Answer:

Step-by-step explanation:
we know that
In the right triangle ABC
The function sine of angle 68 degrees is equal to divide the opposite side SB by the hypotenuse AC
so

substitute the values and solve for AC



Answer:
The axis of symmetry is 
Step-by-step explanation:
we know that
In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex
In this problem we have a vertical parabola open upward
The x-coordinate of the vertex is equal to the midpoint between the zeros of the parabola
so

therefore
The axis of symmetry is 
The first one I think not sure
Hey there!
To solve this, divide the numbers 1/4 and 5 . . .
1/4 = 1/4
5 = 5/1
1 x 1 = 1
4 x 5 = 20
= 1/20
1/20 is already in it's simplest form, so it doesn't need to be simplified.
There are 1/20 liters of water in each glass.
Hope this helps you.
Have a great day!
Answer:
As there is one math problem over there.
Lets see the question first:
It says that "A hair dryer is rated
,if you use the dryer for
.How much electric energy do you use ?"
Final answer = Electic energy 
Step-by-step explanation:
Electrical Energy
.
The total amount of electrical energy used depends on the total power used by the electrical device and the total time they are used for.
So we have been given the power of the hair dryer 
Now the time it has been use for 
To calculate electric energy we will multiply both the terms.
Electric energy 
So electric energy used for the hairdryer is =