Answer:
f(x)=√(x-a)+b
Step-by-step explanation:
Done on apex
the answer is 1
hope it helps
15x+10x=12x+90; ⇔ 13x=90;
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∠x = 59°
∠ECD = 52° because they are alternate angles and will be equal
∠x = 180° - 52° - 69° = 59° because the sum of the interior angles of a triangle = 180°