Answer:
AB = 15
Step-by-step explanation:
Since AD and DC are congruent point D lies on the axis of AC
the axis of a segment divides it in two congruent segments, so AB congruent to BC
5x = 4x + 3
x = 3
AB = 5 * 3 = 15
Answer:
{x, y, z} = {-4, 2, 4}
<u>i think this is the answer</u>
Answer:
<u>54</u>
Step-by-step explanation:
27 is half of what number?
27 x 2 = <u>54</u>
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:)
Answer:
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
