Answer:
1. no
2. no
3. yes
4.yes
Step-by-step explanation:
hope this helped
\boldsymbol{\mathbf{4 ounces water we need to add.}}
An after shave lotion contains 45% of ethyl alcohol
i.e 100% - 45% = 65% nonalcoholic
As mentioned, we have 8 ounces of fluid and that contains 45% of ethyl alcohol.
i.e
We need fluid which 70% nonalcoholic.
i.e 100 - 70 = 30% of alcohol.
Then there is already 3.6 ounces of alcohol in fluid.
As required, Let consider 3.6 ounce is 30% of alcohol.
70% must be other liquid.
That is equal to =
=
= 8.4 Ounces Of other liquid.
Then total ounces of the lotion is
= 3.6 + 8.4
= 12 ounces.
Water required to add is,
= 12 - 8
=
First thing you need to realise is that x/y multiplied by something is the same as x multiplied by that something, ALL divided by y
from here we can think of this as 3(2x-1) all over 5 = 1(5x-3) all over 4,
now we can start by expanding the left side, so it will equal 6x-3 all over 5 = 5x-3 all over 4
Now multiplying both sides by 5 to get rid of the divided by 5 on the left hand....
6x-3 = 25x-15 all over 4
We then multiply both sides by 4 to eliminate the divided by 4 on the right hand side....
We get 24x-12=25x-15
Now subtract 25x from both sides....
-1x = -3
Therefore diving both sides by -1 we get x=3
Answer:
20/54
Step-by-step explanation:
Fraser got 14 questions right
questions correct 70/5 = 14
—— ——
total questions 100/5 = 20
therefore he got 14 questions right
you divide 100 by 5 because percents are always out of 100 and that gets you 20 which is how many questions the spelling bee had
then you do the same to the top (divide by 5) and get 14
14/20 questions were answered right
70% of the questions were correct