Answer:
Step-by-step explanation:
i nedd the answers
Answer:
f(-1) = 0
f(2) = 16
Step-by-step explanation:
f(-1) = 4(-1) + 4 = 0
f(2) = 4(2) + 8 = 16
Manny can assemble a computer in 50 minutes. That means, in a minute Manny does
![\frac{1}{50}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B50%7D)
job.
Lucy can assemble a computer in 45 minutes. That means, in a minute Lucy does
![\frac{1}{45}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B45%7D)
job.
If they are working together, in a minute they will do:
![\dfrac{1}{50} + \dfrac{1}{45}](https://tex.z-dn.net/?f=%20%5Cdfrac%7B1%7D%7B50%7D%20%2B%20%5Cdfrac%7B1%7D%7B45%7D%20)
![= \dfrac{9}{450} + \dfrac{10}{450} \text{(equalize the denominator)}](https://tex.z-dn.net/?f=%3D%20%5Cdfrac%7B9%7D%7B450%7D%20%2B%20%5Cdfrac%7B10%7D%7B450%7D%20%5Ctext%7B%28equalize%20the%20denominator%29%7D)
![=\dfrac{19}{450}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B19%7D%7B450%7D%20)
In a minute they will do
![\frac{19}{450}](https://tex.z-dn.net/?f=%5Cfrac%7B19%7D%7B450%7D%20)
job
To finish the job they will do it in
minutes or about 24 minutes.
Step-by-step explanation:
There is no option to choose from, but the knowledge of what irrational numbers are, would help cover this cost.
A rational number is a number that can be written as a simple fraction, a/b. Examples are 1/2, 5/6,...
If a number cannot be written as a simple fraction, then it is called irrational.
Example of irrational numbers: √2, π