Answer:
1
Step-by-step explanation:
Maximum: 100°; minimum: −30°; period: 10 hours
sin(πt/5) varies between -1 and 1, so f(t) varies between -30 and 100.
P=2π/π/5=10
90 degrees should be right
Using the pythagoras theorem
side = sqrt (61^2 - 11^2) = sqrt 3600 = 60 in Answer
X-number of weeks
50-2X ≥ 20
-2X ≥ 20-50 multiply both sides by -1
2X ≥ 30
X ≥ 30/2
X ≥15
Katie can withdraw money for at least 15 weeks.