3. Determine whether the ordered pair is a solution of the equation
a) y + 2x = 3x - 4
b) 6x - 4y = 24

Please help ASAP

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Line wx is parallel to line yz. if m

Solve the equation for b: a= (1/2)(b)(h)