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Ahat [919]
3 years ago
9

Need help with math problems A-C. Please?

Mathematics
1 answer:
dolphi86 [110]3 years ago
3 0
A-10......C-he didn't notice that a domino has number that will equal 49 in multiplication but will not add up to be if its less than 4 dominos
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Read 2 more answers
— 4х + 7y = 20<br> у = 3х + 15
Angelina_Jolie [31]

Answer:

x=-5

Step-by-step explanation:

-4x+7(3x+15)=20\\ -4x+21x+105=20\\ 17x+105=20\\ 17x=20-105\\ 17x=-85\\ x=-5

6 0
3 years ago
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