Answer:
(328i + 82) / 17
Step-by-step explanation:
`(2i(4+5i)(4-5i))/(4+i)
= (2i(16 - 25i^2)) / (4 + i)
= (2i( 16 + 25) )) / (4 + 1) [Note:- i^2 = -1]
= 82i / (4 + i)
= 82i(4 - i) / (4 + i)(4 - 1)
= 328i + 82 / (16 - i^2)
= (328i + 82) / 17
Answer:
(0, 1/3, 2/3, 1, 1 1/3, 1 2/3, 2)
Step-by-step explanation:
Given :. Length of row = yards
Spacing = 1/3 yard
Startibg point = 0
0 ;
0+1/3 = 1/3
1/3 + 1/3 = 2/3
2/3 + 1/3 = 2/3 = 1
1 + 1/3 = 1 1/3
1 1/3 + 1/3 = 1 2/3
1 2/3 + 1/3
(0, 1/3, 2/3, 1, 1 1/3, 1 2/3, 2)
We have the following equation:
x2 + 4x = - (y2 - 20)
Let's review step by step:
step 1:
x2 + 4x = -y2 + 20
Answer: OK
step 2:
x2 + 4x + 4 = -y2 + 20 - 4
Answer: Wrong
The correct step is:
x2 + 4x - 4 = -y2 + 20 - 4
Or equivalently:
x2 + 4x + 4 = -y2 + 20 + 4
Answer:
he did make an error in his work in step 2
Answer:
Step-by-step explanation:
<u>Using mental math to find the slope of the line:</u>
If you think about the formula, then you set up the points in your head, you will notice that the first point is on top of the second point. And that way makes it easy to simplify. All you would need to do is subtract down in your head: For example:
(0, 0)
(4, 8)
As you can see, the first point is on top of the other, and that way you can just subtract from bottom to top. If you do it that way, it is set up (Remember, you would do this all in your head)
