Numerade

Questions asked

BEST MATCH

Testamentary capacity generally requires that the testator: Be at least 25 years old Understands the nature of making a will and the general nature of their property and heirs Accurately predict future investment returns Have a law degree

View Answer

BEST MATCH

assume that z=f(x,y) is a continous function over the region R. assume a=10 and b=3 . express the double intrgal f9x,y) over R as an iterated intergal using polar coordinates

View Answer

BEST MATCH

"A The transaction motive increases as many individuals prefer to hold cash for everyday transactions and emergencies".

View Answer

BEST MATCH

2) (10 points) If the vertical velocity of a jumping jackal is given by h(t) = 15t - 4.9t$^2$ meters per second, compute the average velocity of the jackal over the time interval [1, 1.05] (in seconds), use units in your answers.

View Answer

BEST MATCH

Import the dataset `mtl.csv` and run a Point-Biserial Correlation between `sex` and the column `asubic`. This is the thickness of the subiculum subregion of the medial temporal lobe as measured by brain imaging. To do this you'll need to run this code after importing the dataset to generate a variable with 0 and 1, based on sex (assuming you bring in the dataset as `df`): `df\$sex1 <- ifelse(df\$sex=="M",1,0)` This will make males in the dataset a 1, and females in the dataset a 0. Answer all questions to 3 decimal places What is the t-statistic? What is the p-value? What is the correlation coefficient? Based on the results, is there a significant correlation between the variables? (Answer YES or NO).

View Answer

BEST MATCH

14. For the following reactions, identify the reducing agent, oxidizing agent, what is reduced, and what is oxidized: a. 2Hg$^{2+}$ + N$_2$H$_4$ ? 2Hg + N$_2$ + 4H$^+$ b. 2OH$^-$ + Zn + 2H$_2$O ? Zn(OH)$_4^{-2}$ + H$_2$ c. 2Na(s) + Cl$_2$(g) ? 2NaCl(s) d. CH$_4$ + 2O$_2$ ? CO$_2$ + 2H$_2$O

View Answer

BEST MATCH

Consider the 65kg block on the horizontal surface being pulled to the right. What is the net force if the block is accelerating at a rate of 3.5? Round your answer to the nearest whole number.

View Answer

BEST MATCH

Luigi's Pizza Emporium is considering whether to lease or purchase a new state-of-the-art wood-fired pizza oven from Italy. The cost of the pizza oven will be $275,000 and it has a useful life of 15 years. Luigi expects to retire in 10 years, at which time he believes he can sell the oven for $50,000. Luigi has contacted a local financial institution and they have agreed to lend Luigi the funds to purchase at a rate of 9% with annual payments amortized over eight years. Alternatively, Luigi could lease the equipment from the manufacturer with lease payments of $40,000 per year for 8 years. The first payment will be due immediately upon delivery of the equipment. If the equipment is purchased, the vendor will perform annual maintenance on the oven at a cost of $3,000 per year. Luigi's Pizza has a cost of capital of 12% and a tax rate of 30%. Pizza ovens have a CCA rate of 25%.

View Answer

BEST MATCH

In 2007, the exchange rate between the Rand and the British pound was R14.13 to 1£. The Rand/US dollar exchange rate was R7.06 to 1$. Estimate the exchange rate between the US dollar and the British pound.

View Answer

BEST MATCH

Chris wants to study an organometal complex that was synthesized as shown below. Cr$^{3+}$$_{(aq)}$ + 2salen$_{(aq)}$ = Cr(salen)$_2^{3+}$$_{(aq)}$ He first prepared the working standards by adding specific volumes of Cr$^{3+}$ solution and added 5.00 ml of 0.500M salen and diluted the solutions to 32.0 ml. The absorbance of each standard was then measured at the $\lambda_{max}$, 425 nm, using a UV-Vis spectrophotometer as shown in the table below Table 1. Standardized solutions containing Cr(salen)$_2^{3+}$. Concentration (M) Absorbance Blank 0.021 0.010 0.220 0.015 0.295 0.020 0.356 0.025 0.421 0.030 0.473 He then prepared an unknown solution by mixing 1.00-mL of 0.500 M Cr$^{3+}$ with 2.00-mL of 0.500 M salen and diluting to 32.0 mL. The resulting mixture was found to have an absorbance of 0.285. A blank solution was run before analyzing the unknown and gave an absorbance of 0.015. A. Determine the best fit line (with r$^2$) of the calibration curve. B. Calculate the equilibrium concentration (mM) of Cr$^{3+}$ in the sample. C. Calculate the equilibrium concentration (mM) of salen in the sample. D. Determine the K$_{eq}$ of Cr(salen)$_2^{3+}$ E. What is the color of the complex?

View Answer

tammy p.