CH 2.3 Formulas and Problem Solving Lesson Slides: 8 Slides

8 Slides • 4 Questions

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Multiple Choice

Solve for y: $4y-5x=9$ .

1

$y=\frac{5}{4}x+\frac{9}{4}$

2

$x=\frac{4}{5}y-\frac{9}{5}$

3

$y=-\frac{5}{4}x+\frac{9}{4}$

4

$y=-5x+\frac{9}{4}$

7

8

9

Multiple Choice

The fastest average speed by a cyclist across the continental United States is 15.4 mph, by Pete Penseyres. If he traveled a total distance of about 3107.5 miles at this speed, find his time cycling.

What formula would be used to find his time?

1

$A=lw$

2

$I=PRT$

3

$P=a+b+c$

4

$d=rt$

10

Multiple Choice

The fastest average speed by a cyclist across the continental United States is 15.4 mph, by Pete Penseyres. If he traveled a total distance of about 3107.5 miles at this speed, find his time cycling.

Substitute the variables in the formula $d=rt$ with the appropriate values.

1

$3107.5=15.4t$

2

$3107.5=r\left(15.4\right)$

3

$15.4=3107.5t$

4

$d=3107.5\left(15.4\right)$

11

Fill in the Blanks

Solve $3107.5=15.4t$ for $t$ .

Do Not Round

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12

201.7857143 hours

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