21,000 round to the nearest ten thousand
2 answers:
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Answer and Step-by-step explanation: An equation represents proportional relationship when dividing the quantities of the equation results in a quotient that is always the same. For example, in general:
Equation: y = mx
= m
m is a constant value, which means is the same.
A. Equation: 120 - x = L
Equation from alternative A is NOT proportional since the division of the quantities doesn't result in a constant.
B. Equation: 1.08p = t
Dividing total cost per item's price, will always give the sales tax, which is constant. So, this equation IS proportional.
C. Equation:
This equation is proportional because dividing marbles per how much each sister gets, always gives the number of sisters:
D. Equation:
This equation is NOT proportional because side length is squared, so it is not constant linearly.
Answer:
Step-by-step explanation:
The midpoint formula is:
where (x₁, y₁) and (x₂, y₂) are the points are the endpoints.
We are given the points: (2,4) and (6,8). Therefore,
Substitute the values into the formula.
Find the x coordinate first.
- Add 2 and 6: 2+6=8
- Divide by 2: 8/2=4
Find the y-coordinate next.
- Add 4 and 8: 4+8= 12
- Divide by 2: 12/2=6
The midpoint of EF is (4,6)