C)The matter that makes up rocks is never destroyed,but this matter does change form and move from place to place.
Answer:
x = 2
Step-by-step explanation:
Step 1: Write equation
6 - 7x = 7x - 9x - 4
Step 2: Solve for <em>x</em>
- Combine like terms: 6 - 7x = -2x - 4
- Add 7x to both sides: 6 = 5x - 4
- Add 4 to both sides: 10 = 5x
- Divide both sides by 5: 2 = x
- Rewrite x = 2
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
6 - 7(2) = 7(2) - 9(2) - 4
6 - 14 = 14 - 18 - 4
-8 = -4 - 4
-8 = -8
Answer:
210 miles
Step-by-step explanation:
Let m represent the number of miles driven. According to the problem statement, the charges are ...
total charge = daily charge + (mileage charge)×(miles driven)
Substituting the given values and the variable we have defined, we get ...
158.80 = 100 + 0.28m . . . . . the equation
58.80 = 0.28m . . . . . . subtract 100
210 = m . . . . . . . . . . . . divide by 0.28 . . . . the solution
You drove 210 miles. . . . . . . . the answer to the question asked
Answer:
A, B, D
Step-by-step explanation:
from this function, we can see that 2x is being subtracted from 100. x is the number of incorrect problems, so this can not be a negative value. therefore, the maximum score you can get is 100. y is equal to your final grade as calculating the right side of the equation results in the grade you receive based on the number of incorrect answers. this is a linear function since its highest power is 1. each question is worth 2 points as 2 is being multiplied by the number of incorrect questions (x).
I believe your answer would be B)72.