Simplify each expression. 1) -7 + 3n^4 - 5 + 5n^2 + 5n^4 - 6n^3
A) 8n^4 - 6n^3 + 5n^2 - 12
B) 10n^4 - 6n^3 + 5n^2 - 11
C) 10n^4 - 6n^3 + 5n^2 - 12
D) 10n^4 - 6n^3 + 5n^2 -

2) 4n^2 - 2n^3 - 7n^2 + 6n - 7n^3 + 6n^4
A) 6n^4 - 9n^3 - 8n^2 + 6n
B) 6n^4 - 9n^3 - 8n^2 + 13n
C) 6n^4 - 9n^3 - n^2 + 13n
D) 6n^4 - 9n^3 - 3n^2 + 6n

google dat sis

step-by-step explanation:

{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

segment bisector

step-by-step explanation:

line segment bisector. definition: a line, ray or segment which cuts another line segment into two equal parts. try this drag one of the orange dots at a or b and note the the line ab always divides the line pq into two equal parts.

mark brainliest!

the correct answer is $7.38

step-by-step explanation: