Posts by daisy
Total # Posts: 274
Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing for a healthy young person. The frequency of one of the ultrasonic waves is 84 kHz. (The range of hearing for a healthy young person is 20 Hz to 20 kHz.) (a) What is the smallest...
February 16, 2017
If you find a job posting for a community college that clearly states that the job will close on 08/15/2017, what does this mean? a. Someone will be hired by that date. b. The employer is only hiring until that date. c. After that date, the employer will no longer accept job ...
February 3, 2017
Let A denote the portion of the curve y = sqrt(x) that is between the lines x = 1 and x = 4. 1) Set up, don't evaluate, 2 integrals, one in the variable x and one in the variable y, for the length of A. My Work: for x: integral[4,1] sqrt(1+(dy/dx)^2) dy/dx = 1/2sqrt(x) (dy...
January 25, 2017
Calculus - still confused
Oh sorry about the that, I was starting to do u substitution and was changing my limits to [16,1] but then remembered I didn't have to evaluate. And gotcha! so then for C would the set up be ?[-2,4] 2pi(sqrt(x) - 2) ?(1 + (dy/dx)^2) dx oh wait... wouldn't x = -2 give ...
January 25, 2017
Let A denote the portion of the curve y = sqrt(x) that is between the lines x = 1 and x = 4. 1) Set up, don't evaluate, 2 integrals, one in the variable x and one in the variable y, for the length of A. My Work: for x: â«[4,1] sqrt(1+(dy/dx)^2) dy/dx = 1/...
January 25, 2017
Can you please check to see if these answers are correct? I have provided my work as well! That you! This is much appreciated!! 1. What is the volume of the solid that is generated by revolving the region bounded by the curves x = 3y^2-2 and x = y^2 and y = 0 about the x axis...
January 23, 2017
Hello, I would like to make sure the answers to these questions are correct. 1. Using the shell method, what is the volume of a solid that is generated by rotating the region by y = x^2 and x = y^2 about the x axis. My Work: r = y h = sqrt(y) - y^2 2pi ?[0,1] (y)((sqrt(y) - y^...
January 18, 2017
It's a calendar Because a calendar hosts a year and every day is new but old because a day such as that has been before. Like a year before has same days and weekends recurring in another year.
January 17, 2017
I would like to know if my answers are correct: Disclaimer: We are allowed to keep our answers in formula form 1. Use the washer method to find the volume of the solid that is generated by rotating the plane region bounded by y=x^2 and y = 2-x^2 about the axis y=-1 My Work: [...
January 16, 2017
Take a sub ex:eng Let the marks of 10 friends be 1,2,3,4,5,6,7,8,9,10. Mean=sum of all data ÷ no.of data. So' mean= (1+2+3+4+5+6+7+8+9+10) ÷ 10 . Solve it and you get mean of marks of your friends in English. Do this for other subjects.
December 4, 2016
Graphing Linear Equations and Inequalities
Fill in the t-table below for the equation. Then graph the line on the grid by selecting two of the points from your table. 3x+4y=-16 x y ?4 0 4
November 14, 2016
A box of mass m = 59.0 kg (initially at rest) is pushed a distance d = 84.0 m across a rough warehouse floor by an applied force of FA = 204 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and the box is 0.100. ...
October 23, 2016
Of the 40 students in a gym class, 13 played volleyball, 12 ran track (4 of whom did a push up), and the remainder were absent. A.) What proportion of the class ran track? B.) What percentage played volleyball? C.) What percentage of the runners did a push up? D.) What ...
August 25, 2016
Maths, geography, life sciences and physical scien
Identify three courses or study fields you are interested in following after grade 12.provide two reasons why you find this a suitable course for each choice
March 6, 2016
Block B in the figure weighs 739 N. The coefficient of static friction between block and table is 0.34; angle θ is 26°; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.
March 1, 2016
The air was in a cylinder equipped with the piston absorbs 565 duels of heat and expands from an initial volume of .10 l to a final volume of .85 L against an external pressure of 1.0 ATM what is the change an internal energy of the air within the cylinder
November 4, 2015
1. Mailey mother brought her a pet hamster. She is keeping Montey, the hamster, in a box with a length of 8.3 in.,a width of 6in.,and a height of 5,25in. Mailey plans on covering Montey's box with contact paper. How many square inches of contact paper is needed to ...
