Answer:
36 minutes
Step-by-step explanation:
10blocks in 6mins
20blocks in 12mins
30blocks in 18mins
40blocks in 24mins
50blocks in 30mins
60blocks in 36mins
F(3)=2*3-8=-2.
Hope that helps.
Answer:
45.6 mph
Step-by-step explanation:
Well,
If Bird A is EXACTLY 5 times as fast as Bird B, then it can reach 228 mph and Bird A can only reach 45.6 mph.
17.
The point-slope form:
![y-y_1=m(x-x_1)](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29)
We have slope=m=8, and the point (-5, -3). Substitute:
![y-(-3)=8(x-(-5))\\\\\boxed{y+3=8(x+5)}](https://tex.z-dn.net/?f=y-%28-3%29%3D8%28x-%28-5%29%29%5C%5C%5C%5C%5Cboxed%7By%2B3%3D8%28x%2B5%29%7D)
18.
The formula of a slope:
![m=\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
We have the points (3, 4) and (15, 10). Substitute:
![m=\dfrac{10-4}{15-3}=\dfrac{6}{12}=\dfrac{1}{2}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B10-4%7D%7B15-3%7D%3D%5Cdfrac%7B6%7D%7B12%7D%3D%5Cdfrac%7B1%7D%7B2%7D)
The point-slope form:
![\boxed{y-4=\dfrac{1}{2}(x-3)}](https://tex.z-dn.net/?f=%5Cboxed%7By-4%3D%5Cdfrac%7B1%7D%7B2%7D%28x-3%29%7D)
or
![\boxed{y-10=\dfrac{1}{2}(x-15)}](https://tex.z-dn.net/?f=%5Cboxed%7By-10%3D%5Cdfrac%7B1%7D%7B2%7D%28x-15%29%7D)