Answer:
7/18
Step-by-step explanation:
1/6 x 3 = 3/18
3/18 + 4/18 = 7/18
Answer:
12.5%
Step-by-step explanation:
105 is what percent of 120?
you can use this proportion:
if/of = %/100
in this problem:
is = 105
of = 120
'what percent' = p/100
105/120 = p/100
cross-multiply to get:
120p = 10500
p = 10500/120
p = 87.5
So the electrician used 87.5%, out of 100%, meaning 12.5% went unused
The question is in clear because it does not say how many people Mario is sharing with. To get the answer you have to take 6•18=Total ounces
Total Ounces divided by (people sharing with+ Mario) = same amount per person
Just plug in the 0 as it says in f(x) = f(0) into the equation.
f(x) = x² - 7x - 30
f(0) = 0² - 7(0) - 30
f(0) = 0 - 0 - 30
f(0) = -30
hope this helps, God bless!
Answer:
Step-by-step explanation:
Given: ![7-3[(n^{3} +8n)\div (-n)+9n^{2} ]](https://tex.z-dn.net/?f=7-3%5B%28n%5E%7B3%7D%20%2B8n%29%5Cdiv%20%28-n%29%2B9n%5E%7B2%7D%20%5D)
Now simplifying expression using PEDMAS
First solving for small parenthesis.
taking common of n
= ![7-3[n(n^{2} +8)\div (-n)+9n^{2} ]](https://tex.z-dn.net/?f=7-3%5Bn%28n%5E%7B2%7D%20%2B8%29%5Cdiv%20%28-n%29%2B9n%5E%7B2%7D%20%5D)
using law of indices, 
= ![7-3[-(n^{2} +8)+9n^{2} ]](https://tex.z-dn.net/?f=7-3%5B-%28n%5E%7B2%7D%20%2B8%29%2B9n%5E%7B2%7D%20%5D)
Opening parenthesis
= ![7-3[-n^{2} -8+9n^{2} ]](https://tex.z-dn.net/?f=7-3%5B-n%5E%7B2%7D%20-8%2B9n%5E%7B2%7D%20%5D)
= ![7-3[ -8+8n^{2} ]](https://tex.z-dn.net/?f=7-3%5B%20-8%2B8n%5E%7B2%7D%20%5D)
Again using distributive property of multiplication
= 
=
Hence, the answer is
