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Ugo [173]
3 years ago
12

9a-18b+21c apply distributive property to factor out gcf of all three terms

Mathematics
2 answers:
Anni [7]3 years ago
5 0

Answer:3(3a - 6b + 7c)

hope it helped :)

horsena [70]3 years ago
3 0
The GCF of the three terms (9a, -18b and 21c) is 3

Rewrite each of the terms so 3 is a factor
9a = 3*3a
-18b = -3*6b
21c = 3*7c

So we can say...
9a - 18b + 21c = 3*3a - 3*6b + 3*7c
9a - 18b + 21c = 3(3a - 6b + 7c)

Answer: 3(3a - 6b + 7c)

If you distribute outer 3 to each of the inner terms and multiply, you'll get the original expression again.

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It would be C

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dlinn [17]

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Tammy is buying a soft toy from a shop. The cost of the toy is 9 dollars and she also has to pay a sales tax that is 15% of the
JulsSmile [24]

Answer: I choose B and A.

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7 0
3 years ago
−3(3+x)+4(x−6)=−4. please I need this now
nalin [4]

Answer:

x=29

Step-by-step explanation:

−3(3+x)+4(x−6)=−4

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−9+−3x+4x+−24=−4

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x+−33=−4

x−33=−4

Step 2: Add 33 to both sides.

x−33+33=−4+33

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I hope this helps

7 0
2 years ago
Magen has $1.10 in dimes nickels,and pennies. She has three times as many nickels pas pennies and the number of dimes is two les
Novosadov [1.4K]
We define the variables:
 x = dimes
 y = nickels
 z = pennies
 We write the system of equations:
 0.1x + 0.05y + 0.01z = 1.10
 y = 3z
 x = z-2
 Solving the system of equations we have:
 x = 3
 y = 15
 z = 5
 Answer:
 The number of nickels and pennies is:
 nickels = 15
 pennies = 5
7 0
3 years ago
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