Answer:
6.5
Step-by-step explanation:
im doing this for points ok
Let the x ml of water be mixed with 237 ml of ammonia whose strength is 100%, in order to create a mixture of 75% strength.
The equation required to solve this will be:
237/(237+x)=75/100
solving for x we get:
237/(237+x)=3/4
237×4=3(237+x)
948=711+3x
3x+711=948
3x=948-711
3x=237
x=237/3
x=79 ml
therefore the amount of water to be added will be 79 ml
C, Reflection across Y = X
7/8 is the total amount of combined brown and regular sugar
Y=3 bc (2y-11) + (y-2) = 3y - 9
3y -9 y - 3
——— = ——— = -1( y = -3 ) = y= 3
3. y
hope that helped!
