Find the value of

 sin⁴30⁰ + cos⁴30⁰ – sin25⁰cos65⁰-sin65⁰cos25⁰

$$\left({?-0.5\over 0.2} \right)={120\over 2}$$

Simplify the following expression.
12 + 2.5 + (1.5 of 4) - 2.6

If $${32÷16-5×2\over 11÷22×8-5×2}={1\over p}$$then what is the value of P?

What is the value of y in the following equation?
(1÷23) of [2{3 + 4(35 + 7)}] = y

If 5x + 5 > 2 + 2x and 5x + 3 ≤ 4x + 5; then x can take which of the following values?

? – 2³ =(7² – 12 ) + ( 10² -17)

$$ {40 \%}\ of( {20\over 4}×?)=48$$