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josefina brown

josefina b.

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A regression line fitted between volume of sales and the advertising budget; the equation is Sales = 7500+6.95*budget. If the budget increased by $30000 this year compared to the last year, what is the expected change in sales? Group of answer choices Sales are expected to increase by $208,500 Sales are expected to increase by $30,000 Sales are expected to increase by 6.95 times Sales are expected to increase by $216,000

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Problem #4: Consider the following matrix: $A = \begin{bmatrix} 1 & -2 \\ 2 & 1 \end{bmatrix}$ (a) Review §8.7 of the text. (b) Find all of the eigenvalues of A. (c) Find the eigenvectors corresponding to the eigenvalues you found in (b). [Caution: The eigenvalues and eigenvectors are complex here! This is an important case in upcoming problems in Chapter 10.]

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Show that the bisection method can be used to obtain the zeros of $f(x) = \sqrt{x} - cos(x)$ in [0, 1]. Find the number of iterations necessary to find the solution accurate up to five decimal places. a) Implement the bisection method in MATLAB to approximate the zeros of $f(x)$. Accept $f(x)$ as an anonymous function using @(x), the initial interval $[a_0, b_0]$, and a bound for the error to produce an approximation. b) Use the bisection method to find $\sqrt{5}$ accurate to within $10^{-6}$.

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Which month had the highest unit sales thus far for 2021? February April May June Which of the following describes the trend for ingredient cost through the year? ingredient cost gradually increased throughout the year Ingredient cost gradually decreased throughout the year. Ingredient cost remained constant through the year. Ingredient cost randomly changed through the year Which type of expense accounts for the largest cost to produce its products ? Ingredients Packaging Labor All costs are equal . What was the highest , unfavorable labor cost percentage variance thus far for 2021 ? 113.8% 111.4% 90.7 % 120.8 % Overall , which statement best describes the labor cost variances for the first six months of the year for Honey Bee Company ? Labor cost variances were mostly favorable , with only one month experiencing an unfavorable labor cost variance . The company's expectation that labor cost would decline the longer the factory is open appears to be mostly true in

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What are the advantages and disadvantages of different types of bearings in mechanical systems?

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NFLX NETFLIX, INC. Nasdaq Stock Market \( 610.52_{\text {uso }}^{\text {o }}-3.00(-0.49 \%) \) - MARKET CLOSED (AS OF 18:59 UTC-5) \begin{tabular}{llll} ?ly 17 & 14.70 & \( 263.113 B \) & 42.57 \\ COMING EARNINGS & EPS & MARKET CAP & P/E \end{tabular}

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θ = π/5, opposite length is 108 Find the length of the side adjacent to the given angle

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1. Find $(f^{-1})'(a)$ where $f(x) = 3 + x^2 + \tan\left(\frac{\pi x}{2}\right)$, $a = 3$.

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Select all of the following that describe $\sqrt{j}$ in polar form $e^{j(\frac{\pi}{2})}$, $n$ integer $e^{j(\frac{\pi}{4})}$ None of these answers describe $\sqrt{j}$ $e^{j(\frac{\pi}{4} + \pi n)}$, $n$ integer $e^{j(\frac{\pi}{2} + 2\pi n)}$, $n$ integer

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2. E-bikes are becoming a more common solution to those tiresome uphill climbs on your bicycle. Versions of this concept have existed for years including an add-on solution of a friction drive on the tire. M Fd The major force on the motor is due to the drive force ($F_d$). The motor casing constrains the shaft with two bearings that allow the shaft to freely rotate. The torque produced by the motor ($T_r$) is driving the bike at constant speed. The dimensions for this shaft are shown below. D=22mm r=2mm (fillet) d=20mm $T_R$ F = 450 N D$_w$ = 50 mm 30mm 35mm 35mm 1. Calculate the reaction forces and draw the shear, moment and torsion diagrams for the shaft in the x-y plane. 2. What two (2) locations on the cross section do you expect to have the maximum stress? 3. Draw differential elements for the two locations from the previous question and calculate the normal and shear stresses on each element. 4. What are the principal stresses and the maximum shear stress ($\tau_{max}$) for that state of stress?

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