Erica solved the equation -5x - 25 = 78; her work is shown below. Identify the error and where it was made. -5x - 25 = 78
Step 1: -5x - 25 - 25 = 78 - 25
Step 2: -5x = 53
5x 53
Step 3:
--5
-5
Step 4: x =
53
5
Step 1: She should have added 25 to each side.
Step 1: She should have divided both sides by -5.
Step 3: She should have divided both sides by -5.
Step 3: She should have multiplied both sides by -5.
Previous Question
Question 1 (Not Answered)
Next Question
Sign out
US

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation:

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.

{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

step-by-step explanation: