Answer:
67
Step-by-step explanation:
Mean is the average
Add up all the values and divide by the numbers there are.
In this case, divide by 9.
The number -108.8 is a rational number
<h3>How to determine if the number is rational?</h3>
The number is given as:
negative 108.8
Rewrite properly as:
-108.8
Rational number have terminating decimals, and they can be represented as fractions.
The fraction equivalent of -108.8 is -1088/10
Hence, the number -108.8 is a rational number
Read more about rational numbers at:
brainly.com/question/1535013
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Without taking out the cost that would be given to the author and publisher it would be $25,893, you just multiply 9.45 by 2,740
Answer: A. A=(1000-2w)*w B. 250 feet
C. 125 000 square feet
Step-by-step explanation:
The area of rectangular is A=l*w (1)
From another hand the length of the fence is 2*w+l=1000 (2)
L is not multiplied by 2, because the opposite side of the l is the barn,- we don't need in fence on that side.
Express l from (2):
l=1000-2w
Substitude l in (1) by 1000-2w
A=(1000-2w)*w (3) ( Part A. is done !)
Part B.
To find the width w (Wmax) that corresponds to max of area A we have to dind the roots of equation (1000-2w)w=0 ( we get it from (3))
w1=0 1000-2*w2=0
w2=500
Wmax= (w1+w2)/2=(0+500)/2=250 feet
The width that maximize area A is Wmax=250 feet
Part C. Using (3) and the value of Wmax=250 we can write the following:
A(Wmax)=250*(1000-2*250)=250*500=125 000 square feets
