Two decimal numbers, each with one decimal place, are multiplied. Use the products 3.5 × 8.5, 6.4 × 7.5, and 8.4 × 5.5 to help you decide which of the following statements are true. Choose all that apply.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

yes the data was not prsented

step-by-step explanation:

236 cm 16 time 12 = 192

6 times 7 = 42

192+42

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.