Tutor profile: Savanna S.
What is the value of (-3)^3 + (-4)^2?
You must first understand that if a negative number is raised to a positive exponent, it will become positive. If a number is raised to a negative number than it will remain negative. So, (-3)^3 will become -27, while (-4)^2 will become 16 -27+16=-11
Subject: Civil Engineering
If a regular beam has is pin connected on one end and roller connected on another end, how many unknowns must be found to determine if it is statically present?
A pin has forces both in the X and Y directions, so there would be 2 unknowns. A roller only has a force acting in the Y direction, so there would only be 1 unknown.
The yearly fee for parking spots in the university parking lot at 5 different universities are: $310, $340, $380, $375, & $310, respectively. What is the mean of these yearly fees?
In order to answer this question you must find the average of these values. Perform the following steps to find the average: 1) add all yearly fees together to find the sum of the values 310+340+380+375+310=1715 2) take total sum and then divide it by the number of university fees 1715/5=343 $343 is the average fee.
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