Answer: To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
Step-by-step explanation:
This function is a quadratic whose coefficients are a=0.06, b= -7.2, c = 390.
Because a is +, the graph is a parabola that opens up and has a minimum. Your job is to find the value of b at this minimum (at the vertex). It is
b = -(-7.2) / [2(0.06)], or b = 60.
Production costs will be minimized if the number of bats made is 60.
Can we get more information here ?
Answer:
∠ DAB = 48°
Step-by-step explanation:
The sum of the 3 angles in Δ ACD = 180° , then
∠ CAD + 60° + 90° = 180° , that is
∠ CAD + 150° = 180° ( subtract 150° from both sides )
∠ CAD = 30°
Then
∠ DAB + ∠ CAD = ∠ CAB
∠ DAB + 30° = 78° ( subtract 30° from both sides )
∠ DAB = 48°
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