Answer:
≈ 2.85 or 3 seconds
Step-by-step explanation:
I understand the question is after how many seconds the ball hits the ground.
<u>h= 0 is when ball hits the ground, then:</u>
<u>Positive root of this quadratic equation is:</u>
- t = (-3 + √665)/8 ≈ 2.85 which is 3 seconds rounded to whole number
Answer:
(-9) + 9 = 0
The integer that should be added is nine
Step-by-step explanation:
when you have a negative integer and you added it by itself but it's a positive instead of a negative the positive takes over the negatives and makes it zero. I hope that made sense
Phrase the question better plz then i can maybe help dont understand it
Answer:
x=12
Step-by-step explanation:
3x-12=24
3x=36
x=12
Answer:
The slope of the green line is 3.
Step-by-step explanation:
<em><u>Definition: </u></em>If the two lines are said to be perpendicular, than the multiplication of their slope is -1.
In other words, the slope of the perpendicular line is the negative reciprocal of the given slope of the line.
Here we are slope of the red line, which is -1/3
Let's take it as "m1"
Let's take "m2" the slope of the green line.
By the above definition,
![m_1 *m_2 = -1](https://tex.z-dn.net/?f=m_1%20%2Am_2%20%3D%20-1)
Given: ![m_1 = -\frac{1}{3}](https://tex.z-dn.net/?f=m_1%20%3D%20-%5Cfrac%7B1%7D%7B3%7D)
Now plug m1 value in the above statement, we get
![-\frac{1}{3} *m_2 = -1](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B3%7D%20%2Am_2%20%3D%20-1)
Multiply both sides by reciprocal of -1/3. The reciprocal of -1/3 = -3
![-3*-\frac{1}{3} *m_2 = -3*-1](https://tex.z-dn.net/?f=-3%2A-%5Cfrac%7B1%7D%7B3%7D%20%2Am_2%20%3D%20-3%2A-1)
![m_2 = 3](https://tex.z-dn.net/?f=m_2%20%3D%203)
Therefore, the slope of the green line is 3.