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Given K = 1, 2, 3, ..., 11. (i) List the prime numbers in K. (ii) Find the probability that a number selected at random from the set K is not a prime number. 1. (b) Factorize completely: (x+y)(2m-n) -
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1. (a)
Given .
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(i) List the prime numbers in : A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. The prime numbers in are . The prime numbers are .
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(ii) Find the probability that a number selected at random from the set is not a prime number:
Determine the total number of elements in .
There are 11 numbers in $K$.Determine the number of prime numbers in .
From (i), there are 5 prime numbers.Determine the number of non-prime numbers in .
Number of non-prime numbers = Total numbers - Number of prime numbers Number of non-prime numbers $= 11 - 5 = 6$.Calculate the probability.
$$ P(\text{not prime}) = \frac{\text{Number of non-prime numbers}}{\text{Total number of numbers}} $$ $$ P(\text{not prime}) = \frac{6}{11} $$ The probability is $\boxed{\frac{6}{11}}$.1. (b)
Factorize completely:Identify the common factor.
The common factor is .
Factor out the common factor.
Simplify the expression inside the square brackets.
The completely factorized expression is .
1. (c)
A typist charges GH¢ 68.00 for the first 8 sheets typed, and GH¢ 11.00 for each additional sheet. Calculate the amount earned if the typist typed a total of 35 sheets.Calculate the number of additional sheets.
Additional sheets = Total sheets - First 8 sheets
Additional sheets sheets.Calculate the cost for the additional sheets.
Cost for additional sheets .
Calculate the total amount earned.
Total amount earned = Cost for first 8 sheets + Cost for additional sheets
Total amount earned .
The amount earned is .2. (a)
The image of when translated by the vector .
A translation by vector means adding to the x-coordinate and to the y-coordinate.
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(i) Find the image of :
The image of is .
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(ii) Find the image of when translated by :
The image of is .
2. (b)
Joyce and Richard contributed GH¢ 10,000.00 and GH¢ 5,000.00 respectively. Richard is paid one-third of the profit as a manager. The rest of the profit is shared in the ratio of their contributions. Total profit is GH¢ 9,000.00.-
Calculate Richard's manager's share.
Richard's manager's share .
Calculate the remaining profit to be shared.
Remaining profit .
Determine the ratio of contributions.
Joyce's contribution : Richard's contribution .
Total ratio parts .-
(i) How much did Joyce receive? Joyce's share from remaining profit . Joyce received .
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(ii) How much did Richard receive in total? Richard's share from remaining profit . Richard's total receive = Richard's manager's share + Richard's share from remaining profit Richard's total receive . Richard received in total .
3. (a)
Asana's original daily wage was GH¢ 25.00. Her daily wage increased by 10%. She worked for 30 days.-
Calculate the increase in daily wage.
Increase .
Calculate the new daily wage.
New daily wage .
Calculate the total amount she will be paid for 30 days.
Total paid
Total paid .
She will be paid .3. (b)
The diagram shows the floor of a room with its dimensions.Let's determine the missing dimensions first:
The total width is 8 m. The bottom segment is 5 m. So, the top inner horizontal segment is .
The total height on the left is 5 m. The right vertical segment is 3 m. So, the bottom inner vertical segment is .-
(i) Find the perimeter: The perimeter is the sum of all the outer sides. Perimeter Perimeter Perimeter . The perimeter is .
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(ii) Find the area: We can divide the L-shaped floor into two rectangles. Method 1: Divide into a top rectangle and a bottom-left rectangle. Rectangle 1 (top): Length , Width . Area. Rectangle 2 (bottom-left): Length , Width . Area. Total Area .
Method 2: Divide into a large left rectangle and a small top-right rectangle.
Rectangle 1 (left): Length $=
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