Plz help me with this diagram and answers

There’s three parts to this problem.

Step-by-step explanation:

For the statement and reasons. It would go as following:

1) ΔABF ≅ ΔBCD. It is the given. You would mark these angles as congruent.

2) Angle BCD ≅ to Angle ABF because of CPCTC (corresponding parts of congruent triangles are congruent)

3) Line BF || Line CD. This is because if two corresponding angles are ≅ then the lines are parallel.

Ive only got answers for number three. I hope this helps.

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: