Shannon has three different recipes for chocolate chip cookies. if she wants to make 4 dozen cookies from batch a, she needs to use 2 cups of chocolate chips. if she wants to make 3 dozen cookies from batch b, she needs to use 3 cups of chocolate chips. if she wants to make 3 dozen cookies from batch c, she needs to use 1.5 cups of chocolate chips. calculate each unit rate and then select the true statements below.
batch c would use 6 cups of chocolate chips to make 12 dozen cookies.
batch b uses 1 cup of chocolate chips per 1 dozen cookies.
batch c uses less cups of chocolate chips per dozen than batch a.
batch a and batch c have the same number of cups of chocolate chips per cookie.
batch a and batch b have the same number of cups of chocolate chips per cookie.
batch b uses less cups of chocolate chips per dozen than batch c.

{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

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

happy to

pls mark as brainliest.

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation: