Answer is in a photo. I can only upload it to a file hosting service. link below!
bit.
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7.08 + 2x =15.96
-7.08. -7.08
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2x=8.88 divide each by 2
X=4.44
You would plot it in between 4 and 5 but on one of the line marks depending on what there value are
Answer:
- Karla is wrong, correct answer is 2 cups
Step-by-step explanation:
<u>8 oz = 1 cup</u>
<u>Find the answer using the ratio</u>
- 16 oz = 16*1/8 cup = 2 cups
If 
is the unknown concentration of the second solution, then each mL of this solution that is used in the new one contributes 
mL of acid.
There are 40 mL of the new solution, and one quarter is made up of 20% acid while the remaining three-quarters is made up of the solution - that is, 10 mL of a 20% acid solution are used, so that its contribution is 0.2(10 mL) = 2 mL of acid, while 30 mL of the solution are used, so it contributes 
of acid.
In this new solution, we want to get a concentration of 32% acid, so it should contain 0.32(40 mL) = 12.8 mL of acid. Then the total amount of acid in the new solution satisfies
so the second solution has a concentration of 36%. The equation used here is the same as the first choice (a),
they are not equivalent because,2×2 is 4, 4×2 is 6, and 8×2 is 16.so they are not equivalent.
to be an equivalent all of them needs to be able to be multiplied by 2.
