Lisa has played 6 soccer matches. Her brother josh has played 18 soccer matches. Lisa says Josh has played in 12 times as many matches as she has.

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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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: