The number is (2√3) / 3
To find the missing number, convert what it says in words to an equation:

Divide both sides by 15:

Take the square root:
Answer:
y=53
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
y=8(6)+5
y=48+5
y=53
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Answer:
36
Step-by-step explanation:
Flip your eq. x/3 + 6 = 18.
Solve (Number on one, variable on other)
+6 -6 = 0. 18-6=12.
Multiply.
12 * 3 = 36.
Answer:
x =
(11/35)
Step-by-step explanation:
sine = opposite/hypotenuse
sinx = 11/35
x =
(11/35) ≈ 18.32