Isosceles triangle ABC contais angle bisectors BF, AD, and CE that intersect at X. B
E
D
Х
A
F
с
If BABC and mBCA = 48°, what is m CXA?

∠ CXA = 132°

Step-by-step explanation:

Given ∠ BCA = 48° then ∠ BAC = 48° ( base angles of an isosceles triangle )

∠ XAF = ∠ XCF = 24° ( AD and CE bisect the angles ) , then

∠ CXA = 180° - (24 + 24)° ← angle sum of triangle

∠ CXA = 180° - 48° = 132°

good luck on your studies! : )

david edward.

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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