Rena needs to make a total of 60 deliveries this week so far she has completed 39 of them what percentage of her total deliverie
1 answer:
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Answer:
B
Step-by-step explanation:
Since the triangle is isosceles, then the segment from the vertex is a perpendicular bisector and the triangle is divided into 2 right angles with legs 12 and x with hypotenuse 15
Using Pythagoras' identity in the right triangle
( x )² + 12² = 15²
x² + 144 = 225 ( subtract 144 from both sides )
x² = 81 ( multiply both sides by 4 to clear the fraction )
x² = 324 ( take the square root of both sides )
x = = 18 → B