7. There are three coins in a box. One is a two-headed coin, another is a fair coin, and the third is a biased coin that comes up heads 75 percent of the time. When one of the three coins is selected at random and flipped, it shows heads. What is the probability that it was the two-headed coin?

Q: What are four main functions of statistics?

A: Find: The four main functions of statistics.

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A:

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A: given that x+42-y=53 solve for y

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A:

Q: 1. 4x + 7 = 3x + 4 - x

A: To solve 4x+7=3x+4-x

Q: Solve. State your solution using interval notation. 4 3 x+6 x-1

A:

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A: Explanation: Given that: 4+2x3=-2 Concept: Cubing on both side 4+2x=(-2)3…

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A: I have used Bisection method to solve this

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A: Given equation,  (x - 6)2 - 3(x - 6) - 10 = 0 To solve for x.

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Q: 45x-4 = 64

A: equating powers  43=64

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A:

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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.