Answer: 
Step-by-step explanation:
By the Pythagorean theorem, the unknown side has length
Therefore,
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Answer:
.79
Step-by-step explanation:
You multiply 1.89×2 to get 3.18. Then you subtract 3.78 by 2.99 and get .79
There's is one gallon of gas left in the tank or gas can
The product of all the values of a, such that f(a)=f(2a) is -1/2
<h3>Functions and expressions</h3>
Given the function below;
f(x)=1/x + x
f(a) = 1/a + a
f(2a) = 1/2a + 2a
If f(a) = f(2a), hence;
1/a + a = 1/2a + 2a
Collect the like terms
1/a - 1/2a = 2a - a
2-1/2a = a
1/2a = a
Cross multiply
2a² = 1
a² = 1/2
a = ±√1/2
The values of a are √1/2 and -√1/2
Product = -√1/2 * √1/2
Product = -1/2
Hence the product of all the values of a, such that f(a)=f(2a) is -1/2
Learn more on functions here: brainly.com/question/25638609
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