Answer:
x = 13.9
Step-by-step explanation:
With respect to the angle shown, we have the hypotenuse (the side opposite the 90 degree angle) and we have the adjacent side (which is the side labeled x). thus we can use the ratio "cosine" to solve this.
<em>The ratio of cosine is defined as:</em>
Where adjacent and hypotenuse are the respective sides and 
is the angle
<em>Thus, we can now write:</em>
The first answer choice is right, x = 13.9
Answer:
x = 5
Step-by-step explanation:
Given
8 = 
Multiply both sides by 3 to clear the fraction
24 = 5x - 1 ( add 1 to both sides )
25 = 5x ( divide both sides by 5 )
x = 5
How many four element subsets of \{1, 2, 3, 4, 5, 6, 7\}{1,2,3,4,5,6,7} have 11 as an element but do not have 77 as an element
levacccp [35]
If we fix 1 to be an element of a subset of size 4, then we can choose from 5 other elements (2, 3, 4, 5, and 6) to fill the other 3 spots in the subset. So there are
such subsets.
I don’t understand the question so I answer in two ways
