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7. a. Lin is using the diagram to prove the statement, “If a parallelogram has one right angle, it is a
rectangle." Given that EFGH is a parallelogram and angle HEF is a right angle, write a statement that will
help prove angle FGH is also a right angle.

Answer question above and explain each step : )

Consider the integral: 4 0 16 − y2 − 16 − y2 4 1 x2 + y2 dz dx dy . (a) describe w. use the standard view of the x, y, and z axes. front half of a cone with a rounded top. full cone with a flat top. right half of a cone with a flat top. front half of a cone with a flat top. right half of a cone with a rounded top.

Solve 2x+y=3 x+y=5 in substitution method