Three forces with magnitudes of 74 pounds, 98 pounds, and 105 pounds act on an object at angles 170°, 220°, and 330°, respectively, with the positive x-axis. Find the magnitude and direction of the resultant force. Round answers to two decimal places.

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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:

d. 5.43x1012 h.5.43e12