Answer:
y = 51°
Step-by-step explanation:
180° = y + 16° + y - 20° + (180° - y - 47°)
combine like terms:
180° = y + 129°
y = 51°
Angles ∠ACD and ∠CAB are congruent because they are alternate angles. Then the area of the triangle AOB will be 22.53 square cm.
<h3>What is the
area of the right-angle triangle?</h3>
The area of the right-angle triangle is given as
A = 1/2 x B x H
Where B is the base and H is the height of the right triangle.
We know that angles ∠ACD and ∠CAB are congruent because they are alternate angles.
α₁ = 40°
AO = OC = 7.8 cm
Then the area of the triangle will be
Area = 1/2 x 7.8 x 7.8 x tan40°
Area = 22.53 square cm
More about the area of the right-angle triangle link is given below.
brainly.com/question/16653962
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Answer:
y=x^2 is the parent function
The transformations for y=-4(x+3)^2-5 are as follows
horizontal shift left 3 units
vertical shift down 5 units
reflection across the x-axis
vertical stretch