Eliza solved a quadratic equation. Her work is shown below, with Step 2 missing.
What could Eliza have written as the result from Step 2?
(2 + 3)2 – 2 = 18
${z + 3)= 20
Step 1
Step 2
2 + 3 = 10
Step 3
I= -13 or 2 = 7 Step 4

Step 2: (z+3)=20/2

Step-by-step explanation:

Given Eliza's Work:

For Eliza to have obtained z+3 = 10 in step 3, she erroneously divided the right hand side of step 1 by 2. Therefore, what she wrote in her step 2

Step 2: (z+3)=20/2

However, the correct solution is:

Eliza could have written √(z + 3)² = √20 in Step 2

Step-by-step explanation:

For step 2, we have

Step 2: (z + 3) = 20/2

However, Eliza could have written from (z + 3)² - 2 = 18,

Step 1 (z + 3)² = 18 + 2 = 20

Adding  2 to both sides

Step 2: √(z + 3)² = √20

Finding the square root of both sides

Step 3: z + 3 = √20

Rationalizing the left hand side of the equation

Step 4: √20 - 3

Subtracting 3 from both sides

Therefore, the step missing in step 2 was the finding of the square root of both sides of the equation

Which was taken as the division of both sides by 2.

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation:

mean, 40.6

step-by-step explanation: