AB ­ 2.8 Literal Equations.notebook September 17, 2013

"Do Now"

Classify each number (more than one answer may apply)

1 AB ­ 2.8 Literal Equations.notebook September 17, 2013

Team Hoyt http://www.teamhoyt.com/about/index.html

2 AB ­ 2.8 Literal Equations.notebook September 17, 2013

3 AB ­ 2.8 Literal Equations.notebook September 17, 2013

4 AB ­ 2.8 Literal Equations.notebook September 17, 2013

Unit 2: Solving Equations Name Date 2.8 Literal Equations Block

1. Team Hoyt finished a marathon in d = rt 2 hours and 40 mins (or about 2.6 hours).

A marathon is about 26.2 miles. What was their average speed?

Use the formula d = rt and round to the nearest tenth.

5 AB ­ 2.8 Literal Equations.notebook September 17, 2013

2. Team Hoyt's average speed during a half- d = rt marathon was about 10.1 miles per hour.

A half-marathon is about 13.1 miles.

How long did it take them to finish the race?

Use the formula d = rt and round to the nearest tenth.

6 AB ­ 2.8 Literal Equations.notebook September 17, 2013

To find a baseball 's 3. earned average (ERA), you can use the formula Ei = 9r, where E represents ERA, i represents # , and r represents # earned runs allowed.

Solve the equation for E.

What is a pitcher's ERA if he allows 5 earned runs in 18 innings pitched?

7 AB ­ 2.8 Literal Equations.notebook September 17, 2013

On May 14, 1898, a severe 4. hailstorm Kansas City. The largest hailstones were 9.5 inches in circumference. Windows were broken in nearly every house in the area.

The formula for the circumference of a circle is C = 2πr, where C represents circumference and r represents radius.

a. Solve the formula for r.

b. Find the radius of one of the largest hailstones that fell on Kansas City in 1898.

8 AB ­ 2.8 Literal Equations.notebook September 17, 2013

5. The formula for a Fahrenheit temperature in terms of degrees Celsius is

a) Solve for C.

b) 32 F is equal to how many degrees Celsius?

9 AB ­ 2.8 Literal Equations.notebook September 17, 2013

Whiteboards

10 AB ­ 2.8 Literal Equations.notebook September 17, 2013

Whiteboards

11 AB ­ 2.8 Literal Equations.notebook September 17, 2013

A= r2 Solve for

for b

for h

12 AB ­ 2.8 Literal Equations.notebook September 17, 2013

Homework Change: #8, 10, 11, 15

13