The number of ways that the company can choose four workers is 40920 ways.
<h3>How to calculate the number?</h3>
From the information, the building company employs 3 laborers 12 joiners 8 electrician 4 plumbers. The total number of workers will be:
= 3 + 12 + 8 + 4
= 27 workers
It should be noted that combination will be used to choose the 4 workers. This is illustrated as
Combination formula
ⁿCr = n! / ((n – r)! r!)
n = the number of items.
r = how many items are taken at a time.
where n = 33
r = 4
ⁿCr = n! / ((n – r)! r!)
³³C₄ = 33! / (33 - 4)! 4!
= 33! / 29! 4!
= 33 × 32 × 31 × 30 / 4 × 3 × 2
= 40920 ways
Learn more about combinations on:
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213_5 = 2*5^2 + 1*5 + 3 = 58 base 10
1111_5 = 5^3 + 5^2 + 5 + 1 = 156 base 10
The answer to the multi answer question is y = 4x + 13, and y = 3x2 - x - 1
To find the total revenue for any object, you simply multiply the price of the object by the number of units sold.
In this case, the revenue for helments would be 3*14, and the revenue for bicycles would be 125*b.
Knowing that total revenue was 917, we can form an equation:
125b + 3*14 = 917
125b + 42 = 917
Subtract both sides by 42:
125b = 875
b = 7
Sawyer sold 7 bicycles
For number 3, C is the answer.
#4. D
the coefficient of x² is negative, so the graph opens downward.
the two zeros are (3,0) and (5,0)
cannot see the question when editing. I'll post it in the comments.
