Answer:
Step-by-step explanation:
<u>Sides of the picture added margin:</u>
<u>Solution</u>:
- A(margin) = Total area - A(picture)
- (8 + 2x)(5 + 2x) - 5*8 = 30
- 4x² + 10x + 16x + 40 - 40 - 30 = 0
- 4x² + 26x - 30 = 0
- 2x² + 13x - 15 = 0
- x = (-13 + √(13² + 2*4*15))/4
- x = (-13 + 17)/4
- x = 1 cm
Note. The other root is ignored as negative.
Answer:
-300 dollars
Step-by-step explanation:
Started : 400
Doubled : 2*400 = 800
Lost 200: 800-200 = 600
Mom lost 500 of his money: 600-500=100
He lost 400 more: 100-400= -300
He has -300 dollars
21 is the first one, 2.27 is the second answer. Hope it helps!
The answer is: Fin whale and Sei whale.
The explanation for this exercise is shown below:
To solve this problem you must use the table given in the figure attached, which shows the numbers of whales alive today. In the column titled "Population" you can see these numbers.
Therefore, when you analize the table, you can conclude that the two kinds of whales that have the closest number alive are: Fin whale, with a population of 55,000 and Sei whale, with a population of 54,000.
