Nia wants to check whether the finance charge applied in her credit card statement is correct. To do this, she needs to calculate the average daily balance in her account for the previous billing cycle. She made a table to do the calculation. The billing gde is 31 days.
What was Nia's average daily balance in this billing cycle?
Days
Balance
7
$745.00
10
$585.15
7
$245.20
7.
$90.75
OA
513.420.00
OB
$13.418.00
Ос.
5800.00
OD.
5432.84.

5x+2x=49

7x=49

x=7. 35 apples

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:

0.85% : )

step-by-step explanation: