Two quantities, x and y, are directly proportional. If you take a third of x, what happens to y? It is tripled. It is cubed. It
2 answers:
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The length of the toy tractor is 3.125ft
Data Given;
- length = 25ft
- ratio = 1:8
To solve this question, we need to find the length of the tractor using ratios.
<h3>What is Ratio</h3>This is the proportion of a substance to the entire value of that substance.
If the length of the tractor is 25 ft, then the length of the toy tractor can be found when we divide 25 by 8.
The length of the toy tractor is 3.125ft.
Learn more on ratio here;
A function assigns the values. The time it will take riders to pass over the hill and reach ground level is 122.05 seconds, thus, the correct option is A.
<h3>What is a Function?</h3>A function assigns the value of each element of one set to the other specific element of another set.
Given the height of the roller coaster is given by the function,
h = -0.046t²+5t+75
Now, when the roller coaster will complete the ride, therefore, pass over the hill and reach the ground level, the height of the coaster will be zero, therefore, the function will become.
0 = -0.046t²+5t+75
Now, taking the roots of t, we will get,
Since the value of the time can not be negative, therefore, the time will be 122.05 seconds.
Hence, the time it will take riders to pass over the hill and reach ground level is 122.05 seconds, thus, the correct option is A.
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