How to change a decimal into a fraction? Specific question: change 1.25 to an exact percent?
1 answer:
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Answer:
x = 182.53
Step-by-step explanation:
Use trigonometric ratios to find the whole side length (a) adjacent to 20° and the side length (b) adjacent to 57° respectively. Then find the difference. That would give you the value of x. That is: a - b = x
Let's solve.
✍️Finding the whole side length adjacent to 20°:
Opp = 87
Adjacent length = ? = a
Thus,
Plug in the values
Multiply both sides by a
Divide both sides by tan(20)
Finding the side length adjacent to 57°:
Opp = 87
Adjacent length = ? = b
Thus,
Plug in the values
Multiply both sides by b
Divide both sides by tan(57)
Therefore:
x = a - b
x = 239.03 - 56.50
x = 182.53
Answer:
Yes, the cost in dollars and the amount of yogurt
are proportional.
The equation is:
Step-by-step explanation:
1. If varies directly as
, you can write it as following:
Where is the constant of proportionality.
2. Let's calculate the value of the constant of proportionality. If and
, you have:
3. Then, the equation is:
4. Let's verify if they are directly proportional. Substitute which is the amount of yogurt bought by Jonah. The result must be $0,48:
5. They are directly proportional.