Insert three arithmetic means between 7 and 15

9, 11 , 13

Step-by-step explanation:

Find the average of 7 and 15, that is

= = 11

We now have 7, 11, 15

Now find the average of 7 and 11, 11 and 15

= = 9

= = 13

Thus the 3 arithmetic means between 7 and 15 are

9, 11, 13

in 1995, potato plants were taken into space aboard the space shuttle columbia.

step-by-step explanation:

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.