Answer:
i dont know
Step-by-step explanation:
X² + 3x < 28
x² + 3x - 28 < 0
(x+7)(x-4) < 0
the zeros will be at x = -7 and x =4
∴ the solution of inequality
x ∈ (-7,4)
See the attached figure
Answer: 16
Step-by-step explanation:
2x3x2+4
6x2+4
12+4
16!
Depending on what type of triangle it is, for a right triangle you would use sin inverse=(opposite/hypotenuse), cos inverse=(adjacent/hypotenuse), or tan inverse=(opposite/adjacent). For any other triangle you would refer to the Law of sines where side a/sine of angle A=side b/sine of angle B and same goes for C
72:80
9:10
Divide 72 and 80 by 8 to simplify it and get the ratio