Triangle abc is an obtuse triangle with the obtuse angle at vertex b angle a must b a. less than 90b. greater than 90c. congruent to angle bc. congruent to angle c

The answer is A. less than 90 degrees

Step-by-step explanation:

i took the test

answer: '

the distance between points l and m

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