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In each of the next set of problems, assume that the data can be modeled bya straight line and that the trend continues indefinitely. Use two data points tofind such a line and then estimate the requested quantities. (See Example1.)
Tax Returns The approximate number (in millions) of individualelectronically filed tax returns filed with the Internal Revenue Service(IRS) in the year 2005 was 68.5, and it was 123.7 in 2016. Let [&x=5&]correspond to the year 2005, and estimate the number of electronicallyfiled returns in 2010 and 2014. Hint: Round slope to two decimalplaces. (Data from: U.S.Internal Revenue Service.)
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- Question Given the following piecewise function, evaluate lim →1− f(x). Select the correct answer below: ○ 1 ○ 4 -4 The limit does not exist. -2x² - 2x x 1arrow_forwardSolve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution. Remember that: A matrix is in row echelon form if Any row that consists only of zeros is at the bottom of the matrix. The first non-zero entry in each other row is 1. This entry is called aleading 1. The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.arrow_forwardSolve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution. Remember that: A matrix is in row echelon form if Any row that consists only of zeros is at the bottom of the matrix. The first non-zero entry in each other row is 1. This entry is called aleading 1. The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.arrow_forward
- Actividades: malemática (Erigonometria) Razones trigonometrica 2025 23 Jures Encuentra las seis razones of trigonométricas, on los siguienter tiringher rectangulies 4 A C =7 b=8cm. * c C=82m a=? * C * B A 4A=- 4 B= C=12cm B 9=7 C A b=6um B a=6cm Sen&c=- AnxB=- Sen&A = Anx = - Bos *A= - cos &c= Zang KA= Tong&c= ctg & A= — ctg &c= Séc & A = - Cosc&A= Secxce csck(= cos & C = - cos & B= Tong & C = — tang & B = d=g&c= cfg &c=— cg & B= sec &C= secxB=- оскв=- =_csCKB = 6=5m AnxA = - AnxB= cos * A= - cos &b= Tmg & A = - Tong & B=- ct₁ A = - C√ B=- cfg & Soc *A= Sec & B=- ACA=- CAC & B=- FORMATarrow_forwardPRIMERA EVALUACIÓN SUMATIVA 10. Determina la medida de los ángulos in- teriores coloreados en cada poligono. ⚫ Octágono regular A 11. Calcula es número de lados qu poligono regular, si la medida quiera de sus ángulos internos • a=156° A= (-2x+80 2 156 180- 360 0 = 24-360 360=24° • a = 162° 1620-180-360 6=18-360 360=19 2=360= 18 12. Calcula las medida ternos del cuadrilá B X+5 x+10 A X+X+ Sx+6 5x=3 x=30 0 лаб • Cuadrilátero 120° 110° • α = 166° 40' 200=180-360 0 = 26-360 360=20 ひ=360 20 18 J 60° ⚫a=169° 42' 51.43" 169.4143180-340 0 = 10.29 54-360 360 10.2857 2=360 10.2857 @Saarrow_forward(4) (8 points) (a) (2 points) Write down a normal vector n for the plane P given by the equation x+2y+z+4=0. (b) (4 points) Find two vectors v, w in the plane P that are not parallel. (c) (2 points) Using your answers to part (b), write down a parametrization r: R² — R3 of the plane P.arrow_forward
- (2) (8 points) Determine normal vectors for the planes given by the equations x-y+2z = 3 and 2x + z = 3. Then determine a parametrization of the intersection line of the two planes.arrow_forward(3) (6 points) (a) (4 points) Find all vectors u in the yz-plane that have magnitude [u also are at a 45° angle with the vector j = (0, 1,0). = 1 and (b) (2 points) Using the vector u from part (a) that is counterclockwise to j, find an equation of the plane through (0,0,0) that has u as its normal.arrow_forward(1) (4 points) Give a parametrization c: R R³ of the line through the points P = (1,0,-1) and Q = (-2, 0, 1).arrow_forward
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