6.54545454545454545454545454545 miles in an hour
Answer:
y = 64(0.5)ˣ
Step-by-step explanation:
We can write this as an exponential decay function. The formula for that is y = a(1 - b)ˣ where a is the initial value and b is the decay factor. In this case, a = 64 and b = 1/2 or 0.5 so the final answer is y = 64(0.5)ˣ.
Answer:
Step-by-step explanation:
z = whole root (x^2 + 9)
The formula of an area of trapezoid:
![A=\dfrac{base_1+base_2}{2}\cdot height](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7Bbase_1%2Bbase_2%7D%7B2%7D%5Ccdot%20height)
We have:
![base_1=3ft+4ft=7ft\\\\base_2=3ft\\\\height=3ft](https://tex.z-dn.net/?f=base_1%3D3ft%2B4ft%3D7ft%5C%5C%5C%5Cbase_2%3D3ft%5C%5C%5C%5Cheight%3D3ft)
Substitute:
![A=\dfrac{7+3}{2}\cdot3=\dfrac{10}{2}\cdot3=5\cdot3=15\ ft^2](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B7%2B3%7D%7B2%7D%5Ccdot3%3D%5Cdfrac%7B10%7D%7B2%7D%5Ccdot3%3D5%5Ccdot3%3D15%5C%20ft%5E2)
The perimeter:
![P=3+4+5+3+3=18\ ft](https://tex.z-dn.net/?f=P%3D3%2B4%2B5%2B3%2B3%3D18%5C%20ft)