Answer:
158 cases
Step-by-step explanation:
Given tbe quadratic regression model :
y = -2x^2 + 40x + 8
y = number of cases of a new disease
x = number of years
The predicted number of cases of a new disease in 15 years can be calculated thus ;
Put x = 15 in the equation ;
y = -2(15)^2 + 40(15) + 8
y = - 2 * 225 + 600 + 8
y = - 450 + 600 + 8
y = 158
158 cases
Answer:
<u>Answer</u><u>:</u><u> </u><u>3</u><u>^</u><u>-</u><u>2</u>
Step-by-step explanation:

Answer:
∠BDC = 66°
Step-by-step explanation:
∠OCB ≅ ∠OBC, so is 24°. ΔDBC is inscribed in a semicircle, so ∠DBC is a right angle. That makes ∠BDC complementary to ∠BCD:
∠BDC = 90° -24°
∠BDC = 66°
Answer:
D
Step-by-step explanation:
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