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marysya [2.9K]
3 years ago
5

Marlene brought a can of polyurethane varnish that was stored at 40°F into her shop, where the

Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

1 hour and 6 minutes

Step-by-step explanation:

  • A temperature difference of 58-40 = 18°F was obtained in 2 hours
  • A temperature difference of 68-40 = 28°F will be obtained in x hours

The next proportion must be satisfied:

18 °F / 28 °F = 2 hours / x hours

x = 2*28/18

x = 3.1 hours in total

Given that she has already waited 2 hours, she must wait 3.1 - 2 = 1.1 extra hours. 1 hour is equivalent to 60 minutes, then 0.1 hours is equivalent to 0.1*60 = 6 minutes.

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GuDViN [60]

Answer:

-\frac{3}{7}

Step-by-step explanation:

The additive inverse of a number (its "opposite") is what you add to the given number to get a sum of zero.

\frac{3}{7} + (-\frac{3}{7}) =0

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3 years ago
What is the inverse of the function g ( x ) = − 3 ( x + 6 ) g(x)=−3(x+6)g, left parenthesis, x, right parenthesis, equals, minus
aleksley [76]

Answer:

Then inverse of the given equation is given by ,f^-1(x)=  (-x/3 - 6)

Step-by-step explanation:

Given:

Function as g(x)=-3(x+6).

To Find :

The inverse function of the g(x).

Solution:

We know that step involving to convert into inverse function as follows :

Further ,

  1. Replace g(x) with function as  "y",

             hence it becomes ,

            y=-3(x+6)

     2.Then solve for the x value ,

        it becomes as ,

      \frac{-y}{3}=x+6,

    \frac{-y}{3}-6=x

     3. Replace x with y and y with x we get ,

   \frac{-x}{3}-6=y.

it is written as ,

y=f^-1(x)=  -x/3-6

Then inverse of the given equation is given by ,f^-1(x)=  -x/3-6.

   

7 0
4 years ago
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