Answer:
The answer is below
Step-by-step explanation:
Since 1000ml Of Dextrose 25% is needed to be produced from Dextrose 70%. Let us assume that x ml of Dextrose 70% is mixed with a Dextrose 5% to get 1000 ml of Dextrose 25%. Hence:
The amount of Dextrose 5% = 1000 ml - x ml = 1000 - x
25% of 1000 ml = 70% of x + 5% of (1000 - x)
25000 = 70x + 5000 - 5x
Simplifying gives:
65x = 25000 - 5000
65x = 20000
x = 308 ml
Therefore 308 ml of Dextrose 70% was mixed with 692 ml of Dextrose 5% to produce 1000 ml of Dextrose 25%.
X=number total of student at the school.
70% of x=161
can suggest this equation:
(70/100)x=161
0.7x=161
x=161/0.7=230
Answer: the school has 230 students
Answer:
Step-by-step explanation:
SO you add this
Absolute value is always positive, unless there is a negative sign outside of the lines
If there are fraction, just turn them into decimal
- 1/3 = -0.3333....... 1/3 = 0.3333........
when ordering them just think of a number line, because a number line start from negative to positive, then just put the negative numbers first if it asks you to "order from least to greatest" if it asks "order from greatest or least" then put positive numbers first
-0.5 < 1/3 < 1/3 < 0.5 < 1.25
