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forsale [732]
3 years ago
6

What is the answer to the question 0.4 times 100

Mathematics
2 answers:
Lunna [17]3 years ago
8 0
The answer is forty move the decimel by teo places
spin [16.1K]3 years ago
3 0
0.4 x 100 = 40

Just count the number of zeros in 100 (there are 2) and move the decimal point in 0.4 that many times over to the right. It will equal 40.
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Answer:  800 feet²

Step-by-step explanation:

Lets remove the brackets from the function's expression

A(x) = -2x²+80x

So we got the quadratic function and we have to find the x that corresponds to function's maximum. Let it be X max

As we know Xmax= (X1+X2)/2 , where X1 and X2 are the roots of the function A(x)

Lets find X1 and X2

x(80-2x)=0

x1=0   80-2*X2=0

x2=40

So Xmax= (0+40)/2=20

So Amax= A(20)= 20*(80-2*20)=20*40=800 feet²

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2 years ago
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3 years ago
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