You can draw 3 wholes 4 tens and 5 ones. For 391 you can draw 3 wholes 9 tens and 1 ones.
Answer:170
Step-by-step explanation:
Place the numbers in ascending order that should give you
120,160,170,180,180
Then find the number that is in the middle that would be 170, there for your answer is 170
slope is
or ![\frac{vertical}{horizontal}](https://tex.z-dn.net/?f=%5Cfrac%7Bvertical%7D%7Bhorizontal%7D)
Look at the image below:
The red (4) is the rise and the blue (1) is the run
this means the slope is...
![\frac{4}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B1%7D)
4
Hope this helped!
~Just a girl in love with Shawn Mendes
Let x be volume of 5% acid and y be volume of the 8%
x + y = 750 and
0.05x + 0.08y = 0.07*750 = 52.5
from first equation y = 750 - x so substituting in the second equation:-
0.05x + 0.08(750 - x) = 52.5
0.05 - 0.08x = 52.5 - 60
-0.03x = -7.5
x = -7.5 / -0.3 = 250 mls <------ answer