March 4, 2015
1. Read each situation. Write whether a bill of attainder, an ex post facto law, or a writ of habeas corpus woul prevent the situation from happening. A. ______________ shortly after video cameras were invented, a man evident aped a rock concrete. Years later this was declared...
March 2, 2015
A roll of paper towels is 10 inches high and 2.5 inches in diameter. How many full squares inches of paper towel can fit on the roll in 15 rotation? * all I need is a formula of this question. Do I use lateral surface area formula or total surface area formula
February 20, 2015
Which statement is true of an organ system? A. It supports all part of the organism. B. it is not necessary for the survival of the organism. C. One organ system can take over for another organ system. D. It has no connection with other organ system in the same organism.
February 17, 2015
1.Quadrilateral GHJK has vertices at the following coordinates: G(-2,-6), H(-8,-8), J(-6,-2), and K(0,0), what would be the new vertices if the quadrilateral was dilated by the scale factor of 1.5? G':_________ H':_________ J':_________ K':_________ Could ...
February 7, 2015
In "In Just-," the poet uses the words "and bettyandisabel come dancing / from hop-scotch and jump-rope and / it's / spring" to create a mood of (Points : 5) boring routine. happy activity. peaceful days. hopeless dejection.
January 26, 2015
George is making a permanent for his favorite baseball team. He wants the short edge to be 14 inches and the height in the middle of the right triangle to be 24 inches. What is the length of diagonal side AB?
January 24, 2015
Q1.A tree was chopped by the Samuels family for the holidays. How tall was the tree originally if the piece they chopped down was 7feet tall, and fell 4 feet from the stump? Q2. Mr pratt's rake is leaning up against a wall. If the top of the rake hits the wall 5 feet above...
January 24, 2015
Cannon wants to make a garden with a border of his yard. He has lumber in several different lengths. Which three lengths could be used to make a right triangle to fit into the corner of his yard? A. 4ft.,6ft.,10ft. B.7ft.,12ft.,15ft. C.5ft.,12ft.,13. D.10ft.,15ft.,20.
January 24, 2015
In the experiment water clock : what changes (independent variable) , how does it responds to the changes made(dependent variable), and what is being controlled (controlled variable). Pleas I really need this by today. And also my question for science fair is what part does ...
January 19, 2015
I have to find the adverb in each sentence. Then I have to identify the verb it modifies. 1.)Native Americans originally developed lacrosse. Adverb- originally. Verb-developed. 2.)It was first played by the Iroquois. Adverb- first. Verb- played. 3.)It was played differently ...
January 14, 2015
When creating clay forms what must be done with inside?? When applying glaze to a ceramics piece, it is important to wax the foot, or the bottom of the piece. What might happen if it isn't waxed??
December 15, 2014
How to tell by an example which is a robot and which is a nobot? My example is: security lights that turns on whenever someone walks by= nobots I need to know how do you know by an example which is which
December 13, 2014
Survey of Mathematics
Suppose a car rental agency gives the following choices: Option A: $30 per day plus 40 cents per mile Option B: flat $50 per day (unlimited miles) At what mileage are both rates the same if you rent the car for 3 days?
December 4, 2014
An oven is a technological system. Which of the following describes an input into this system? A. Setting the temperature B. Burning gas releases heat. C. A thermostat monitors the temperature and increases the gas flow when the temperature falls too low. D. A cake is baked Is...
September 9, 2014
How did the Protestant Reformation in Europe influence the settlement of North America? A. European settlers of different religions choose to establish new colonies in order to spread their faith and practice their beliefs. B. religious thinker John Calvin was a prominent ...
September 8, 2014
After creating a column heading and/or typing text within a column, what must you do to move text to the next column? A. Add a column break B. Select the next column and start typing C. Highlight the next column D. Change the page orientation Is the answer A?
September 7, 2014
I answered this already. Should you multiply the answer in letter b to 2? QUESTION: Phil Younghusband is a sensational striker of the Philippines National Football team Azkals. An avid fan of his claims that Phil can kick the football and give it an initial speed of 50 m/s. If...
August 8, 2014
Two students perform a simple experiment. One flicks a dime from the edge of a table. At the same instant, the other student drops a quarter from the same height. Ignoring air resistance, which coin strikes the floor first? Explain why. My own answer.. is this right? "in ...
August 8, 2014
firstly write a program to accept the number of telephone calls made by a customer and the print out the rate in cents. secondly define a structure employee with name, category , salary, tax as a member. read the name category and salary of employee and calculate the tax as ...
July 8, 2014