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PSYCHO15rus [73]
4 years ago
9

How do i solve by using substitution​

Mathematics
1 answer:
elena55 [62]4 years ago
3 0

Answer:

a = 0, b = 3

Step-by-step explanation:

3a + b = 3

b = - 3a +3

2a - 5b = - 15

2a - 5(-3a + 3) = - 15

2a + 15a - 15 = - 15

17a = 0

a = 0

b = -3a +3 = - 3 *0 +3 = 3

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Lorico [155]
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6 0
3 years ago
In a certain liberal arts college with about 10,000 students, 53% are males. If two students from this college are selected at r
tamaranim1 [39]

Answer:

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Step-by-step explanation:

We have these following percentages:

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