Answer:
n = 20
Step-by-step explanation:
Add 7n to both sides.
-5n + 7n - 12 = 2n - 12.
-7n + 7n + 28 = 28.
Now the equation is 2n - 12 = 28.
Add 12 to both sides to isolate the variable.
2n - 12 + 12 = 2n.
28 + 12 = 40.
Now the equation is 2n = 40. Divide both sides by 2.
n = 20.
Answer:
990?
Step-by-step explanation:
Please give me brainliest :)
Answer:
1 / 51
Step-by-step explanation:
Given that :
Number of cards in a deck = 52
Number of heart suit = 13
Number of kings = 4
Recall:
Probability = (required outcome / Total possible outcomes)
P(first card is king) = 4/52 = 1/13
P(second card is heart) = 13/51
Hence,
P(first card is king) * P(second card is heart)
(1/ 13) * (13/51) = 13 / 663 = 1/ 51
3.9 x 10 ^-5 is the answer. 0.000039 in scientific notation is 3.9 x 10^-5
The weighted weekly mean of t-shirt sales is 5.6.
The total number of weeks reported is the sum of the frequency column.
1+4+7+3 = 15 weeks
The total number of t-shirts sold is calculated as the product of the quantity of t-shirts sold and the number of weeks during which those t-shirts were sold.
2*1 + 4*4 + 6*7 + 8*3 = 2 + 16 + 42 + 24 = 84
The weighted mean, which is the product of the total quantity of t-shirts and the total number of weeks, represents the average number of T-shirts sold every week:
84/15 = 5.6
Response: 5.6
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