Factorise fully

21a - 7a^2

Kim walks 347 mile in 3/10 of an hour what is her speed in miles per hour

2 (5x+7) = 34 two step equation full answer

chloe and her friend were having a competition. Chloe could lift 7 2/3 pounds of cans. Her friend could lift 4 5/8 pounds of cans. how much more did Chloe lift than her friend?

Felicity's dog eats two cups of dog food per day. Felicity's dog eats at least one-quarter cup more than one-half of the amount Martin's dog eats.

Divide and round the answer to 3 decimal places 33.587/13

A manufacture of skateboards offered a 5/2/1 chain discount too many customers. Bobs sporting goods ordered 20 skateboards for a total of $625 list price. What was the net price of the skateboards?

What's is the denominator of 23/24?

A zoo has 35 exhibits 4/7 of them are mammals how many mammal exhibits are there

He price of apples went from $0.30 per lb to $0.90 per lb in three years. Find the rate of change of the price of apples. A) $0.10 per pound per year B) $0.20 per pound per year C) $0.30 per pound per year Eliminate D) $0.40 per pound per year

How are the locations on a coordinate grid different for the ordered pairs (7,0) (0,7)