1 / 9

EXAMPLE 2

Solve the formula P = 2 l + w for w . Then find the width of a rectangle with a length of 12 meters and a perimeter of 41 meters. Solve the formula for w. STEP 1. P – 2 l. = w. 2. EXAMPLE 2. Rewrite a formula with three variables. SOLUTION. P = 2 l + 2 w.

kathrynha
Download Presentation

EXAMPLE 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Solve the formula P = 2l + wfor w. Then find the width of a rectangle with a length of 12 meters and a perimeter of 41 meters. Solve the formula for w. STEP 1 P – 2l = w 2 EXAMPLE 2 Rewrite a formula with three variables SOLUTION P = 2l + 2w Write perimeter formula. P – 2l = 2w Subtract 2l from each side. Divide each side by 2.

  2. w = ANSWER The width of the rectangle is 8.5 meters. 41– 2(12) 2 STEP 2 Substitute the given values into the rewritten formula. EXAMPLE 2 Rewrite a formula with three variables Substitute 41 for Pand 12 for l. w = 8.5 Simplify.

  3. Solve the formula P = 2l + 2wfor l. Then find the length of a rectangle with a width of 7 inches and a perimeter of 30 inches. 3. w = Solve the formula A = lwfor w. Then find the width of a rectangle with a length of 16 meters and an area of 40 square meters. 4. A l ANSWER Write of rectangle is 2.5 m ANSWER Length of rectangle is 8 in. for Example 2 GUIDED PRACTICE

  4. Solve the formula for the variable in red. Then use the given information to find the value of the variable. 5. Find hif b = 12 m bh A = h = 2A b 1 2 for Example 2 GUIDED PRACTICE and A = 84 m2. ANSWER

  5. h = 2A b for Example 2 GUIDED PRACTICE Find the value of h if b = 12m and A = 84m2. Find hif b = 12 m and A = 84 m2. ANSWER h = 14m

  6. Solve the formula for the variable in red. Then use the given information to find the value of the variable. 6. bh A = and A = 9 cm2. b = 2A h 1 2 for Example 2 GUIDED PRACTICE Find bif h = 3 cm ANSWER

  7. Solve the formula for the variable in red. Then use the given information to find the value of the variable. 6. bh A = and A = 9 cm2. 1 2 for Example 2 GUIDED PRACTICE Find bif h = 3 cm ANSWER b = 6cm

  8. Solve the formula for the variable in red. Then use the given information to find the value of the variable. (b1 + b2)h 7. Find hif b1 = 6in., A = b2 = 8in., and A = 70in.2 2A h= (b1 + b2) 1 2 for Example 2 GUIDED PRACTICE ANSWER

  9. Solve the formula for the variable in red. Then use the given information to find the value of the variable. (b1 + b2)h 7. Find hif b1 = 6in., A = b2 = 8in., and A = 70in.2 1 2 for Example 2 GUIDED PRACTICE ANSWER h = 10 in.

More Related