math 12 grade
find two positive number X and Y such that their sum is 35 and the product X2 Y5 is maximum?
math
Let |ϕ⟩=a|0⟩+b|1⟩ where a and b are nonnegative real numbers. We know that if we measure |ϕ⟩ in the standard basis, the probability of getting a 0 is 925. What is |ϕ⟩?
maths
Find parametric equations of the line that is tangent to the parabola y = x^2 at the point (−2, 4).
arithmetic
A and B can complete a piece of work in 8 and 10 days respectively However they work alternately one day each with beginning the work In how much time will the work be completed?
calculus
find the partial derivatives du/dx, du/dy and du/dt. u= root (r^2+s^2, r = y + x cos(t), s = x + y sin(t);when x = 0, y = 2, t = 2
english
write five sentences about birthday celebration
Economics
Demand Equation Q= 612000- 500P
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