Answer:
∠ C = 36°
∠ D= 81°
∠ DEC= 63°
Step-by-step explanation:
<em>The exterior angle of a triangle is equal to the sum of the interior opposite angles. </em>
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∴ (11y + 4) + (5y + 1) = 117
11y + 4 + 5y + 1 = 117
16y + 5 = 117
16y = 117-5
16y = 112
y = 112÷16
y = 7
∠ C = 5×(7) + 1 = 36°
∠ D = 11×(7) + 4 = 81°
∠ DEC = 180- 117 = 63°
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Answer:
a=2
Step-by-step explanation:
Firstly, in order to simplify the expression, we should aim to combine the two terms given. In order to do this, both must have the same denominator. We can give them the same denominator by multiplying the second term
by
. This way the fraction value remains the same but now has the same denominator as the first term:

From here we can now combine the two terms:

Therefore, a = 2.
Hope this helped!
The answer would be 0.02, I believe
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Answer:
14π in
Step-by-step explanation:
Circumference of a circle is 2πr, and since AB is 14(the diameter), splitting that in half gets 7 (the radius). Plug that into the equation and you get:
2*7*π=C
14π=C