B ELL R INGER T HROW B ACK T HURSDAY Write each expression using exponents x 4 x 4 x 4 x 4 2. Y x Y x Y 3. (p)(p)(p) 4. (3w)(3w)(3w)(3w)

B ELL R INGER T HROW B ACK T HURSDAY Write each expression using exponents x 4 x 4 x 4 x 4 2. Y x Y x Y 3. (p)(p)(p) 4. (3w)(3w)(3w)(3w)

H OMEWORK C HECK

S ECTION 6.5 S OLVING P ROPORTIONS R drive > Key > Feb 16_20 > 2_19__6.5 Solving Proportions File > Save As > P drive > Math > Feb 16_20 > 2_19__6.5 Solving Proportions

V OCABULARY Proportion – An equation stating that 2 ratios are equal Cross Products – The cross products of any proportion are equal

C ROSS P RODUCTS

K EY C ONCEPTS

N OTES

E XAMPLE 1 S OLVE P ROPORTIONS

E XAMPLE 2 S OLVE P ROPORTIONS

E XAMPLE 3 – Y OUR T URN S OLVE P ROPORTIONS

E XAMPLE 4 U SE P ROPORTIONS TO S OLVE P ROBLEMS

E XAMPLE 5 U SE P ROPORTIONS TO S OLVE P ROBLEMS

E XAMPLE 6 – Y OUR T URN U SE P ROPORTIONS TO S OLVE P ROBLEMS An architect builds a model of a building before the actual building is built. The model is 8 inches tall and the actual building will be 22 feet tall. The model is 20 inches wide. Find the width of the actual building.

E XAMPLE 7 U SE P ROPORTIONS TO S OLVE P ROBLEMS

E XAMPLE 8 U SE P ROPORTIONS TO S OLVE P ROBLEMS

E XAMPLE 9 – Y OUR T URN U SE PROPORTIONS TO S OLVE P ROBLEMS A serving of 4 crackers contains 70 calories. How many calories are in 7 crackers?

H OMEWORK S ECTION 6.4 #1 - 23