Earth contains water and oxygen molecules. Each mass is given below. Which has the greater mass? Explain how you know.

water = 2.99 * 10-26 kg

oxygen = 2.66 * 10-26 kg

How many pounds are in 6 kilograms? 1kg = 2.2ibs

What is the volume of a rectangular prism with a height of 7 units, a width of 5 units, and a length of 8 units

What is the approximate circumference of a circle with a radius of 20 inches? Use π ≈ 3.14. A. 125.6 inches B. 62.8 inches C. 251.2 inches D. 120 inches

James sets off from home on his bike. The graph shows his journey. A) what is James average speed on his outward journey? B) How long does he stop for? C) What is James average speed on his homeward journey?

How would you solve this using the linear combination method? ((NOT Elimination or Substitution)) 3x + 2y - 3z = - 2 7x - 2y + 5z = - 14 2x + 4y + z = 6

2x+13=21 is it linear

3+6f-5-7n use f=8 and n=-9

Factorise this fully x^2+2x-15

How do you solve 3x-5y=9; x=-1,0,1

What is the 10% cost of 15