Answer:
15 over r when r. so 15-5 : 10
Step-by-step explanation:
![\frac{f}{1.4} = 6 \\](https://tex.z-dn.net/?f=%20%5Cfrac%7Bf%7D%7B1.4%7D%20%20%3D%206%20%5C%5C%20)
![f = 6 \times 1.4](https://tex.z-dn.net/?f=f%20%3D%206%20%5Ctimes%201.4)
![f = 8.4](https://tex.z-dn.net/?f=f%20%3D%208.4)
Answer:
x=12
Step-by-step explanation:
Let's solve your equation step-by-step.
2x+8+5x−2=90
Step 1: Simplify both sides of the equation.
2x+8+5x−2=90
2x+8+5x+−2=90
(2x+5x)+(8+−2)=90(Combine Like Terms)
7x+6=90
7x+6=90
Step 2: Subtract 6 from both sides.
7x+6−6=90−6
7x=84
Step 3: Divide both sides by 7.
7x7=847
x=12
![h(t) =-16t^2 + 80t + 4,\quad 0 \le t \le 5.04](https://tex.z-dn.net/?f=h%28t%29%20%3D-16t%5E2%20%2B%2080t%20%2B%204%2C%5Cquad%200%20%5Cle%20t%20%5Cle%205.04)
(a) Find the height of the ball (in feet) above the ground 2 s after its released.
That's just h(2)
h(2) = -16(2²) + 80(2) + 4 = -64 + 160 + 4 = 100
Answer: 100 feet
(b) Find the height of the ball (in feet) above the ground 4 s after its released.
That's just h(4)
h(4) = -16(4²) + 80(4) + 4 = -256 + 320 + 4 = 68
Answer: 68 feet