Marta is solving the equation S = 2πrh + 2πr2 for h. Which should be the result?




The formula for the circumference of a circle is C = 2r, where r is the radius and C is the circumference. The equation solved for r is r = .

Which are equivalent equations? Select two correct answers.



The slope-intercept form of a linear equation is y = mx + b, where x and y are coordinates of an ordered pair, m is the slope of the line, and b is where the line crosses the y-axis.




Solve the equation for a.K = 4a + 9ab



The temperature measured in Kelvin (K) is the temperature measured in Celsius (C) increased by 273.15. This can be modeled by the equation K = C + 273.15.
Which are equivalent equations? Select two correct answers.





Solve for w.5w + 9z = 2z + 3w



Solve for k.8k + 2m = 3m + k


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