A study of the properties of metal plate-connected trusses used for roof support yielded the following observations on axial stiffness index (kips/in.) for plate lengths 4, 6, 8, 10, and 12 in. 4: 328.7 409.5 311.0 326.5 316.8 349.8 309.7
6: 336.8 347.2 361.0 404.5 331.0 348.9 381.7
8: 375.5 366.2 351.0 357.1 409.9 367.3 382.0
10: 419.7 452.9 461.4 433.1 410.6 384.2 362.6
12: 407.2 441.8 419.9 410.7 473.4 441.2 465.8
Does variation in plate length have any effect on true average axial stiffness? State and test the relevant hypotheses using analysis of variance with α = .01. Display your results in an ANOVA table. (Round answers to whole numbers and F to 2 decimal places)
Source Df SS MS F
Treatments
Error
Total

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

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step-by-step explanation:

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step-by-step explanation:

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