What 5 degrees is equal to

<5 = 105

Step-by-step explanation:

<4 = 105

Because l and m are parallel, <4 and <7 are supplementary (they = 180) That means you can find <7

<4 + <7 = 180

105 + <7 = 180                   Subtract 105 from both sides

<7 = 180 - 105                    Combine the right side

<7 = 75

<5 and <7 are also supplementary because they have their bases on line m

<5 + <7 = 180

<5 + 75 = 180                       Subtract 75 from both sides

<5 = 180 - 75

<5 = 105

You should understand that all 8 angles are either 75 degrees (<2,3,6,7) or 105 degrees (<1,<4,<5,<8)

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1