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nasty-shy [4]
3 years ago
7

what would the area of an actual pool be if the scale from the drawing is 3 :1000 ,? will.mark brainest show work ty

Mathematics
1 answer:
Daniel [21]3 years ago
7 0

Given the Scale of the Drawing as 3 : 1000

It means in the Drawing a Length of 3cm is Equal to 1000cm of the Actual Pool

It means in the Drawing a Length of 3cm is Equal to 10m of the Actual Pool

Given the Length of the Pool in the Drawing is 15cm

⇒ Actual Length of the Pool is 5 × 10m = 50m

Given the Width of the Pool in the Drawing is 7.5cm

⇒ Actual Width of the Pool is  2.5 × 10m = 25m

We know that Area of Rectangular Pool is Length × Width

⇒ Area of the Rectangular Pool = 50 × 25 = 1250m²

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This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y"  = -1.5x + 85.

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Interpretation of coefficient of determination R² = 0.3721

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Given the data in the question;

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the correlation coefficient r = -0.61

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