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Lucina

Questions and answers by visitors named Lucina

Questions (87)

The rotating spotlight from the Coast Guard ship can illuminate up to a distance of 250 m. An observer on the shore is 500 m
1. 4 answers
2. 1,712 views
In a marathon race, one runner is moving at 5.0 m/s passes a second runner moving at 4.5. What is the distance between the
1. 5 answers
2. 1,990 views
In to Kill A Mockingbird, what happened to Dill's father? At the beginning Dill mentions he didn't have a father but when Scout
1. 5 answers
2. asked by Lucina
3. 4,497 views
Each second after shut-off, the speed of the blade is 2/3 of the speed in the previous second. After the first 8 s, the saw has
1. 4 answers
2. 771 views
What does N70 degrees E mean?Thank you
1. 4 answers
2. 2,396 views
Hello!A falling piano reaches a velocity of 120 km/h. Find the kinetic energy if the mass of the piano is 357 kg. Ek= 1/2mv^2
1. 2 answers
2. 550 views
Hi! Would one of you please check my work? Thanks! ( I used significant digits, by the way)A student throws a 5.00 kg steel shot
1. 7 answers
2. 607 views
1) On the construction site an electric crane is used to lift materials to the 10th floor. A 180 kW motor requires 2.0 minutes
1. 10 answers
2. 890 views
The Great Galaxy in Andromeda is about 2200000 light years from Earth. Light travels 5900000000000 miles in a year. How many
1. 4 answers
2. 1,292 views
(I skipped the lengthy work problem background as it is irrelevant)The number of bacteria needed to break down an oil spill is
1. 7 answers
2. 607 views
A fallen tree if lifted 2.75m.What is the work done?W=Fd
1. 4 answers
2. 527 views
Hi!I have a few tests coming up and I need some practice Physics worksheet/tests. I have already done the worksheets and
1. 2 answers
2. 639 views
What is the difference between scalar and vector quantities and what two methods are used to describe vectors?Answer: Scalar
1. 1 answer
2. 738 views
What is the purpose of Lord Capulet arranging Juliet's marriage to Paris so suddenly after Tybalt's death?It is obviously to
1. 1 answer
2. 664 views
Are these sentences correct?Il travaille sur mardi Ils dessinent un maison Elles travaillent mecredi Elles commencent les
1. 9 answers
2. 643 views
The circular area of the drum is (9x^2+30x+25)pi. What is the smallest diameter it can have?(9x^2+30x+25) (3x+15) (3x+15) 3(x+5)
1. 4 answers
2. 830 views
State whether the following equations are sometimes, always or never true.a) a^2-2ab-b^2= (a-b)^2, bis not equal to 0 b) a^2+
1. 3 answers
2. 591 views
Find the radius of a cylinder with a volume of 393.3 cm^3 and a height of 3cmV = pi*r^2*h 393.3 = pi*r^2*h 41.75 cm = r^2 6.5 cm
1. 3 answers
2. 480 views
Are SI measurements always larger than Imperial measurements?
1. 3 answers
2. 452 views
A hand drum has a diameter of 14 7/8 inches and is 3 in deep. What is the amount of hide needed if the hide only covers top and
1. 4 answers
2. 634 views
I realize I'll get a reply in the morning so...A squash ball must have a diameter either 0.5 mm either above or below 40 mm. a)
1. 3 answers
2. 547 views
( I have to do either a creative or personal response to a visual. I have chosen to do a personal response in the form of an
1. 3 answers
2. 657 views
If I have an 85% in a course, what mark would I need to raise to an 89+ if my final is worth 25% of the whole course?
1. 4 answers
2. 396 views
Hello,I am practicing personal responses to text, the poem I'm responding is called "When I was one-and twenty" by A.E.Housen.
1. 5 answers
2. 750 views
Bonjour!Are the following examples les adjectifs de nationalite? 1. en + pays feminin --> Exemple: en Chine 2. au + pay masculin
1. 9 answers
2. 578 views
Can someone please tell me what to expect from Beginner High School chemistry? Is it mostly applying mathematics like physics?
1. 7 answers
2. 981 views
Hello!Explain why the primary trigonometric ratios depend only on the given angle and not the size of legs and hypotenuse of a
1. 4 answers
2. 5,786 views
A old Chevy accelerates at a rate of 3.8 m/s^2. How much time would it take to reach the speed limit of 100 km if the car was
1. 6 answers
2. 527 views
A 50 g lunch pail is lifted up 500 m. If the work required to do this was 1450 J, what's the acceleration?W= mad 1450 = (0.05
1. 3 answers
2. 523 views
Determine the missing value.a) Output value/Efficiency: 100 J Efficiency: 100% Input E = ??? b) Input: 100 J Efficiency: 30%
1. 3 answers
2. 664 views
Is xylem or phloem larger in a plant?My answer is xylem is larger in a plant than phloem.
