Answer:
She should add 30 ounces of the 12% vinegar she should add to 40 ounces of the 5% vinegar to obtain the needed vinegar with an 8% acidity level.
Step-by-step explanation:
Let X be ounces of the 12% vinegar she should add to 40 ounces of the 5% vinegar to obtain the needed vinegar with an 8% acidity level.
We have the equation
when 8% acidity level is reached.
Solving the equation we have
X*0.12+2=0.08(X+40)=0.08X+3.2
That is 0.12X-0.08X=3.2-2=1.2
Finally 0.04X=1.2 and
X=30
<em>It is cut off so I do not know whether it is from least to greatest or greatest to least. </em>
If it is from <u>least to greatest</u>, then the answer is:
-2/3, -0.29, -0.27
If it is from <u>greatest to least</u>, then the answer is:
-0.27, -0.29, -2/3
-2/3 as a decimal is -0.66. This would put it at the lowest number in the group. Because these are negative numbers, you have to picture them as being on a number line-you cannot just look at the biggest integers. -0.66 is furthest down the number line, followed by -0.29, and finally -0.27 is closest to 0, making it the largest number in the group.
I believe that they typo meant 300 fossils of which 21% are snail shells.
Since % means per one hundred...
300(21/100)=63
Elmer has 63 fossilized snail shells.
Answer:
2 people
Step-by-step explanation:
no. of people = x
total parking costs = 10.25x
total tickets cost = 35.25x
total = 10.25x + 35.25x
suppose 3 people go, then the total cost will be
10.25(3) + 35.25(3) = 136.5 and this is greater than 116
Suppose 2 people go then the cost will be
10.25(2) + 35.25(2) = 91 which is less than 116
so only 2 people can go.
