Ayudenme a resolverlos 2x+15=
3y-17x+4y=
12x-16y+y=
12xy-15xy+3yx=
9xy³÷3xy=
10xyz÷5x⁴y¹z³=
40x⁵y⁶z⁴÷8x⁸y²z⁵=
12x⁵÷2x⁴=
pqw-tres+3pqw-6tres=
(7XY)(3X⁵Y⁴)=

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

Standard deviation of 19,29,21,22,23

Aline passes through 3,7 and 6,9 what equation represents the line