True, he reads at a constant rate because he reads 10/7 pages every 2/3 minutes...
2/3 of a minute is 40 seconds... let's use that
(10/7) / 40 = x / 60
600/7 = 40x
divide both sides by 40
15/7 = x
2 1/7 pages per minute
Hope this helps :)
Answer:
You have to replace x for each density
Step-by-step explanation:
Density = Mass / Volumen
1,000 g = 1 kg
1,000,000 cm^3 = 1 m^3
g/cm^3 = 1000 kg/m^3
Using density as x
![volumen \: = \frac{50000}{x} \\ volumen \: sphere \: = 4\pi {r}^{3} \\ 4\pi {r}^{3} = \frac{50000}{x} \\ r = \sqrt[3]{ \frac{50000}{4\pi {x}^{} } }](https://tex.z-dn.net/?f=volumen%20%5C%3A%20%20%3D%20%20%5Cfrac%7B50000%7D%7Bx%7D%20%20%5C%5C%20volumen%20%20%5C%3A%20sphere%20%5C%3A%20%20%3D%204%5Cpi%20%7Br%7D%5E%7B3%7D%20%20%5C%5C%204%5Cpi%20%7Br%7D%5E%7B3%7D%20%20%3D%20%20%5Cfrac%7B50000%7D%7Bx%7D%20%20%5C%5C%20r%20%3D%20%20%5Csqrt%5B3%5D%7B%20%5Cfrac%7B50000%7D%7B4%5Cpi%20%7Bx%7D%5E%7B%7D%20%7D%20%7D%20)
Answer:
13
Step-by-step explanation:
Answer: $185
Step-by-step explanation:
$370 - 50%
370 / 2 = 185