Sophia buys a reel of thread for sewing. There are 10m of thread on the reel. She uses 210cm. How much is left on the reel in centimeters?

What factor of the number 144is neither prime nor composite

The ages in years, of the people online at the skating rink are 24, 16, 15, 19, 33, 30, 56, and 19. Find the mean, median, mode and range of the data set.

Which expressions are equivalent to - 6+3 (2 + (-4t)) ? Choose all answers that apply: (Choice A) A -12t (Choice B) B 12t-12 (Choice C) C None of the above

11c-c=20 solve for c

In a decagon (a polygon with 10 sides), each vertex is joined with every other vertex by a line segment. What is the total number of segments (including the sides of the decagon) ?

The product of my number and twice my number is 128. what is half my number? Explain how to solve the problem.

What is the rule that describes this pattern of numbers? 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Jim spent $13 to park for 5 hours. The parking garage charges a base rate of $4 for the first two 2 hours, and then an hourly rate for each additional hour, h. The equation 3h + 4 = 13 models Jim's parking cost.

four fifths of senior class went to prom. if 324 seniors went to prom, how many are there in the senior class

Use the gcf and distrubutive property to express the sum as a product for 18+24