Just please help me, im trying to cram multiple things at once (house is crazy) and I just cant seem to concentrate and understand these.

Step-by-step explanation:

here is how you find the answer

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

now apply the above rules to the given triangle

where we are given the angle of 30°  and the Adj side of 27

y is the Hyp of this triangle and x is the Opp side of this triangle, now plug in the given values  as follows

so use CAH   Cos(30) = 27 / Hyp

Hyp = 27 / Cos(30)

Hyp = 27 / ( / 2)

Hyp = 27 * 2 /  

Hyp = 54 /

y = 54 /

use SOH, since we know the exact value for the Hyp from above

Sin(30) = Opp / ( 54 /  )

Sin(30) * 54 /  = Opp

1/2 * 54 /  = Opp

27 /  = Opp

x = 27 /

:)

3.0

Step-by-step explanation:

If the ratio is boys to girls, in fraction form (ratio form) that's

When we set up the ratio using the numbers, we have to keep the boy stuff with the boy stuff on top, and the girl stuff with the girl stuff on bottom.  So the ratio with the given numbers is

Reducing that down to decimal form, since 12 is divisible by 4 evenly, would be 3.0