Answer:
8 7/16
Step-by-step explanation:
The above question has to do with proportionality, specifically direct proportionality.
Direct proportionality means when an item x is directly proportional to an item y. This is represented mathematically as:
x ∝ y
90 cookies will serve 45 students.
The number of cookies needed for 30 students is 90 cookies
From the above question,
45 cookies will serve 15 students
Hence,
15 students = 45 cookies
30 students = ?
Cross Multiply
30 students x 45 cookies / 15 students
= 90 cookies.
Therefore, 90 cookies will serve 45 students.
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Answer:
x^3-2x^2-5x+6
Step-by-step explanation:
Expand:
(x^2+x-2)(x-3) =
x^3-2x^2-5x+6