Permafrost occurs in areas where the temperature of the ground remains below the freezing mark for two years or more. About a quarter of the Northern Hemisphere's landscape fits this definition. Most of the world's permafrost is found in northern Russia, Canada, Alaska, Iceland, and Scandinavia.
Answer:
Simplifying
15 + 12x + -5x + 4y + -7 = 0
Reorder the terms:
15 + -7 + 12x + -5x + 4y = 0
Combine like terms: 15 + -7 = 8
8 + 12x + -5x + 4y = 0
Combine like terms: 12x + -5x = 7x
8 + 7x + 4y = 0
Solving
8 + 7x + 4y = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-8' to each side of the equation.
8 + 7x + -8 + 4y = 0 + -8
Reorder the terms:
8 + -8 + 7x + 4y = 0 + -8
Combine like terms: 8 + -8 = 0
0 + 7x + 4y = 0 + -8
7x + 4y = 0 + -8
Combine like terms: 0 + -8 = -8
7x + 4y = -8
Add '-4y' to each side of the equation.
7x + 4y + -4y = -8 + -4y
Combine like terms: 4y + -4y = 0
7x + 0 = -8 + -4y
7x = -8 + -4y
Divide each side by '7'.
x = -1.142857143 + -0.5714285714y
Simplifying
x = -1.142857143 + -0.5714285714y
Step-by-step explanation:
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The negative correlation between IQ and age guarantees that all younger people have higher IQ's than older people.
The strength of the linear link between two separate variables, x and y, is shown by correlation coefficients. A positive association is shown by a linear correlation coefficient larger than zero. Indicating a negative association is a value less than zero. The two variables x and y do not have any relationship when their values are 0, to sum up.
A positive correlation indicates that both variables move in the same direction when the correlation value is higher than 0. When is 1, it denotes a complete positive association between the two variables under comparison; when one variable rises or falls, the other one rises or falls in the same direction and by the same amount.
When the correlation coefficient is less than 0, there is a negative (inverse) correlation. This suggests that both variables are moving in the obverse direction. In essence, any reading between 0 and -1 denotes an opposing movement of the two securities. The connection is said to as fully negatively correlated when is equal to -1.
Thus, the negative correlation between IQ and age guarantees that all younger people have higher IQ's than older people.
Learn more about the correlation coefficient at
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Answer:
The school store will need to replenish its supply of pencils every 48 days
Step-by-step explanation:
To find this, divide the number of pencils by the amount it sells per day.
1200/25 = 48