Question

The rainfall in (mm) in a city in a particular week recorded is as follows: 4.9, 5.5, 25.6, 21.3, 0, 2.2 and 0 The range is _____. ​

Answer 1

Answer:

578

Step-by-step explanation:

ANSWER EXPLANATION: There are two ways to solve this question. The faster way is to multiply each side of the given equation by ax−2 (so you can get rid of the fraction). When you multiply each side by ax−2, you should have:

24x2+25x−47=(−8x−3)(ax−2)−53

You should then multiply (−8x−3) and (ax−2) using FOIL.

24x2+25x−47=−8ax2−3ax+16x+6−53

Then, reduce on the right side of the equation

24x2+25x−47=−8ax2−3ax+16x−47

578

Since the coefficients of the x2-term have to be equal on both sides of the equation, −8a=24, or a=−3.

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Answer 2

Answer:

25.6

Step-by-step explanation:

range =highest observation- lowest observation

range =25.6-0

range =25.6

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