Answer:
Correct
Step-by-step explanation:
A negative correlation is one in which as one variable increases, the other goes down. Some studies have shown that as the use of video games increases, the gpa score decreases. That's a negative correlation.
A negative correlation can never be a cause. The reason is the direction each of the variables is going. If the thing that might cause the other variable to go down, then the first variable is not a cause.
You need a positive correlation to claim that one is the cause of the other.
So for example, if you contribute to brainly and answer questions, and give give answers, your understanding of the subject matter is likely to go up.
Giving good answers could be a cause for better marks.
Solve each
5x+7>-8
minus 7 both sides
5x>-15
divide by 5
x>-3
3x+7≤19
minus 7 both sides
3x≤12
divide by 3
x≤4
so we got
x>-3 AND x≤4
and means that the solution set must satisfy both at once
so x is bigger than -3 and less than or equal to 4
so between -3 and 4 including 4
-3<x≤4
last one
Answer:
20 chairs
Step-by-step explanation:
Since we are given the amount total budget and the total amount for the desks then the only variable missing is the maximum amount of chairs. This can be solved with the following equation in which s represents the number of chairs, and we simply solve for s.
800 = 320 + 24s ... subtract both sides by 300
500 = 24s ... divide both sides by 24
20.83 = s
Now we see that the maximum number of chairs that the librarian can buy is 20 because 21 would make her go over the budget and you cannot have 0.83 of a chair.
Answer:
5.A rational number is a fraction where the top and bottom number (numerator and denominator) are integers, a general fraction can have real or complex number and even algebraic expressions as numerator or denominator.
6.Natural numbers are the set of positive integers, that is, integers from 1 to ∞ excluding fractional n decimal part. They are whole numbers excluding zero. Natural Numbers are also called counting numbers. Zero is the only whole number which is not a natural number. It is represented by 0
Step-by-step explanation:
