4.5 Negative Exponents and Reciprocals

Construct Understanding

What is a RECIPROCAL?

Two numbers with a product of 1 are reciprocals.

4 = ∙ 1 ∙ = 1

• ==

Without a calculator, Calculate

Reciprocals!!

• = 1

Without a calculator, Calculate

Reciprocals!!= =

= =

= =

Evaluate each power without using a calculator (a and b only)

= =

POWERPOINT PRACTICE PROBLEMEvaluate each power without using a

calculator (a and b only)

Evaluate each power without using a calculator

= =

= =

= =

Evaluate each power without using a calculator

POWERPOINT PRACTICE PROBLEMEvaluate each power without using a

calculator

Paleontologists use measurements from fossilized

dinosaur tracks and the formula v = 0.155to estimate the speed at which the dinosaur travelled. In the formula, v is the speed in metres per second, s is the distance between successive footprints of the same foot, and f is the foot length in metres.

Use the measurements in the diagram to estimate the speed of the dinosaur.

Paleontologists use measurements from fossilized

dinosaur tracks and the formula v = 0.155to estimate the speed at which the dinosaur travelled. In the formula, v is the speed in metres per second, s is the distance between successive footprints of the same foot, and f is the foot length in metres.

Use the measurements in the diagram to estimate the speed of the dinosaur.

The dinosaur travelled at approximately 0.8 m/s.

Use the formula v = 0.155to estimate the speed at which the dinosaur travelled when s =

1.5 and f = 0.3.

The dinosaur travelled at approximately 1.2 m/s.

Section 4.5 HOMEWORK

OPAGES: 233 – 234OPROBLEMS: 3 – 19

QUIZOSections 4.4 – 4.5

OMonday, July 28