Answer:
(42,28)
Step-by-step explanation:
set up the problem by converting percentages to decimal
x+y=70
.30x+.80y=50(x+y)
solve for x, so minus y in order to get it x alone. equation should look like this: x=70-y
30(70-y)+80y=50(70-y+y)
solve the equation for y
y=28
plug the value of y into the equation x=70-y
x=70-28
solve for x
x=42
check the solution of (42,28)
42+28=70
30*42+80*28=50(42+28)
simplify the equations
70=70
3500=3500
the ordered pair is a solution
so James needs 42 liters of 30% antifreeze and 28 liters of 80% antifreeze.
(42,28)
message me on ig for math help: eduardo.gti
Answer:
mean (average) is 17.6
mean absolute deviation is 15.2
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<em>Step-by-step explanation:</em>
to find <em>mean</em>, u add up all your numbers and divide by how many there are...
to find <em>mean absolute deviation</em> you find the mean of the data and subtract that amount to each of your data pieces...
then u find absolute value of each of them (to make them all positive)
then u add all of those numbers up and divide by how many there are, and that is your answer!!
<em>Hope this helps u in the future!!</em>
Answer:
667.25 in³
Step-by-step explanation:
V = πr²h = 3.14 x 5² x 8.5 = 667.25
Answer:80% of shots
Step-by-step explanation:
Divide 16 and 20 by 2
8 and 10
10 is total and 8 is how much she made therefore 80% of shots were made by Tamara.
-6*3 =-18
11*4=44
-18/44. Reduce. Divide top and bottom by 2
-9/22
