 # Algebra 2 questions and answers

Recent questions in Algebra II Jaden Easton 2020-10-19 Answered

### Is the expression true: $$\displaystyle\frac{{{\cos{{\left(-\theta\right)}}}}}{{{1}+{\sin{{\left(-\theta\right)}}}}}={\sec{\theta}}+{\tan{\theta}}$$ Cheyanne Leigh 2020-10-19 Answered

### $$\displaystyle{\log{{\left({x}+{5}\right)}}}-{\log{{\left({x}-{3}\right)}}}={\log{{2}}}$$ Isa Trevino 2020-10-19 Answered

### Solve the Numercial Method Explain how Newton`s interpolation formula better tha the Lagrange formula Bevan Mcdonald 2020-10-19 Answered

### Given the following function: $$\displaystyle{f{{\left({x}\right)}}}={1.01}{e}^{{{4}{x}}}-{4.62}{e}^{{{3}{x}}}-{3.11}{e}^{{{2}{x}}}+{12.2}{e}^{{{x}}}$$ a) Use three-digit rounding frithmetic, the assumption that $$\displaystyle{e}^{{{1.53}}}={4.62}$$, and the fact that $$\displaystyle{e}^{{{n}{x}}}={\left({e}^{{{x}}}\right)}^{{{n}}}$$ to evaluate $$\displaystyle{f{{\left({1.53}\right)}}}$$ b) Redo the same calculation by first rewriting the equation using the polynomial factoring technique c) Calculate the percentage relative errors in both part a) and b) to the true result $$\displaystyle{f{{\left({1.53}\right)}}}=-{7.60787}$$ emancipezN 2020-10-19 Answered

### Show all steps to solve the system of equations: y = 2x + 3 2x + 4y = -8 Elleanor Mckenzie 2020-10-18 Answered

### Tell whether the function represents exponential growth or decay. $$w(x)=0.72⋅2^x$$ Braxton Pugh 2020-10-18 Answered

### a) Evaluate the polynomial $$\displaystyle{y}={x}^{{3}}-{7}{x}^{{2}}+{8}{x}-{0.35}$$ at $$\displaystyle{x}={1.37}$$ . Use 3-digit arithmetic with chopping. Evaluate the percent relative error. b) Repeat (a) but express y as $$\displaystyle{y}={\left({\left({x}-{7}\right)}{x}+{8}\right)}{x}-{0.35}$$ Evaluate the error and compare with part (a). Tabansi 2020-10-18 Answered

### Radicals and Exponents Simplify the expression. $$\displaystyle{\frac{{{x}^{{{4}}}{\left({3}{x}\right)}^{{{2}}}}}{{{x}^{{{3}}}}}}$$ nitraiddQ 2020-10-18 Answered

### Find a least squares solution of Ax=b by constructing and solving the normal equations. $$\displaystyle{A}={\left[\begin{array}{cc} {3}&{1}\\{1}&{1}\\{1}&{4}\end{array}\right]},{b}{\left[\begin{array}{c} {1}\\{1}\\{1}\end{array}\right]}$$ $$\displaystyle\overline{{{x}}}=$$? Ramsey 2020-10-18 Answered

### Use the method of substitution to solve the following system of equations. If the system is dependent, express the solution set in terms of one of the variables. Leave all fractional answers in fraction form. y=-11 x+2y=7 smileycellist2 2020-10-18 Answered

### What is the solution of a system of linear equations? Phoebe 2020-10-18 Answered

### For Questions $$1 - 2$$, use the following. Scooters are often used in European and Asian cities because of their ability to negotiate crowded city streets. The number of scooters (in thousands) sold each year in India can be approximated by the function $$N = 61.86t^2 — 237.43t + 943.51$$ where f is the number of years since 1990. 1. Find the vertical intercept. What is the practical meaning of the vertical intercept in this situation? 2. Use a numerical method to find the year when the number of scooters sold reaches 1 million. (Note that 1 million is 1,000 thousand, so $$N = 1000$$) Show three rows of the table you used to support your answer and write a clear answer to the problem. Line 2020-10-18 Answered

### Define (i) mathematical modelling (ii) numerical modeling Identify the clss of equation (i) $$2x + 3 = y , (ii)2x^3 + 2x + 3 = 0$$ (iii) $$2 sinx + sin x^2 = 1$$ nicekikah 2020-10-18 Answered

### Consider the sequence $$67, 63, 59, 55......$$ a. show that the sequence is arithmetic. b. find a formula for the general term Un. c. Find the 60th term of the sequence. d. Is -143 a member of the sequence? e. Is 85 a member of the sequence? he298c 2020-10-18 Answered

### Determine whether the given sequence is arithmetic. If so, then find the common difference. $$4, 9, 14, 19, 24,...$$ Lennie Carroll 2020-10-18 Answered

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