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m(ar ABD) = 54°
Solution:
The image of the question is attached below.
Given data:
m∠BCD = 21° and m(ar EF) = 33°
By central angle theorem,
The measure of a central angle is equal to the measure of the intercepted arc.
m (ar EF) = m∠ECF
m∠EFC = 33°
By vertical angle theorem,
If two lines are intersecting, then vertically opposite angles are equal.
⇒ m∠ACB = m∠ECF
⇒ m∠ACB = 33°
m∠ACD = m∠ACB + m∠BCD
= 33° + 21°
m∠ACD = 54°
By central angle theorem,
m(ar ABD) = m∠ACD
m(ar ABD) = 54°
Answer:
(9,7)
Step-by-step explanation:
F(a)=b means the point (a,b) is on the graph of F
The point that is on the graph of the function f, given f(9)=7, is (9, 7). This results because 9 is the input (x-coordinate) and 7 is the output (y-coordinate) of the function.
In mathematics, particularly in graphing functions, each point on the graph of a function f is represented by an ordered pair: the input (x-coordinate) and the output (y-coordinate). When you are given that f(9)=7, this essentially means that when the input is 9, the output is 7. Therefore, the point that is on the graph of the function f is (9, 7).
#SPJ2
Answer:
distributive property
Step-by-step explanation:
dilation by a scale factor of 2, then a reflection over the x-axis
dilation by a scale factor of 1/2, then a rotation of 180° about the origin
dilation by a scale factor of 1/2. then a reflection over the x-axis
Answer:
C : dilation by a scale factor of 1/2, then a rotation of 180° about the origin
Step-by-step explanation: