Answer:
Look up what a Rhombus and Quadrilateral
Step-by-step explanation:
You subtract normally inside the absolute value (the two bars):
-4-3 is -7
Since the negative is INSIDE the absolute, the answer will turn to a positive. Think of the bars as a jail cell for the negatives. Once the negatives are in there, only positive numbers will come out. So your answer is 7.
The slope would be positive 1 and the y-intercept is 7
Answer:
False
Step-by-step explanation:
to determine if (4, 0 ) is a solution to the system, substitute x = 4, y = 0 into the left side of both equations.
If the left side is equal to the right side of both equations then the point is a solution to the system.
- 4 + 6(0) = - 4 + 0 = - 4 ≠ 4
3(4) + 0 = 12 + 0 = 12
since only one equation is true, the point (4, 0 ) is not a solution to the system.
Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid