A(n) is a testable statement that attempts to answer a scientific question. 2. A(n) tests the validity of a hypothesis. 3. A condition in an experiment that can change is called a(n) . 4. A scientist manipulates the in an experiment. 5. A scientist measures the in an experiment. 6. A(n) is an unmanipulated point of comparison for treatments in an experiment. 7. is information obtained from scientific studies.

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap