Here are four straight line equations. A 3y = 4x + 5
B 4y = 3x - 1
C 4y + 3x = 7
D 4x + 3y = 2
Which of the following statements are true? Choose as many as apply.
Select one or more:
Lines A and B are perpendicular
Lines A and D are parallel
Lines B and D are perpendiculars

Lines B and C are parallel
Lines A and C are perpendicular

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.

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x