Answer:
$17
Step-by-step explanation:
So first
The total money John have is $20
then he earned $5 which means $20+$5 = $25
After that he spent $10 = $25- $10 = $15
Again earned $5 = $15+$5=$20
At last spent $3 = $20-$3=$17
Hence the total money he owe or have left is $17
Answer: Average change in sea lion's altitude per minute is 90.05 meters per minute.
Explanation:
Since we have given that
Height at which a sea lion dove from the water surface at sea level = (-)216.12 meters
We'll neglect the negative sign while finding the value of average rate of change.
Time taken to reach the above altitude = 2.4 minutes
So, Average change in the sea lions altitude per minute is given by
Hence, average change in sea lion's altitude per minute is 90.05 meters per minute.
Answer:
$0.40
I had the same question and it was $0.40
When the sides are the same legnth, that is max area
(I can find the max area with calculus but I don't think you know that)
so
if we assume that they are equal
L=W
376=perimiter
P=2(L+W)
376=2(L+W)
376=2(L+L)
376=2(2L)
376=4L
divide both sides by 4
94=L
the dimeintions are 94 by 94, if we mulipy we get 8836ft
C is answer
(note: for those people who say rectangles have to have different side legnths, that is incorrect because the requirement is 4 right angles, all squares are recangles, but not all rectangles are squares)
C is answer
Answer:
x = amount of pure acid to be added = 6.67ml
Step-by-step explanation:
George wishes to increase the percent of acid in 50ml of a 15% acid solution in water to 25% acid, how much pure acid must you add?
let
x = amount of pure acid to be added
15% of 50 + x = 25% of 50 + x
(0.15 * 50) + x = 0.25(50 + x)
7.5 + x = 12.5 + 0.25x
Collect like terms
x - 0.25x = 12.5 - 7.5
0.75x = 5
x = 5/0.75
x = 6.6666666666666
Approximately,
x = 6.67
x = amount of pure acid to be added = 6.67ml
