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sukhopar [10]
3 years ago
14

Seven times the difference of a number and 9is equal to 2

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
5 0
The number . . . . . N
The difference of the number and 9 . . . N-9
Seven times that difference . . . . . . . 7(N-9)

You said that  7(N-9) = 2 .

Divide each side by  7  :  N - 9 = 2/7

Add  9  to each side:  N = 9 and 2/7

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You have two coupons, one is for $25 off and the other is for 25% off. When would you use the $25 off coupon? When would you use
Brut [27]

Answer:

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The $ 25 off coupon is a flat coupon, that is, it does not adapt to the price of the thing to be paid, but rather maintains its value constantly. Therefore, its utilization will be higher if those $ 25 represent a high value compared to the initial price of the product: if the thing is worth $ 50, a $ 25 off coupon represents half its value, while if the thing is worth $ 500, that same coupon will only represent 5% of it. Therefore, I would use the coupon for things that are worth between $ 25 and $ 99.

Instead, the 25% off coupon is a variable coupon, which is adapted according to the value of the product. In other words, a discount will always be made for 25% of said value: if the product is worth $ 80, the discount will be $ 20 (80 x 0.25), while if the product is worth $ 1,000, the discount will be $ 250 (1000 x 0.25 ). Therefore, I would use the coupon for products with a price greater than $ 100, that is, from $ 101 and up.

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Rearrange, P=2l+2w solve for w.
Gennadij [26K]
P= 2l+2w

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Rearrange into standard form.

w= 1/2P -l
8 0
3 years ago
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