Answer:
4x Times the next point will be 11
Step-by-step explanation:
makes most sense mark as brainlst
Answer:
D. if the sum of x and y is a rational number , then x may be a rational number or x may be an irrational number.
Step-by-step explanation:
the statement is false because the sum of a rational number and an irrational number is always equals to irrational number.
therefore, if the sum of x and y is a rational number , then x can only be a rational number.
for example:
if x = 5 ==== rational
if y = 2 ==== rational
x+y = 7 ==== rational
but, if
x = 1.333333......... ======irrational
y = 5 =======rational
x+y = 6.3333333.... = irrational
By subtracting 256 and moving terms, we get:
This is a difference of two squares.
We can see that for even powers, there will only lie two solutions, because they cannot lie less than zero. Any form of a quadratic will only have 2 solutions, because the remaining are all imaginary. For this example, we can see that, since the degree of the binomial is degree 4, there can only lie two solutions because the conjugate is also a solution.
For any quadratic or even degree functions, the conjugate solution has to be rejected for the equation to satisfy the laws of squares and square roots.
Thus, the remaining 2 solutions are imaginary, leaving only two real solutions.
Subtract m from both sides.
Add 7 to both sides.
Therefore, m = 11.
Answer:
Step-by-step explanation:
Height: h(t)= -0.2t^2+2t = 2t(-0.1t + 1)
-0.2t^2+2t is a quadratic expression with a = -0.2 and b = 2.
The ball reaches its max height at t = -b/(2a).
Here, t = -2 / (2·[-0.2] ), or t = 2/0.4 = 5 (sec)
The ball reaches its max height at at 5 sec.
The max ht. of the ball is h(5) = -0.2(5 sec)^2 + 2(5 sec) = (-5 + 10) sec, or 5 ft.
To determine after how many sec the ball reaches the ground, we set h(t) = 0 and solve for t:
h(t)= -0.2t^2+2t = 0 = 2t(-0.1t + 1). Thus, t = 0 sec or t = 10 sec
The ball reaches the ground again after 10 sec.
