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Semmy [17]
3 years ago
10

Level B

Mathematics
1 answer:
Darya [45]3 years ago
5 0
The number has 2 digits - let's call them x and y. The positive difference between the two combinations (lowest-highest and highest-lowest) is always equal to the positive difference of x and y, multiplied by 9.

For example:

76 and 67: 76 - 67 = 9 and ((7-6)*9) = 1*9 = 9
73 and 37: 73 - 37 = 36 and ((7-3)*9) = 4*9 = 36
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X2+5x−7 when x=2 can you help me i am wayy back of the class and next month grades close
spin [16.1K]

Answer:

7

Step-by-step explanation:

x2 + 5x - 7

sub x = 2 in

(2 X 2) + (5 X 2) - 7

4 + 10 - 7

= 7

4 0
2 years ago
Felipe makes salads at a restaurant, On average, Felipe can make 12 salads in 20 minutes. At that rate, how many salads could Fe
iren2701 [21]
12 salads in 20 min
divide both by 2 
6 salads in 10 min
divide by 2 
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3 0
3 years ago
Read 2 more answers
Find the surface area of a rectangular prism measuring<br> 5 m by 8 m by 9 m.
olganol [36]
The formula of the surface area of the rectangular prism is equal:
A=2(wl+wh+lh)
where:
l - length
w - width
h - height
We have:
l = 5m
w = 8m
h = 9m
Substitute:
A=2\cdot(5\cdot8+5\cdot9+8\cdot9)=2\cdot(40+45+72)=2\cdot157=314\ m^2

3 0
3 years ago
The 25 members of the reading club are buying a book to discuss at the next meeting the club leader got a special price the book
Pachacha [2.7K]

Answer:

203.5

Step-by-step explanation:

5 0
3 years ago
Pls help I'm stuck on these questions and i need to turn this in tomorrow ​
MArishka [77]

Answer:

Step-by-step explanation:

11) 4x+2=5x-10 => 4x-5x=-10-2 => -x=-12 => x=12

12)25x=24x+4 => x=4

13)20x=21x-5 => -x=-5 => x=5

14)20x+10x=180 => 30x =180 =>x=6

To understand it better,you may check the picture down below.

6 0
2 years ago
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