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Slav-nsk [51]
3 years ago
15

A function is defined by f(x)=5(2-x). What is f(–1)?

Mathematics
1 answer:
liq [111]3 years ago
5 0
In the given function f(x) = 5(2-x), subst. -1 for x, obtaining f(-1) = 5(2-[-1])= 10.
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Marine fuel is a combination of gasoline and motor oil. The standard gasoline and oil mixture is about 98% gasoline and about 2%
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Answer:

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Step-by-step explanation:

If we have to use 6 gallons of gasoline this means that 98%= 6 gallons and 2% would be 6/98*2

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6              :    x

98        : 2

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Let the gasoline be represented by g and motor oil by m then for the standard oil the equation would be

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For break in oil

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6              :    x

96        : 4

Using the product rule

x= 6*4/96= 0.25 gallons of motor oil is required.

Let the gasoline be represented by g and motor oil by m then for the break oil the equation would be

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96% of the 4 gallons of the "break in" mixture is gasoline =  3.84 gallons of gasoline

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