2x ≥ 6
Isolate the x. Divide 2 from both sides
2x/2 ≥ 6/2
x ≥ 6/2
x ≥ 3
x ≥ 3 is your answer
~<em>La Pucelle</em>
Samuel could round both of the individual numbers, to get s rounded answer. So, he could round 23 to 20, and 395 to 400, to get a product of 8000.
Or, he could multiply the numbers first, so 23*395 to get a product of 9085, which would then round to 9000, or depends on what place value it would want to be rounded to.
Answer:
n = 10
Step-by-step explanation:
20/4 = 50/n
20n = 50 x 4
20n = 200
n = 10
Hope that helps!
Part A:
Given that t<span>he
height of a batted ball is modeled by the function
,
where x is the horizontal distance in feet from the point of impact with
the bat, and h is the height of the ball in feet.
At maximum height,
Thus, the maximum height occurs when x = 61 feet and the maximum height is given by
Therefore, the maximum height is 40.21 feet.
</span>
a) The motion described by the particle is undoubtedly a uniformly accelerated rectilinear motion, since the trajectory is rectilinear and the acceleration is constant.
b) In order to calculate the acceleration, we must apply the formula mentioned above, in such a way that the acceleration gives us:
Our acceleration is 2 meters per second squared.
c) We are asked to calculate the function of velocity in relation to time, we simply substitute in the formula.
Very easy!!.
d) To know what speed the particle will have at the instant of t = 8s, it is enough to substitute the value of “t” in the previous formula.
So the speed at time t = 8s is 21 m/s²
e) In this case we are asked to determine at what instant of time the particle will have a speed of 15 m/s, we replace this value in the formula, simply clearing the variable "t", that is:
Clearing "t"
Substituting the speed value
That is to say that when the particle has a speed of 15 m/s, it will happen exactly at 5 seconds.