1,000,000 milligrams are in one kilogram.
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>
Answer:
40= d-25
Step-by-step explanation:
d is donut
hope it helps!!!
<span><span>If one variable is always the product of the other and a constant, the two are said to be directly proportional. <span>x and y</span> are directly proportional if the ratio <span>y/x</span> is constant.</span><span>If the product of the two variables is always a constant, the two are said to be inversely proportional. <span>x and y</span> are inversely proportional if the product xy is constant.</span></span>In mathematics<span>, two variables are </span>proportional<span> if a change in one is always accompanied by a change in the other, and if the changes are always related by use of a constant multiplier. The constant is called the </span>coefficient<span> of proportionality or </span>proportionality constant<span>.
</span>
Rotation of 180° clockwise change the coordinates from (x,y) to (-x,-y).
If the image point has the coordinates (3,-5).
It means (-x,-y) = (3,-5)
So pre-image point was (x,y) = (-3,5)
Hence, option C i.e. (-3,5) is the final answer.
