Is this set closed or not closed under the operation? Negative integers under multiplication

mike made a fruit basket of the total fruit 5 were apples 5/8 were bananas and 1/4 were oranges, how many pieces of fruit did mike use?

What is the formula for circumference, area for triangles, and area of trapezoids?

Coordinate of the line 3x-5y=2: (2,)

A car travels from City A to City B to the east. It takes 2 hours, and the road mileage is 100 miles. The map shows that the cities are only 80 miles apart (straight-line distance). Calculate the average velocity.

Give two different methods you could use to put the fractions 1/2, 3/4, 3/8, 5/8, 5/16, 7/16, 9/16, and 11/16 in order

Solve: x + 9 x2 - 5x + 6 <0

Ms. green tells you that a right triangle has a hypotenuse of 13 and a leg of 5. she asks you to find the other leg of the triangle. what is your answer?

What happens when the sample size of a newspaper poll is decreased? A. The bias increases B. The variability decreases C. The variability increases D. The bias decreases E. None of the above

Which of the following are factors of 6x^2+30x-36? A) x-1 B) x+2 C) 2 D) 3 E) x+6 F) x-6 G) x-2

360 km is 24% of blank km