I have been stuck on this problem for a while and tried different methods but still quite didn't get the answer. Can someone help me? ​

x = 180degrees

Step-by-step explanation:

Given the expression;

cos²x + 3cosx + 2 = 0

Let P = cosx

P² + 3P + 2 = 0

Factorize

P² + 2p + P + 2 = 0

P(P+2)+(P+2) = 0

(P+2)(P+1) = 0

P = -2 and P = -1

Substitute P = cosx

cos x = -1

x = arccos(-1)

x = 180degrees

Hence the value of x is 180degrees

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

answer:

what is your question that you ask

step-by-step explanation: