Anna is watching fireworks launch on the beach. She is sitting on the sand 250 ft from the firework launch point. Anna tilts her head at an angle of elevation of 37° to see the first set of fireworks explode. Five
seconds later, the next set of fireworks exploded at an angle of elevation of 64°. To the nearest tenth of a
foot, what is the vertical distance between where the two fireworks exploded?

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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:

step-by-step explanation:

gym b charges $1.05 less per hour than gym a.

zero

step-by-step explanation:

f(2)= x-2

plug in the 2 in the "x"

f(2)=2-2

f(2)=0

1. a^4+8a^3+24a^2+32a+16

2.y^8+8y^7+28y^6+56y^5+70y^4+56y^3+28y^2+8y+1

3.x^6-3x^4y^2+3x^2y^4-y^6