12) The probability that a house in an urban area will develop a leak is 5%. If 20 houses are randomly selected, what is the mean of the number of houses that developed leaks? (Special formula) A) 0.5 B) 1.5 C) 1 D) 2 13) A quiz consists of 620 true or false questions. If the student guesses on each question, what is the standard deviation of the number of correct answers, approximatelly? (Special formula) A) 17.6068169 C) 12.4498996 B) 2 D) 0

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A: abcd = (a*d) - (c*b)

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A: this is matrix question  apply matrix subtraction operation, you get result

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A: Consider the given rational expression:Factorizing the numerator and denominator and then cancelling…

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Q: 7. Use your graph to estimate how the scale factor changes between a box with volume of 1 cubic foot…

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Q: Graphs of Rational Functions Determine the rational equation for each graph shown, beginning with y…

A: Given Starting function is y=1x     Translation theory- 1. If graph is shifted towards right by p…

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A: From the given basis we find an orthogonal basis of W. Using Gram-Schmidt process:

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A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

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A: Please see the below picture for detailed solution.

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A: First of all we will use the algebraic identity for the square of a sum and then we will rationalise…

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A: Given, To plot (5,5π3) and (2,-5π4)

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Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.