Answer:
d
Step-by-step explanation:
cosA^2 = 1 - sinA^2
subtitute 1/4 below
= 1 - (1/4)^2
= 1 - 1/16
after calculation
= - 0.9682
Answer:
108 and 110
Step-by-step explanation:
because the pattern is multiply by 4, then add 2
Tonis donation is 3 times longer (6 x 3 = 18)
Add 3.2 to both sides
Simplify -20.7 + 3.2 to -17.5
Multiply both sides by 7
Simplify -17.5 x 7 to -122.5
Switch sides
Answer: y = -122.5.