The lengths of the rectangle have been measured to the nearest tenth of a metre. Work out the following, writing down all the figures on your calculator display:
the upper bound for the perimeter of the rectangle
the lower bound for the area of the rectangle
length - 15.8m
width - 5.2m

Perimeter (upper bound) =42.16 m

Area (lower bound)= 81.11 m2

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Since both measures were rounded to the nearest tenth, the possible numbers are:

Length (L) =15.8m ; (between 15.75 and 15.84)

Lower =15.75 ; upper = 15.84

Width (w) =5.2m (between 5.15 and 5.24)  

Lower = 5.15 ; upper = 5.24

Upper bound perimeter = 2 (15.84)+2(5.24) = 42.16 m

Lower bound for the area of the rectangle = 15.75 x 5.15 = 81.11 m2

Feel free to ask for more if needed or if you did not understand something.  

a. the residual plot for model 1 has a random pattern and is a good fit for the data.

80%

step-by-step explanation: