Question

The mean of 50 observations was 180. It was observed that the value 170 was wrongly copied as 140. Find the correct mean

Answer 1

Answer:

Determinant

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FIRST-DEGREE EQUATIONS AND INEQUALITIES

In this chapter, we will develop certain techniques that help solve problems stated in words. These techniques involve rewriting problems in the form of symbols. For example, the stated problem

"Find a number which, when added to 3, yields 7"

may be written as:

3 + ? = 7, 3 + n = 7, 3 + x = 1

Step-by-step explanation:

Answer 2

Answer:

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