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Lunna [17]
3 years ago
8

A science class measured the mass of a balloon to be 4 grams.After the balloon was inflated the mass was 8 grams.What was the ma

ss of the air inside the inflated balloon?
Mathematics
2 answers:
arsen [322]3 years ago
6 0
12 grams were inside
pashok25 [27]3 years ago
4 0
12 grams were inside
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Step-by-step explanation:

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Dennis_Churaev [7]

Answer:

y=\frac{5}{7}x+\frac{135}{7}

Step-by-step explanation:

You only need two points on a line to find the equation for that line.

We are going to use 2 points that cross that line or at least come close to. You don't have to use the green points... just any point on the line will work.  You might have to approximate a little.

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You may use \frac{y_2-y_1}{x_2-x_1} where (x_1,y_1) \text{ and } (x_2,y_2) are points on the line.

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Like this:

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--------------------

-3.5        -2.5

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y-65=\frac{5}{7}(x-64)

Distribute:

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Simplify:

y-65=\frac{5}{7}x-\frac{320}{7}

Add 65 on both sides:

y=\frac{5}{7}x-\frac{320}{7}+65

Simplify:

y=\frac{5}{7}x+\frac{135}{7}

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