Answer:
2.83 s
Step-by-step explanation:
We are given that
When a rock reached the ground then h(t)=0
Using quadratic formula
Time cannot be negative .Therefore, negative value of t can not be possible.
Hence, the rock takes 2.83 sec to reach the ground.
<span>Simplifying
4x = 92
Solving
4x = 92
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '4'.
x = 23
Simplifying
x = 23</span>
E=16 pls brainliest me have a good day/night
<h3><u>The value of x is 19.</u></h3><h3><u>The value of y is 4.</u></h3>
x = 3 + 4y
x + y = 23
Because we have a value for x we can plug it directly into the second equation.
3 + 4y + y = 23
Subtract 3 from both sides.
4y + y = 20
Combine like terms.
5y = 20
Divide both sides by 5.
y = 4
Plug this value for x back into the original equation.
x = 3 + 4(4)
x = 3 + 16
x = 19
<span>1). 16 x 3/4
Step One- 16/1 x 3/4
Step two- 4 goes into 16 four times so cancel the 4 and change the 16 to a 4...
Step three- 4 x 3=12
2). (81/16) divided by (9/14)
Step one- Since its division we use (FREEZE CLAP FLIP)= Freeze (81/16) Clap the division sign and change it to a multiply sign and Flip the riprocals (9/14)
The equation is now 81/16 X 14/9
Next 81 is divisible by 9 and 16 and 14 are divisible by 2
So the new formula i s 9/8 X 7/1
Solution=63/8
3). 2/3 divided by 4/3
Flip the reciprocals for the 4/3
New equation is 2/3 X 3/4
2 and 4 are divisible by 2 and the 3's cancel each other out
Solution: 1/2</span>
