Q2. Express the first quantity as a percentage of the second quantity.
(a) 2 years, 18 months (b) 225mm, 20cm

a. 133.33%

b. 112.5%.

Step-by-step explanation:

(a) 2 years = 24 months.

So the fraction is 24/18 = 4/3.

As a percentage  it is

4/3 * 100 = 133.33%.

b)   20 cm = 200 mm

so the answer is

(225/200) * 100

-= 1.125 * 100

= 112.5 %.

answer: answer: d) v= 1/6 bh  

step-by-step explanation:

since according to the given question,   a pyramid is placed inside a prism.

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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