Answer:
<em>3 seconds</em>
Step-by-step explanation:
Complete question:
<em>An object is dropped from a bridge and allowed to freefall to the ground. The height of the object over time can be modeled using h(t)=144-16t2. How many seconds will it take the object to reach the ground? 2 seconds 3 seconds 9 seconds 16 seconds</em>
<em></em>
Given the height of an object modelled by the expression;
<em>h(t)=144-16t²</em>
The object will reach the ground when h(t) = 0
Substitute into the formula
0 = 144 - 16t²
-144 = -16t²
144 = 16t²
Swap
16t² = 144
t² = 144/16
t² = 9
Square root both sides
√t² = ±√9
t = ±3secs
<em>Since the time cannot be negative, hence the object will reach the ground 3 seconds after</em>
Sin(α) = sin (90-Ф)
The right answer is <span>b. In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle.</span>
Answer:
I got 1
Step-by-step explanation:
cos A/cos B
(3/4.24) / (3/4.24)
Since anything over itself is 1, the answer is 1
Hope this helps ;)
Answer:
We can conclude that the distance from Sandy's Hotel to Trader Joes' Store is:
Step-by-step explanation:
From the coordinate plane, we can clearly identify that:
- Sandy's Hotel is located at the point (-8, 9)
- Trader Joes' Store is located at the point (-4, 2)
The distance from Sandy's Hotel to Trader Joes' Store can be calculated such as:
The distance between (-8, 9) and (-4, 2)
miles
Therefore, we can conclude that the distance from Sandy's Hotel to Trader Joes' Store is:
Answer:
uh
Step-by-step explanation:
