Please help me by answering this?
1 answer:
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Answer:
The smaller number can be 8 or .
Step-by-step explanation:
Consider the provided information.
let the larger number is x and the smaller number is y
A positive number is 3 times another number.
If we add 2 to the larger and 5 to the smaller, then one of them becomes 2 times the other.
Case I: If 2nd number is 2 times to the first number.
Substitute the value of x.
Now substitute the value of y in
Therefore, the smaller number is 8.
Case II: If 1st number is 2 times to the second number.
Substitute the value of x.
Therefore, the smaller number is .
See the attached picture for the solution:
May need to round to 23 feet.
May need to round to 23 feet.
Answer:
Option 3.
Step-by-step explanation:
The given function is
where, h(t) is the height of a small rock falling from the top of a 124-ft-tall building and t is the time in seconds.
It is a downward parabola.
Equate the function equal to 0, to find the time at which the rock touch the ground.
If , the according to the quadratic formula
Using quadratic formula, we get
Time cannot be negative. So, the rock remain in the air in the interval 0 < t < 2.
Therefore, the correct option is 3.