You have been asked to select at least 3 out of 7 possible sites for oil exploration. designate each site as s1, s2, s3, s4, s5, s6, and s7. the restrictions are: restriction 1. evaluating sites s1 and s3 will prevent you from exploring site s7. restriction 2. evaluating sites s2 or s4 will prevent you from assessing site s5. restriction 3. of all the sites, at least 3 should be assessed. assuming that si is a binary variable, write the constraint(s) for the second restriction answer

a) s2 +s5 ≤ 1

b) s4 +s5 ≤ 1

c) s2 +s5 + s4 +s5 ≤ 2

d) s2 +s5 ≤ 1, s4 +s5 ≤ 1

c. (3,2,6) is the answer.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

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.

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