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Katena32 [7]
3 years ago
5

Three times a number plus twice another is 10, while their sum is 10, Find the numbers

Mathematics
1 answer:
Aleks [24]3 years ago
5 0
3a+2b=10 \\\\ a+b=10 \\\\ \boxed{a=10-b} \\\\ 3(10-b)+2b=10 \\\\ 30-3b+b=10 \\\\ -b=10-30 \\\\ -b=-20 \\\\ \boxed{b=20} \\\\ a=10-20 \\\\ \boxed{a=-10}
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Lady_Fox [76]

Answer:

We will need about 3.3 gallons of red paint.

Step-by-step explanation:

Let

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  • w = amount of white paint

The amount of red paint is half the amount of white paint.

r = 1/2 w

w = 2r [1]

We need to make a total of 10 gallons. Then,

r + w = 10 [2]

Replacing [1] in [2]

r + (2r) = 10

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r = 3.3

We will need about 3.3 gallons of red paint.

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3 years ago
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Answer:

c

Step-by-step explanation:

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3 0
3 years ago
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scZoUnD [109]
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4 0
3 years ago
Just number 14. Nothing other unless u want to
Shkiper50 [21]

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