4. The shelf life of a photographic film is of interest to the manufacturer. Assume that shelf life is normally distributed. The manufacturer observes the shelf life for the following 4 units chosen at random from the current production. . 108 134 124 116 (a) Find a 95% confidence interval for the average shelf life. (b) Assume the populaffon standard deviation of shelf life is 5 days. The manu- facturer observes other samples with 4 units each time, let s be the variance of the samples each time, find e such that P(s

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A: We have given an equation  y3+16y-2y2-32=0 yy2+16-2y2+16=0 y2+16y-2=0 y2+16=0 or y-2=0 y2=-16 or y=2…

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A: -3=4x-33

Q: x+ y+ z = -4 2x+ 4y+ 2z -x+ 8y- 3z - 16 %3D -32 %3D

A:

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A:

Q: 24 32 16

A:

Q: Solve for x without using a calculator

A:

Q: Solve for x. 3 6.

A: x = 4

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A:

Q: Solve. 9y-6(2y-14)=75

A:

Q: S x-6x

A:

Q: Solve for x. 3 11 2

A: Consider the following figure. In above figure AB+BC⋅BC=CD+DE⋅CD.....1

Q: Solve. P - 4, for A A W = A =

A: We have to find the value of A

Q: Find the value of the variable 15-Z=0

A: The given equation is 15-z=0.

Q: 4 + (In 8x)2 xp

A: Given,          ∫4+ln8x2xdx

Q: 14 28

A: Follow next step

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A: Solve for a

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A:

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A: We have to evaluate the value of

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Q: 18

A:

Q: Leª dx

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A:

Q: Le d 0,

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A: Consider the following system of linear equations: 0.3x+4.6y=1                               ......…

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Q: Solve for X.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.