3 years ago

What equation do I use to solve this?

Mathematics

1 answer:

Archy [21]3 years ago

6 0

Answer:

65+x=7.5x

Step-by-step explanation:

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4. Sean bought 1.8 pounds of gummy bears and 0.6 pounds of jelly beans and paid $10.26. He went back to the store the following

valkas [14]

Let

the price of gummy bears per pound = x

the price of jelly beans per pound = y

$\begin{gathered} 1.8x+0.6y=10.26 \\ 1.2x+1.5y=15.09 \\ 1.2x=15.09-1.5y \\ x=12.575-1.25y \\ \\ 1.8(12.575-1.25y)+0.6y=10.26 \\ 22.635-2.25y+0.6y=10.26 \\ -1.65y=10.26-22.635 \\ -1.65y=-12.375 \\ y=\frac{-12.375}{-1.65} \\ y=7.5 \\ \\ 1.8x+0.6y=10.26 \\ 1.8x+0.6(7.5)=10.26 \\ 1.8x+4.5=10.26 \\ 1.8x=10.26-4.5 \\ 1.8x=5.76 \\ x=\frac{5.76}{1.8} \\ x=3.2 \end{gathered}$

price per pound of gummy bear = $3.2

price per pound of jelly beans = $7.5

5 0

2 years ago

Solve for y in 3(2y-4)=8y+9-9y

8090 [49]

3(2y - 4) = 8y + 9 - 9y

Distribute 3:

6y - 12 = 8y + 9 - 9y

Combine like terms:

6y - 12 = -y + 9

Add y to both sides: