***will give brainliest to the first correct answer*** a conjecture and the paragraph proof used to prove the conjecture are shown. drag an expression or phrase to each box to complete the proof

1. If the angles are congruent the measures are equal.  That's the angle congruence postulate, usually too obvious to name.

2. The measures of complementary angles add to 90 degrees.  That's the definition of complementary angles.

3. We substitute m∠2 for m∠1 so now m∠2 + m∠3 = 90 degrees.

4. The measures add to 90 degrees so now we conclude ∠2 and ∠3 are complementary.

Why did this proof bother with the measures at all? Proof: Angles 2 and 3 are complementary.  Angle 1 is congruent to Angle 3.  Therefore Angles 1 and 3 are complementary.

its not b

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204