Answer:
B
Step-by-step explanation:
Hey There!
To solve this problem we have to combine like terms
![7x^3-6x^3=x^3\\6x^2-8x^2=-2x^2\\-5x+10x=5x\\5-7=-2](https://tex.z-dn.net/?f=7x%5E3-6x%5E3%3Dx%5E3%5C%5C6x%5E2-8x%5E2%3D-2x%5E2%5C%5C-5x%2B10x%3D5x%5C%5C5-7%3D-2)
So our answer would be
(b)
Answer:
Step-by-step explanation:
3kx + 24 = 9kx
First subtract 3kx to both sides.
24 = 9kx - 3kx
24 = 6kx
Divide both sides by 6
24/6 = kx
4 = kx
Divide both sides by k.
4/k = x
Answer: 1120
Step-by-step explanation:
Given: Size of the population in the study = 1200
Also they revealed that 12 out of every 180 frogs in the population have spots on their back.
Thus we have fraction![=\frac{12}{180}=\frac{3}{45}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B12%7D%7B180%7D%3D%5Cfrac%7B3%7D%7B45%7D)
Hence,
of total frogs have spots.
Now, ![\frac{3}{45}\ of\ 1200=\frac{3}{45}\times1200=80](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B45%7D%5C%20of%5C%201200%3D%5Cfrac%7B3%7D%7B45%7D%5Ctimes1200%3D80)
Therefore, 80 out of 1200 frogs in the population have spots.
Thus, the number of frogs in the population do not have spots = 1200-80=1120
Answer:
143.733 f/s
Explanation:
for an approximate result, multiply the speed value by 1.467