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1 answer:
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Answer:
Step-by-step explanation:
Type of equations,
Linear equations:
Equations in the form of y = mx + b
Quadratic equations:
Equation with a maximum degree = 2
y = ax² + bx + c
Exponential equations:
Any function or equation having exponent,
y = a(b)ˣ
a). f(x) = 3x + 2
Linear function.
b). y = 5ˣ
Exponential equation.
c). f(x) = 2
Linear equation
d). f(x) = 4(2)ˣ + 1
Exponential function
e).
Exponential function
f). y = 4x² + 2x - 1
Quadratic function
Answer:
∠DEF =56°
Step-by-step explanation:
We are given that arc DEF = 248°
So, arc DCF = 360°-248°
arc DCF = 112°
Now we are required to find the ∠DEF.
So, we will use Inscribed angle theorem.
Inscribed angle theorem: The measure of an inscribed angle is equal to one-half the measure of its intercepted arc.
Intercepted arc = arc DCF = 112°
Inscribed angle = ∠DEF
⇒∠DEF =
⇒∠DEF =
⇒∠DEF =56°
Hence the measure of ∠DEF =56°