1. 1 answer
2. 712 views
Negating air resistance, a block weighing 1.0 kg will fall _________ a 3.0 kg blockAnswer: The same rate as
1. 2 answers
2. 477 views
Write the simplified form of the expression. {q^-2/3} {q^1/3}--------------- q^4/3 Using positive exponents.
1. 2 answers
2. 534 views
What is the domain and range of the relation y = 2(x-5)^2 + 8? Express in set notation.---------------------------------------
1. 2 answers
2. 612 views
Bonjour!1. Can you tell me if I wrote this in passé compose correctly? I'd also appreciate an explain as to when you should use
1. 5 answers
2. 705 views
Solve this system of linear equations.* Used the substitution method 3x - y = 8 4x - y = -15
1. 5 answers
2. 1,421 views
* Note to Sra: I saw your replies to my previous post. They were very useful! I am posting a new question as the questions are a
1. 5 answers
2. 774 views
Factor 3x^3 + 9x^2 - 3x - 93x^3 + 9x^2 - 3x - 9 3 (x^3 + 3x^2- x - 3) 3 ( x+3x^2) ( -x - 3) 3 {x( 1 + 3x) -1 (x -1) This is a
1. 5 answers
2. 505 views
Does anyone know a website or a book where I have some General Cognitive Ability Tests/ Standardized Exams for free? The sites I
1. 4 answers
2. 540 views
Are these two the same? Which one of those is the correct form?Sn = n ---[3n-1] 2 Sn = 3n^2 +n ------- 2
1. 1 answer
2. 437 views
Hello,Consider a geometric sequence with t3= 18 and t7= 1458. Are there one or two values for the common ratio? How does this
1. 3 answers
2. 737 views
If r = 1, will a sequence be convergent or divergent?
1. 3 answers
2. 453 views
Can someone please explain to me what was John Dalton's experiment that led to his atomic theory? I know it's the electrolysis
1. 4 answers
2. 4,798 views
Are halogens and non-metals metal or non-metals?I think they're both non-metals
1. 5 answers
2. 1,847 views
Q.Determine the sum of each infinite geometric series.t_1= 8 r = -2^1/2 ---------------------------------------- A.This is a
1. 4 answers
2. 856 views
Find the first two terms of a geometric sequence if t_3+ t_4 = 50 and t_4 + t_5 =100?t3= a(r^2) t4= a(r^3) t5= a(r^4) a(r^2)+
1. 4 answers
2. 378 views
An angle in standard position such that sinÈ = 5/13. Determine the possible values of È, to the nearest degree.Answer: I got
1. 5 answers
2. 928 views
The point P(k, 24) is 25 units from the origin. If P lies on the terminal arm of an angle, theta, in standard position, 0 <
1. 5 answers
2. 591 views
An 8-m boom is used to move a bundle of piping from point A to point B. Determine the exact vertical displacement of the of the
1. 3 answers
2. 1,055 views
The Bermuda Triangle is an unmarked area in the Atlantic Ocean where there have been reports of unexplained disappearances of
1. 2 answers
2. 718 views
Three oil platforms, Alpha, Beta and Gammaare situated in the North Sea.Beta is 12 km from Alpha and is on a bearing of 145
1. 3 answers
2. 903 views
Water is spraying from a nozzle in a fountain forming a parabolic path. The nozzle is 10 cm above the service of the water. The
1. 4 answers
2. 1,692 views
Determine a quadratic function in vertex form given each set of characteristics.* minimum value of -24 and x-intercepts at -21
1. 2 answers
2. 1,023 views
There are 3 airports, A , E and G. G is 200km from A.E is 160 km from A From G the bearing of A is 052 degrees. From A the
1. 3 answers
2. 524 views
One walker was sponsored$100 plus $5 for the first kilometre, $10 for the second kilometre, $15 for the third kilometre, and so
1. 3 answers
2. 577 views
How many parameters in a quadratic function in a vertex form change when you change the location of the vertex?( P and Q change?
