Janell was at the surface of a swimming pool and recorded the following two measurements, in feet, on a number line: −6, which represents the depth of water in the swimming pool
+8, which represents the height of the slide at the pool

Part A: What does 0 represent in this situation?

Part B: Janell held a pole in the swimming pool. The bottom of the pole was at a depth of 2 feet. How should Janell mark the level of the bottom of the pole on the number line? Explain how you determined this.

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

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:

answer: answer is b.

[m < b = 120º]

step-by-step explanation: