Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

Determine B pls quickly!

Determine B Pls Quickly class=

Sagot :

Answer:

5cm

Step-by-step explanation:

Assuming the two horizontal legs are parallel, the smaller triangle is similar to the larger one, so that corresponding sides occur in a fixed ratio. In particular, you have

(6 cm) / (4 cm) = (6 cm + b) / (7 cm)

Solve for b :

(6 cm) • (7 cm) / (4 cm) = 6 cm + b

b = (6 cm) • (7 cm) / (4 cm) - 6 cm

b = 9/2 cm = 4.5 cm