Please help me with this. Numbers 1-11

1. 8.378

2. 3.534

3. 12.566

4. 0.262 rad or

5. 1.222 rad or

6.  5.236 rad or

7. 240°

8. 165°

9. 22.5°

10. 30° = radians

45° = radians

radians = 60°

radians = 90°

120° = radians

radians = 45°

radians = 180°

radians = 270°

360° = radians

11. 9.424 inches

Step-by-step explanation:

Problems 1-3:

S=r*Ф

S= arc length, r= radius, Ф= angle in radians

You need to convert the angle from degrees to radians before you can use it in the equation. You do this by multiplying it by pi and dividing by 180. Then you can plug this and the radius into the equation to solve for the arc length.

1) 120° x = 2.094 rad

S= 4 x 2.094 = 8.378

2) 135° x = 2.356 rad

S= 1.5 x 2.356 = 3.534

3) 240° x = 4.189 rad

S= 3 x 4.189 = 12.566

Problems 4-6:

4) 15° x = 0.262 rad or

5) 70° x = 1.222 rad or

6) 300° x = 5.236 rad or

Problems 7-9:

7) 240°

8) 165°

9) 22.5°

Problem 10:

30° = radians

45° = radians

radians = 60°

radians = 90°

120° = radians

radians = 45°

radians = 180°

radians = 270°

360° = radians

Problem 11:

S= r * Ф

S= 4 *

S= 3 = 9.424 inches

english, cause i can’t you

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: