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Serjik [45]
2 years ago
9

6. A bookstore recorded a decrease in the sales of paperback books over the past year. From last year to this year the store exp

erienced a 10% decrease in sales. This year the store sold 7740 books. How many did it sell last year?​
Mathematics
1 answer:
tensa zangetsu [6.8K]2 years ago
5 0

Answer:

6966

Step-by-step explanation:

7740*10%=774

7740-774=6966

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85,146 rounded to the nearest thousand
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First, we have to calculate the remaining amount of money after the cost of the ticket. It is 200 - 87.96 = 112.04 Dividing this number to 30, we can find the maximum number of t-shirts she can buy. It is less 4 and more than 3. So that, the final answer is 3. 
4 0
3 years ago
The speed of the boat going with a current is 20 mph. When the boat goes against the current, the speed is 16 mph. Find the spee
adoni [48]

Answer:

The speed of the boat in still water is 18 mph.

The speed of the current is 2 mph

Step-by-step explanation:

Let x represent the speed of the boat in still water.

Let y represent the speed of the current.

When the boat goes against the current, the speed is 16 mph. Assuming it traveled against the current while going upstream, its total speed would be (x - y) mph. It means that

x - y = 16  (equation 1)

Going downstream, the boat averages 20 mph. Assuming it traveled with the current, its total speed would be (x + y) mph. It means that

x + y = 20  (equation 2)

Adding both equations, it becomes

2x = 36

x = 36/2

x = 18 mph

Substituting x = 18 into equation 1, it becomes

18 - y = 16

y = 18 - 16

y = 2 mph

4 0
3 years ago
Please help me out am confused​
Kipish [7]

Answer:

Step-by-step explanation:

separate into squares

i separated it into three squares (rectangles);

9x5

3x2

3x2

find the area of the three then add, 45+6+6

Total Area = 57m^2

7 0
3 years ago
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