Answer:
About 11.48
Step-by-step explanation:
6.4+2.75+2 1/3
6.4+2.75=9.15
2 1/3=2.33
9.15+2.33=11.48
Answer:
5.5
Step-by-step explanation:
2 times 3 is 6 then but to the other side so plus 6 then You have 2y=11
then you dived it by two so 11 dived by 2 and you get 5.5
Answer:
t=4 seconds
Step-by-step explanation:
The height of the water jacket that is projected vertically upward is given by the equation:
![h = 20 - 5(t - 2)^{2}](https://tex.z-dn.net/?f=h%20%3D%2020%20-%205%28t%20-%202%29%5E%7B2%7D%20)
We want to find the time that, the rocket reaches the ground.
When the rocket reaches the ground, the height , h becomes 0.
This implies that:
![20 - 5(t - 2)^{2} = 0](https://tex.z-dn.net/?f=%2020%20-%205%28t%20-%202%29%5E%7B2%7D%20%20%3D%200)
Subtract 20 from both sides:
![- 5(t - 2)^{2} = - 20](https://tex.z-dn.net/?f=%20-%205%28t%20-%202%29%5E%7B2%7D%20%20%3D%20%20-%2020)
Divide through by -5;
![{(t - 2)}^{2} = 4](https://tex.z-dn.net/?f=%20%7B%28t%20-%202%29%7D%5E%7B2%7D%20%20%3D%204)
Take square root:
![(t - 2) = \pm \sqrt{4}](https://tex.z-dn.net/?f=%20%28t%20-%202%29%20%20%3D%20%20%5Cpm%20%5Csqrt%7B4%7D%20)
l
![(t - 2) = \pm 2 \\ t = 2\pm 2 \\ t = 2 - 2 \: or \: t = 2 + 2 \\ t = 0 \: or \: t = 4](https://tex.z-dn.net/?f=%28t%20-%202%29%20%20%3D%20%20%5Cpm%202%20%5C%5C%20t%20%3D%20%202%5Cpm%202%20%5C%5C%20t%20%3D%202%20-%202%20%5C%3A%20or%20%5C%3A%20t%20%3D%202%20%2B%202%20%5C%5C%20t%20%3D%200%20%5C%3A%20or%20%5C%3A%20t%20%3D%204)
Therefore the feasible time is after 4 seconds.
Answer:
![8^2, 4^3, 2^6](https://tex.z-dn.net/?f=8%5E2%2C%204%5E3%2C%20%202%5E6)
Step-by-step explanation:
8 x 8 = 64
4 x 4 x 4 = 64
2 x 2 x 2 x 2 x 2 x 2 = 64
Answer: yes, it's a quadratic equation, the formula is x = −b ± √(b2 − 4ac) 2a. a=8m2 b=-2m and c =0. This only works if the other side is 0. The answer would be m=1!!!!! can i plz get a brainliest!
Step-by-step explanation: