What is a recursive formula that represents the pentagonal numbers?
given an isosceles right triangle whose hypotenuse is 4 units long, what is the exact length of each leg?
susan decided to go for a walk today after class. she walks out her front door and walks due south for 2 miles, then she makes a 90 degree turn to the left and walks for 1 mile. at that point, she makes a 90 degree turn to the right and walks for another 3 miles. how far is she from her front door? give the exact answer.

d) 48

step-by-step explanation:

16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256,272,288,304,320,336

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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step-by-step explanation:

m∠a is 90°

m∠b is 40°