What is the equivalent of 6,721 millimeters in meters

• 6.721

• 67.21

• 672 100

• 6 721 000

If the density pf a substance is 8 g/ml. what volume would 40 g of the substance occupy?

• 0.2 ml

• 5 ml

• 32 ml

• 320 ml

Convert 30 deg Celcius to Fahrenheit

• -1.11

• 86

• 271.89

• 359

How many cubic centimeters are there in a cubic meter?

• 0.1

• 1

• 10²

• 10⁶

What is the perimeter of a rectangular room that has a length of 5.1 m and a width that is 2m less than the length?

• 14.2 m

• 16.4 m

• 20.4 m

• 24.4 m

27 000 written in scientific notation is

• 27 x 10^-4

• 2.7 x 10^-4

• 2,7 x 10³

• 2.7 x 10⁴

Which of these values is greatest?

• 0.0056

• 0.56

• 5.6 x 10^-2

• 56 x 10^-2

It is described as the degree of how close the measurements are to the true value.

• accuracy

• precision

• reliability

• validity

Which group of measurement is the most precise?

• 0.005 g, 0.0049 g, 0.0051 g

• 1.23 cm ³ 2,21 cm ³ 9.92 cm ³

• 23.4 mm, 12.4 mm, 50.2 mm

• 2.3 x 10^-2 kg, 2.31 x 10² kg, 2.29 x 10¹² kg

The mass of unknown substance is 2.86 g. Which of the following sets of measurement represents the value with both accuracy and precision?

• 1.78 g, 1.86 g, 1.76 g, 1.81 g

• 1.95 g, 2.02 g, 1.96 g, 2.01 g

• 2.81 g, 1.98 g, 2.40 g, 2.78 g

• 2.85 g, 2.86 g, 2.84 g, 2.81 g