1. 3 answers
2. 495 views
1. A projectile is fired straight up from a height of 6 feet. Its height (h) in feet after t seconds is given by h = 6 + 192t
1. 4 answers
2. 1,824 views
Determine a quadratic function with this set of characteristics.x-intercepts of 2 and 7 and maximum value of 25 ( How would I
1. 3 answers
2. 1,193 views
Rewrite each quadratic equation in the form ax^2+bx+c=0. Then,use technology to solve each by graphing. ROund you answers to the
1. 4 answers
2. 1,505 views
Hello! I have to write an essay a critical paragraph/essay tommorrow on the following topic:In the first half of the novel, the
1. 6 answers
2. 918 views
Solve. Express your answer as exact roots.(s+6)^2 = 3/4 Sq root (s+6)^2 = +-sq root 3/4 (s+6) = sq root 3/ 2 s = -6 +- sq root 3
1. 3 answers
2. 545 views
Solve 0 = 3x^2 + 5x -1 by completing the square. Express your answer as exact roots.3(x^2 + 5/3 + 25/36) = -1 (x+ 5/6)^2 = 37/36
1. 5 answers
2. 944 views
Convert from standard to vertex form:(x+5)(x+4) x^2+ 9x + 20 (x+3)^2 + 20 - 9 (x+3)^2 + 11 <------
1. 5 answers
2. 584 views
Can someone please help me with this problem.. I don't get it!Solve (sqrt 5r - 9)-3 = sqrt(r+4)-2
1. 1 answer
2. 447 views
Have I converted correctly from standard form to vertex form?y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks
1. 3 answers
2. 651 views
The equation H(t) = 30 + 24t - 6t^2 describes the height of a ball at any time t. What's the height of the ball after two
1. 3 answers
2. 625 views
Please tell me what I'm doing wrong...The side lengths of tops of three squares tables can be described as three consecutive
1. 2 answers
2. 1,129 views
A sailboat in a lake travels 4 km due north and then 4 km due west. From there, the boat travels 5 km due north and 4 km due
1. 4 answers
2. 1,069 views
Can someone please check if I have written and balanced the reaction properly?1.In 1774 Joesph Priestley discovered oxygen by
1. 3 answers
2. 581 views
Can the following be reduced any further?14x^2/56y^3 I did not reduce because there were different variables in the numerator
1. 6 answers
2. 515 views
Simplify the rational expression and then add or subtract. Express answers in simplest form and identify all non-permissible
1. 3 answers
2. 732 views
Two hoses together fill a pool in 2 h. If only hose A is used, the pool fills in 3 h. How long would it take to fill the pool if
1. 3 answers
2. 1,067 views
Evaluate.1-|200+||-2|(-5)^3|| I get 49 as an answer
1. 3 answers
2. 468 views
Remplacez les tirets par le, la , l' ou les1. Georges? Il LE aime beaucoup 2. Les oeuf frais? On LES vend au marche 3. Mes
1. 5 answers
2. 657 views
In the novel, To Kill a Mockingbird by Harper Lee, a major character, Jem's view on the world shifts drastically due to his
1. 6 answers
2. 681 views
Why does |7 + 3x| = x -1 have no solution? I could plug in, for example 5, and the answer would be positive.Thank you =)
1. 3 answers
2. 413 views
I want to find the invariant points( points that are fixed) algrebraically of x^2 - 25 and its reciprocal. Would I set up my
1. 2 answers
2. 660 views
Bonjour!Have I written the following sentences correctly? 1. J'adore le pasta. Je le mangeions chaque semaine ( I like pasta. I
1. 3 answers
2. 606 views
Bonjour Sra!I was unable to reply to your answer over the past few days. I finally had the chance to check this out today. I had
1. 6 answers
2. 668 views
Hello! Does Jiskha have Earth Science tutors? If not, could someone direct me to a site where I could ask for help? My questions
1. 2 answers
2. 499 views
Bonjour! Are these sentences grammatically correct?1. J’étais trés réservée. C’était une bonne chose, parce que je
1. 7 answers
2. 697 views
Hello!For critical essays analyzing literature, is it better to analyze one text or can it done with more than one text? Thank
1. 1 answer
2. 475 views
What is the average velocity of a dropped brick that falls 4.0 m?vi = 4.0 m/s vf = 0 m/s a = 9.81 m/s^2 t = vf-vi / a t =
1. 2 answers
2. 634 views
Hello! I am having trouble figuring out the answer for this question:A 60 kg water skier is being pulled behind a boat. If the
1. 1 answer
2. 456 views
Canadian geese move up and down on the surface of a lake. If one moves up and down 15 times a minute and you estimate the
1. 1 answer
2. 424 views
According to this quote, what was the main objective of the South during the specified time period?
1. 2 answers
2. 27,811 views
1. What was one impact of the Iranian Revolution on the United States? (1 point)higher oil prices increased terrorism increased
1. 6 answers
2. 2,263 views

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