Answer:
It A or the first one
Step-by-step explanation:
Answer:
First awnser
Step-by-step explanation:
4x(7-v2)+v7(7-v2)
28-4v2+7v7-v14
I don’t understand you are asking
Answer:
19 cups of water.
Step-by-step explanation:
1:2 ratio
1=9.5
2=9.5*2= 19
Based on the calculations, the unknown number is equal to 
- Let the unknown number be x.
<h3>How to find an
unknown number:</h3>
Translate the word problem into an algebraic expression, we have;
Adding 21 to the unknown number:

Multiplying the result by 3:

84 more than two-thirds of the unknown number:

Equating the equations, we have:

Cross-multiplying, we have:

Read more on word problems here: brainly.com/question/13170908