On a farm, there are some cows and chickens. If the animals have a total of 40 heads and 112 legs, how many cows are there?

Josephine has a rectangular garden with an area of 2x2 + x - 6 square feet Which expressions can represent the length and width of the garden?

Each box contains 10 to the power of 2 pencils. The school store has 15 boxes of pencils. How many pencil does the school store have

A train's mass is 5kg and its acceleration is 5m/s. What is the net force of the train

30 ounces is how many pounds

A rectangle has a perimeter of 28cm and a length of 8cm. What is the width in cm

What is the reference angle of - 3 radians? Explain.

What is the volume of a square based pyramid with a side 11 cm and a perpendicular height of 20 cm

Gwen had 7 1/7 cups of flour. If she used 3 5/7 cups baking, how much flour did she have left

Which expressions are equivalent to 10 a - 25 + 5 b

The high school, middle school, and elementary school are all on the same road. The distance from the high school to the middle school can be represented by the expression 8.7x2+11.9x+3.5.