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REY [17]
3 years ago
8

The expression 2a+1.5b 2a+1.5b  gives the cost (in dollars) for a a cupcakes and b b cookies at a bake sale

Mathematics
1 answer:
zepelin [54]3 years ago
5 0
Is there a question here? I can't see it!
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I need help!!! and make sure its 100 percent right!! my graduation is at rate of not passing
geniusboy [140]

Answer:

I'm not 100% sure I'm right but I think x = -1

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Double a number decreased by 4
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Solve this linear system 28x + 44y = 964.40 21x + 33y = 723.30
Sladkaya [172]

28x + 44y = 964.40

21x + 33y = 723.30

Let's multiply the first equation by 4 and the second by -4

84x + 176y = 3857.6

-84x - 132y = -2893.2

Add the equations together.

0 + 44y = 964.4

Simplify

44y = 964.4

Divide both sides by 44

y = 964.4/44

Since we have the value of y, let's plug 964.4/44 into y for the first equation.

28x + 44(964.4/44) = 964.40

Simplify the left side

28x + 964.4 = 964.4

Subtract 964.4 from both sides

28x = 0

Divide both sides by 0

x = 0

In conclusion,

y = 964.4/44

x = 0

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Hahaha I need help again please
attashe74 [19]
It could be 2+1 beacuse it says there are twice as many
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If a = band b = c, which statement must be true?
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if a = b and b= c then a,b and c are all equal

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