Answer:
u = 1/6
Step-by-step explanation:
<u>1</u> (12u - 2 )= 0
3
3×<u>1</u> (12u-2) =0×3
3
12u -2 =0
<u>12u</u> = <u>2</u>
12 12
u = <u>1</u>
6
You have to know the difference in change, so you do 59-31 and you get 28, then since you want to know the change in percent you divide the difference, which is 28 and divide that by 31, which is the original amount consumed, and you get 28/31, and you get .90 which is 90%
ANSWER:
She should use 30 ounces of water and 180 ounces of 35% salt.
SOLUTION:
First, let us set up a table and fill in the unknowns with variables x and y.
component Unit Value Amount( ounces) value
0% salt 0.0 x 0.0x=0
35% salt 0.35 y 0.35y
Total Mixture 0.3 210 0.3×210=63
From this, we can easily set up the two equations.
Sum of values of two salts = Value of mixture
0x+0.35y = 63 ................(1)
0.35y = 63
y = 180
Now,
Sum of amounts of each salt = Amount of mixture
x + y = 210 ---------> (2)
so, put y = 180 in (2)
x + 180 = 210
x = 210 – 180
x = 30
Hence, she should mix 30 ounces of water and 180 ounces of 35% salt.
Answer:
c.k¹¹
Step-by-step explanation:
Anything raised to the power of 0 is one so k^0=1
k^4k^7
Since they have the same base you can just add them
4+7=11