As x 3. Two pens and a pencil cost Rs 32. A pen and a pencil cost Rs 20. Taking the price
of a pen as Rs p and the price of a pencil as Rs q, construct a pair of simultaneous
equations and by solving the pair find the price of a pen and the price of a pencil.
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step-by-step explanation:

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step-by-step explanation:

1

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:

the answer is 1 becuz if it were 1.0 that would rip apart the entire so ya. : )

~potato.

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