Which choice is an inequality for this sentence? a number decreased by 20 is greater than 15. answer options with 5 options a. 15 ≤n − 20 b. 15 > n − 20 c. 15 < n − 20 d. 15 > 20 − n e. 15 < 20 − n

The correct option is C. 15 < n − 20

Given, we have a number (let say n) decreased it by 20 so it becomes n-20 which is also greater than 15, so the correct expression is,  .

Now this expression is also written as and read as n-20 is greater than 15.

Hence the correct expression is in option C, .

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times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°