Angle STR = 28 (since this angle is equal to SRT = 28)
Angle STU = 2x
The two angles STR and STU form a straight angle. They are supplementary. This means they add to 180 degrees
(angle STR) + (angle STU) = 180
28 + 2x = 180 .... substitution property
2x + 28 = 180
2x + 28 - 28 = 180 - 28 ... subtract 28 from both sides
2x = 152
2x/2 = 152/2 ... divide both sides by 2
x = 76
Answer: (b) 76
Yes it is correct!
STEP BY STEP:
There are four pairs (m,n) that work: (5,10), (6,6), (8,4), and (12,3).
Step-by-step explanation:
f(x) = 3x⁴ - 5x² + 2x - 3
When x = -1,
f(-1) = 3(-1)⁴ - 5(-1)² + 2(-1) - 3 = 3 - 5 - 2 - 3 = -7.