Explanation:
1) An acute angle is less than 90°.
To write an inequality for this statement, we can use the symbol "<" which means "less than". So, the inequality for this statement would be:
Angle < 90°
2) The high temperature today will be under 85 °F.
To write an inequality for this statement, we can use the symbol "<" which means "less than". So, the inequality for this statement would be:
Temperature < 85 °F
3) You must get a 90 or higher to pass the course.
To write an inequality for this statement, we can use the symbol "≥" which means "greater than or equal to". So, the inequality for this statement would be:
Grade ≥ 90
4) The water level will be 10 feet or lower by tomorrow.
To write an inequality for this statement, we can use the symbol "≤" which means "less than or equal to". So, the inequality for this statement would be:
Water level ≤ 10 feet
5) He is older than 100.
To write an inequality for this statement, we can use the symbol ">" which means "greater than". So, the inequality for this statement would be:
Age > 100
These inequalities represent the given statements in a mathematical form. They provide a way to express the relationships between quantities and conditions in a concise and precise manner.