Answer:
Choice A, 20(3n-m)
Step-by-step explanation:
First, lets combine like terms for the question 54n - 20m + 6n,
60n - 20m.
Next, lets rule out the choices that are visibly wrong. This includes Choice B, because it wouldn't equal what is above and Choice C, as it ignores unlike terms.
Now, it is down to Choices A and D. Let's use the distributive property to simplify these options.
Choice A:
20(3n-m)
60n-20m
Choice D:
20(m-3n)
20m-60m
With this, it can be concluded that the correct answer is Choice A since it equals 60n-20m, which is equal to the original question when like terms are combined.
The price of the laptop = $299.99
Given, sales tax = 6%
To find the amount for sales tax we have to find 6% of $299.99.
So the amount of sales tax =
6% of $299.99 = 299.99×(6/100) = (299.99×6)/100
= 1799.94/100 = 17.9994
So we have got sales tax = $17.9994
Therefore, the total cost for laptop including sales tax is selling price of laptop + sales tax.
Total cost for laptop = $299.99+$17.9994 = $317.9894
We have got the required answer.
Total cost for laptop is $317.9894
Answer:
first one is correct and second also but in third it is incorrect and fourth is correct so C is incorrect
Answer:
Number of lab group with 5 students = 3
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