Answer:
x = 6
Step-by-step explanation:
Triangle BCD: cos(60) = x/BC => BC = x/cos(60)
Triangle ABC: sin(45) = BC/6√2 => BC = (6√2)sin(45)
so x/cos(60) = (6√2)sin(45)
x/(1/2) = (6√2)(√2/4)
x/2 = 12/4
x = 2(3)
x = 6
Hint: "4x 2 - 25 = 0" is nearly meaningless. You want 4x^2 - 25 = 0.
Note that both 4x^2 and 25 are perfect squares, so this is the difference of two squares, and is equal to (2x-5)(2x+5)= 0.
2.6 i believe is the answer
Answer:
7
Step-by-step explanation:
Answer:
0.8
Step-by-step explanation:
it is 0.8 it think but um pretty sure sorry if i got it wrong though