Answer:
the answer is option four D. -8 + 3
Answer:
0.75 rounded is 0.80 and 5.25 rounded is 5.30 and add 0.80+5.30=6.10
Step-by-step explanation:
x = 9.21° or x = 22.5°
cot²2x – 4cot2x + 3 = 0
Let cot2x = y
y² - 4y + 3 = 0
Factorizing, we have
y² - y - 3y + 3 = 0
y(y - 1) -3(y - 1) = 0
(y - 1)(y - 3) = 0
y - 1 = 0 or y - 3 = 0
y = 1 or y = 3
Since cot2x = y
cot2x = 1 or cot2x = 3
1/tan2x = 1 or 1/tan2x = 3
tan2x = 1 or tan2x = 1/3
2x = tan⁻¹(1) or 2x = tan⁻¹(1/3)
2x = 45° or 2x = 18.43°
x = 45°/2 or x = 18.43°/2
x = 22.5° or x = 9.21°
So, x = 9.21° or x = 22.5°
Learn more about cotx here:
brainly.com/question/15546709
Answer:
B) y = 1/5x + 12/5
Step-by-step explanation:
2 = 1/5(-2) + b
2 = -0.4 + b
2.4 = b
2.4 = 12/5
Answer:
1 week = 168 hours
2 weeks = 336 hours
52 weeks = 8736 hours
Step-by-step explanation:
24 hours in a day times 7 days = 168 hours in 1 week
168 times 2 = 336 hours in 2 weeks
168 times 52 weeks = 8736 hours in a year
