Joy mixed baking soda and vinegar for her volcano model. she saw lots of bubbling and fizzing. what can she infer happened?
a. a change in stats liquid to solid
b. matter was created
c. a physical change
d. a chemical change

✔︎A chemical change

✖︎wich is D

 would be ur answer

Explanation:

❐A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.

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the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept