Mathematics: If x and y are integers and x y, how do the opposite of x and the opposite of y compare?

If x and y are integers and x y, how do the opposite

Ответ:

vicbar1024

11.01.2022

Mathematics

-x -y

Step-by-step explanation:

we know that

x< y ----> inequality A

The opposite of x is -x

The opposite of y is -y

Multiply the inequality A by -1 both sides

then

-x -y

see the attached figure to better understand the problem

If x and y are integers and x < y, how do the opposite of x and the opposite of y compare?

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Ответ:

ladybugys

22.02.2021

Mathematics

A. 1 second ; 22 ft

Step-by-step explanation:

We have been given that a ball is thrown into the air with an upward velocity of 32 ft/s. Its height h in feet after t seconds is given by the function h=-16t^2+32t+6 .

a. To find the time it will take the ball to reach its maximum height, we need to find x-coordinate of vertex of our given parabola.

We will use $\frac{-b}{2a}$ to find the x-coordinate of vertex of our given parabola.

$\frac{-32}{2\times -16}$

$\frac{-2}{-2}=1$

Therefore, the ball will reach its maximum after 1 second.

b. To find the ball's maximum height we need to evaluate our given equation at t=1 .

h=-16(1)^2+32(1)+6

h=-16*1+32+6

h=-16+32+6

h=22

Therefore, the maximum height of ball is 22 ft.

Upon looking at our given choices we can see that option A is the correct choice.

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If x and y are integers and x < y, how do the opposite of x and the opposite of y compare?

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