Answer:
x² + 4x + 20 = 12x - 5
x² + 4x - 12x + 20 + 5 = 0
x² - 8x + 25 = 0
Δ = √b² - 4ac
= √(-8)² - 4×1×25
= √64-100
= √(-36)
x ∉ R
Start the number line from 0 and put divisions at 1/12. Then mark at 4/12 for plant A and indicate this was its growth in the first week. Then, make another mark up to 6/12 and indicate this was the plant's growth in the second week.
For plant B, make one mark at 7/12 and indicate that this is plant B's growth in the first week.
After two weeks, plant A has a height of 6/12 inches and plant B has a height of 7/12 inches, so B is taller.
Answer: 3rd one
Step-by-step explanation:
To put 5/2 on a number line, you have to make the fraction a mixed number (2 1/2) then put it on a number line.
Hope this helped!!
Answer:
The required ratio is: 9:5
Step-by-step explanation:
Let the number of frog's Rimma has be x
Then Julia's will be 
Now, Rimma give 1/2 of her frog to Julia means now, Rimma will have 
frog
Then Julia's frog will be 
Now, Rimma will have 
And Julia will have 
Hence, the ratio of Julia's frog to Rimma's frog is 
The required ratio is: 9:5
