Answer:
15 cm since its half
Step-by-step explanation:
Answer:
¹/10 and ¹/9 are under ¹/8 but I dont know about ³/10
Answer:
I think its -120 but am not sure so sorry if its wrong
Answer:
9/4 = 15/x
Multiply by x on both sides
9/4x = 15
Divide by 9/4
x = 60/9 or 6.6 repeated
X^4 - 5x^2 - 36 = 0
(x^2 - 9)(x^2 + 4) = 0 - factor the left side
(x + 3)(x - 3)(x^2 + 4) = 0 - factor (x^2 - 9 as difference of squares)
x + 3 = 0 x - 3 = 0 x^2 + 4 = 0 Set each factor to 0 if any 0 the left side 0
x = -3 x = 3 x^2 = -4
x = 2i or -2i
The roots are 3, -3, 2i, -2i (Don't know if you need the imaginary roots but I gave you them anyway)