the elephant grass should grow 33.75 inches in 9 days.
you take the number of inches it grows times the number of days:
3.75 (aka 3 3/4) times 9 is 33.75.
Answer:
(x - 3)(x + 7)
Step-by-step explanation:
x^2 + 4x - 21
=> x^2 + 7x - 3x - 21
=> x(x + 7) -3(x + 7)
=> (x + 7)(x - 3)
Answer:
5
Step-by-step explanation:
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.
First triangle side lengths: 9, 4, 8
First triangle perimeter: 21
Second triangle side lengths: 18, 8, 16
Second triangle perimeter: 42
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