Najib borrowed a sum of money at 10% per
annum compound interest. If he repaid the loan
after 2 years, he would have to repay $4356.

(a)If he repaid the loan by two equal annual
instalments at the end of the first year and
the second year, how much would each
instalment be?

x=half

step-by-step explanation:

range is infinite on both x and y axis positive and negative

step-by-step explanation:

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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