychology**

Which approach would explain that phobias are acquired through classical conditioning and the hypochondriac's "sickness behavior" is reinforced by sympathy and attention?

*September 10, 2015*

**Science**

A hollow iron cube has measures 5cm on each side and has a mass of 20g will the iron cube sink or float?

*September 10, 2015*

**Trigonometry **

Two planes are flying at the height of 10-km. They are going at the same speed, and both traveling due north. If the planes are 3,000 km apart as measured along the surface of the earth, what angle do the lines from the planes make to the center of the Earth make?

*August 24, 2015*

**history**

Among the legislative acts passed during Franklin Roosevelt’s first term as president, which one gave relief to artists, actors, and writers? A. Works Progress Administration B. National Recovery Administration C. Tennessee Valley Authority D. Civilian Conservation Corps

*August 14, 2015*

**chem 101**

How many milliliters of 0.205 M NaOH solution are needed to completely neutralize 5.50 mL of 0.865 M H2SO4 solution?

*July 23, 2015*

**science**

An astronaut has a mass of100kg. She recedes from her spacecraft using spurts of gas from a small unit on her back. If the force generated by the gas spurt is 50N, calculate her acceleration.

*June 16, 2015*

**Finance**

what is the present value of $2500 per year for 9 years discounted back to the present at 11 percent?

*June 9, 2015*

**algebra**

A cubic polynomial function f(x) has leading coefficient -2 and intercepts the y-axis at 2. If f(1)=1, and f(-2)=-2, find f(-1) and write the complete function.

*April 6, 2015*

**us history**

Who explored enough of South America to deem it a new continent?

*April 1, 2015*

**health part2**

The sole activity of the respiratory system is breathing. True False The exchange of gases between the blood and tissue cells is external respiration. True False Air flows in the process of pulmonary ventilation because of pressure differences between the atmosphere and the ...

*March 28, 2015*

**health part2**

The sole activity of the respiratory system is breathing. True False The exchange of gases between the blood and tissue cells is external respiration. True False Air flows in the process of pulmonary ventilation because of pressure differences between the atmosphere and the ...

*March 28, 2015*

**Body Systems II**

Arteries carry blood ________ the heart.

*March 28, 2015*

**Social Studies**

Thanks, Doppleganger I just got 100%

*March 17, 2015*

**math**

Shelby walks at a constant rate. the equation that represents this relationship is d=4t, where d is the distance in miles and t is the time in hours. What does the constant 4 tell you about shelby? Make use of structure. What question is answered by the equation d=4(32)?

*March 17, 2015*

**Science**

Haha, me too. :)

*February 26, 2015*

**Science**

Your name, it's Meredith Grey so I was wondering if you watched Grey's Anatomy?

*February 26, 2015*

**Science**

Thank you, you really helped me understand this better. You want Grey's Anatomy, don't you? :)

*February 26, 2015*

**math**

The probability of getting a white marble from a bag is 1/5. If there are 37 white marbles in the bag, what is the total number of marbles in the bag

*February 12, 2015*

**Math**

A square with a side length of 2s has a smaller square inscribed. The vertices of the smaller square are at the midpoints of the sides of the larger square. What is the ratio of the larger square to the area of the smaller square? Express your answer in simplest form.

*February 10, 2015*

**algebera**

Kylie is right The answer are 1.B 2.C 3.B 4.A 5.B I got a 100% with these answers

*February 10, 2015*

**word problems**

I am totally confused by the way you did this. It totally lost me. Can you please tell me in a different way? Where did you get the 12 from in your fractions?

*January 15, 2015*

**word problems**

miguel is 5ft 10 inches tall On a sunny day he casts a shadow of 4ft 2 inches long. At the same time, a nearby electric tower casts a shadow 8ft 9 inches long. How tall is the tower? Please help me set up the equation. Do i use is actual height or his shadow?

*January 15, 2015*

**Math 6th grade**

At lunch 3 1/4 small pizzas were equally devided into 4 people one person eats 1/4 of what he was given how much of a whole pizza did that person eat

*December 10, 2014*

**8th grade Math help**

7.615 so 8

*October 15, 2014*

**Math**

Thank you so much!

*October 13, 2014*

**Math**

luc has 1 h of homework to do. He has assignments to complete for social studies and math, and a science test. he sepends 2/5 of the time completing the social studies assignment, and 1/3 of the time on math. How much time does Luc have left to study for the science test?

*October 13, 2014*

**math **

Evaluate: -3/4 - 1 3/8 A: - 17/8 B: -1 C: 17/8 D: -5/8 I put C but its was incorrect. I'm to sure what the correct answer would then be. can you show me how to solve it and how to achieve the correct answer?

*October 7, 2014*

**physics**

turtle goes 0.50m/s rabbit goes 3.0m/s^2.. rabbit gives turtle 195 seconds head start. how long will it take for hare to catch turtle? 195*.5=97.5m +amount covered while rabbit is catching up

*October 6, 2014*

**math**

Jessie has a box of 1000 marbles 75 are yellow 230 are red 331 are blue and 364 are green what fraction of his marbles are yellow and what fraction of his marbles are red

*September 2, 2014*

**math**

Jessie has a box of 1000 marbles . He has 75 yellow , 230 red, 331 blue and 364 green what fraction of his marbles are yellow? What fraction of his marbles are ref?

*September 2, 2014*

**Advanced Math**

why are you using 150 in the second example isn't it supposed to be 120?

*August 28, 2014*

**Mathematics**

price company received an invoice in the amount of $3,800 dated may 24 for merchandise they purchased. the terms of the sales are 3/15, 2/30, n/45. what payment should be made if the invoice is paid on June 20?

*August 26, 2014*

**Chemistry**

A 11.0-mL sample of an unknown H3PO4 solution requires 116mL of 0.140 KOH to completely react with the H3PO4. What was the concentration of the unknown H3PO4 solution (answer in M). H3PO4(aq) + 3KOH(aq) --> 3H2O(l) + K3PO4(aq)

*July 23, 2014*

**help **

If you could design a study on anything about human behavior to show how it is the same across cultures, what would that be?

*July 19, 2014*

**gender roll of development**

Do you think it is possible our biological make up dictate whether we will be maternal or parental and we choose our roles accordingly ?

*July 15, 2014*

**Social Studies**

yes that is correct

*July 15, 2014*

**Astronomy**

You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 0.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun): (Points : 10)

*July 10, 2014*

**Algebra 2**

Which matrix equation is equivalent to 3x+2y-5z=20 5x-10y+8z=17 -8+11y-2z=29

*May 19, 2014*

**biology help**

The cells in the retina that detect color and bright light are called _________ cells.

*May 19, 2014*

**biology help**

my first answer on the first question antidiuretic i'm not sure on second answer

*May 19, 2014*

**biology help **

Frequent urination is associated with alcohol consumption because alcohol suppresses the hormone (A)__________. As a result, urine becomes more (B)__________, and the body loses more water than it should.

*May 19, 2014*

**statistics**

At the beginning of the semester, students who registered for a statistics course were randomly assigned to two sections, each taught by a different instructor. At the end of the semester, we would like to test whether there are differences in performance on the final exam ...

*May 1, 2014*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...

*April 30, 2014*

**statistics**

A fictional study was used to examine the effect of a new antianxiety drug on levels of anxiety. Sixty participants were randomly assigned to one of two groups: 1) new antianxiety pill and 2) placebo pill. One hour after taking the medication or placebo, all of the ...

*April 30, 2014*

**statistics**

A professor is interested in the relationship between the number of hours students study for a quiz and their quiz grades. She asked each student to record the number of hours that he/she studied for the final exam. She also recorded the students’ grades in percentages (...

*April 29, 2014*

**statistics**

A clinical psychologist notices that admission to the psychiatric hospital she works at seem to vary by season. Using a chi-square test, she rejects the null hypothesis that hospital admission is independent of season. What conclusions can she make? a. Hospital admissions are ...

*April 28, 2014*

**statistics**

For which of the following would it be most appropriate to use an ANOVA to analyze the data? A. A researcher is interested in determining the most effective format for advertising. He randomly assigns 60 people to one of three groups: (1) television commercial, (2) radio ...

*April 27, 2014*