Step 1 associative property
step 2 subtract 2x from both sides
step 3 add 28 to both sides
step 4 divide 2 on both sides
Answer:
1.666667 headphones per hour (simplify this)
Step-by-step explanation:
divide the top and bottom by 3 and you should get your answer
9514 1404 393
Answer:

Step-by-step explanation:
The slope of a line is the same everywhere, so an equation can be written making use of that fact.

Cross-multiplying gives ...
2(y -5) = x -2
2y -10 = x -2 . . . eliminate parentheses
2y = x +8 . . . . . . . add 10; next, divide by 2

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These equations match choices B and D.
Hypotenuse² = perpendicular² + base²
H² = 20²+21²
H²= 400+441 = 841
H = √841
H = 29 cm