Simplify the following expression:
7y + 2x – 10y + 3x2 - 10x
+
o 3x2 - 8x - 3y
o 3x2 – 8x - 17y
3x2 + 8x – 3y
3x2 - 12x + 3y
i need with this math

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)