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Alex777 [14]
3 years ago
11

12) -7x+y=-19 -2x+3y=-19

Mathematics
1 answer:
pogonyaev3 years ago
4 0

Answer: 3360

Step-by-step explanation: Reduce the expression, if possible, by cancelling the common factors.

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3. Factor.
sleet_krkn [62]
It seems that some the work is already here, but I'd be glad to!! So for #3 which is 9x^2+15x, we can factor out both a 3 and an x (3x) so we know that 3x * 3x =9x^2 and 3x * 5 = 15x so once we take the 3x out of the equation, we are left with 3x(3x+5) and that's as far as you can factor.
For #4, we see that the common factor is 10m because 10m * 2n = 20mn and 10m * 3 = 30m so once we take 10m out of the original, it becomes 10m(2n-3)
For #5, this one the common factor is 4xy because 4xy * 2xy=8x^2y^2 and 4xy*x= 4x^2y and 4xy*3=12xy so once we take the 4xy out of the equation, it becomes 4xy(2xy-x-3)
Hope this helps!
5 0
3 years ago
There were 11 friends attending a party, Gifts for the boys cost $1 while gifts for the girls cost $2.
Alex17521 [72]

Answer:

7 girl gifts and 4 boy gifts

Step-by-step explanation:

7 girls gifts = $14
4 boy = $4
total = 18

4 0
3 years ago
Laura tiene láminas y 40 están repetidas si coloca 5 en cada página de su álbum ¿cuántas páginas completará laura?​
bulgar [2K]

Answer:

8.

Step-by-step explanation:

Dado que Laura tiene 40 láminas repetidas, si coloca 5 de estas láminas en cada página de su álbum, para determinar cuántas páginas de su álbum podrá Laura completar se debe realizar el siguiente cálculo:

40 / 5 = Cantidad de páginas

8 = Cantidad de páginas

Así, colocando 5 láminas por página, Laura podrá completar 8 páginas de su álbum.

8 0
3 years ago
A scale model of a car is 9 inches long. the scale is 1:18. How many inches long is the car it represents?
Rom4ik [11]
1 inch of the model - 18 inches of the car
9 inches of the model - x inches of the car

\frac{1}{18}=\frac{9}{x} \\ 
x=9 \times 18 \\
x=162

The car is 162 inches long.
8 0
3 years ago
An online furniture store sells chairs for $100 each and tables for $450 each. Every day, the store can ship a maximum of 24 pie
Anni [7]

Answer:

23 or more chairs.

Step-by-step explanation:

There are 5 tables to start. Each tables is 450 dollars.

5x450=2250

4500-2250=2250

2250(money still need to be made) divided by 100(the price of a chair)=22.5

Since you can't have a half of a chair but you cant have any less, you round it up to 23 chairs. The answer is 23 or more chairs.

6 0
3 years ago
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