Physics Intro Math Refresh and Review

How many sig figs are in the number 3.970?

• 1

• 2

• 3

• 4

How many sig figs are in the number 0.0030?

• 1

• 2

• 3

• 4

Calculate the answer with the appropriate number of sig figs: 167.21-35.4

• 132

• 131.8

• 131.81

• 202.6

Use the Pythagorean Theorem to find the missing side

• 6

• 14

• 23

• 192

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

What is the volume of 150 grams of lead if it has a density of 11.3 g/cm³?

• 13.3 g
• 13.3 cm³
• 0.075 g
• 1695 cm³

Solve for the variable.  

• 1.6
• -10.478
• -6
• 5.5

Simplify the following expression: (3xy)(-4x)

• 12x²y

• 12xy²

• -12x²y

• 7x²y

Simplify the following expression: 4-3(x-2)

• 7x-14

• x-2

• 10-3x

• 4x-8

Solve the following equation for x: 4x+3y-8=0

• 12y+32

• (3/4) +2y

• (-3y+8)/4

• none of the above