Nth term - Study guides, Revision notes & Summaries

formula of an arithmetic series - ANS-- Sn = n/2 (2a + (n-1)d) - Sn = n/2 (a + l) where a is the first term and l is the last term what is an arithmetic series - ANS-the sum of the terms of an arithmetic sequence nth term of an arithmetic sequence - ANS-- Un = a + (n-1)d - a = the first term - d = the common difference nth term of a geometric sequence - ANS-- Un = ar^(n-1) - a = first term - r = common ratio formula of first n terms of a geometric sequence - ANS-- Sn = a(1-r^n) / 1-r -...

Speed (m/s) = frequency (Hz) x wavelength (m) Arithmetic series Sn = n x (first + last)/2 N= common difference Nth term of an arithmetic sequence (a+(n-1)d) Nth term of a geometric sequence sn = a1 (1-rn) / (1-rn) Area of a rectangle/parallelogram b x h Area of a triangle A=1/2bh Area of a trapezium 1/2 ( a + b) d Area of a circle A=πr² Circumference of a circle 2πr Volume of a cube V=s^3 Volume of any uniform prism area of cross section x length Volume of a ...

The type of research sampling that takes a sample from every nth subject, which can be determined by dividing the total population size by the desired sample size, is termed: A. Random B. Convenience C. Judgment D. Systematic : Systematic A term used to describe an indigenous disease that is usually present in a particular area or region is: A. Epidemic B. Endemic C. Pandemic : Epidemic What is the only measure of central tendency that can be used when measuring nominal data?

AP Calculus BC Series test with Answers nth term test - Answer>> When n probably doesn't equal zero Divergent if the limit as n goes to infinity does NOT equal zero Does not determine convergence Geometric series test - Answer>> Something is multiplied over and over The series of (r)^n converges if |r|<1 and diverges if |r|>1 or |r|=1

GCSE Mathematics Edexcel Predicted Paper 2023 Higher Paper 2 with correct marking scheme Name ……………………………………………… Date ……………………………………………… 1 hour 30 minutes allowed Calculator Paper Maximum Mark: 80 Grade boundaries These are VERY rough guesses! Getting a 7 on this paper does not guarantee you the same mark in the exam. • 9 70 • 8 60 • 7 50 • 6 40 • 5 30 • 4 20 ...

Edexcel A Level Maths - Pure QUESTIONS AND ANSWERS 100% VERIFIED A+ GUARANTEED Cosine Rule - Know 2 sides, and the angle in between. You want the missing side. Cosine Rule - Know 3 sides. You want an angle. Sine Rule - Know 2 angles and a side. You want the missing side. Sine Rule - Know 2 sides and an angle. You want a missing angle. Midpoint of a line segment on a circle. Equation of a circle with centre (0,0) Equation of a circle with centre (a,b) Arithmetic nth Term Arithmetic Serie...

Which phrase or term regarding materiality is used by the Supreme Court of the United States and is not found in the FASB Concepts Statements No. 2? - Probably that the judgment of a reasonable person - Significantly altered the total mix of information available - Magnitude of an omission or misstatement - In light of surrounding circumstances Significantly altered the total mix of information available. Which materiality does an auditor use when determining whether the financial st...

Max/min Maximum value for division of bounds Min/max Minimum value for division of bouns That the power on both numbers is the same When adding and subtracting standard form numbers what do you need to ensure? dn + (a-d) Nth term formula The common difference what does d stand for in the nth term formula? The first term what does a stand for in the nth term formula? Surds or pie An 'exact answer' means include... (2) Work out the common d...

ACT Test 137 Questions with Verified Answers When are the next 3 ACT test dates for US and international students? - CORRECT ANSWER December 9, February 10, April 14 What is the order of the ACT sections? - CORRECT ANSWER English, Math, Reading, Science, Writing How many minutes and questions is the English section? - CORRECT ANSWER 75 questions, 45 minutes How many minutes and questions is the Math section? - CORRECT ANSWER 60 questions, 60 minutes How many minutes and questions ...

Edexcel A Level Maths – Pure 2023 With Verified and Elaborated Questions Cosine Rule - Know 2 sides, and the angle in between. You want the missing side. Correct Answer a² = b² + c² - 2bcCosA Cosine Rule - Know 3 sides. You want an angle. Correct Answer Cos A = (b² + c² - a²) ÷ 2bc Sine Rule - Know 2 angles and a side. You want the missing side. Correct Answer (a ÷ SinA) = (b ÷ SinB) = (c ÷ SinC) Sine Rule - Know 2 sides and an angle. You want a missing angle. Correct An...