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Savanna S.
Civil & Structural Engineering Tutor with over 8 years of AutoCAD Experience!
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Question:

What is the value of (-3)^3 + (-4)^2?

Savanna S.
Answer:

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

Civil Engineering
TutorMe
Question:

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?

Savanna S.
Answer:

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.

ACT
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Question:

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?

Savanna S.
Answer:

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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