Let x1 < x2 < ... < xn be real numbers representing coordinates of n villages located along a straight road. A post off
1 answer:
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Answer:
1. 4.5 g
2. 56.25 g
Step-by-step explanation:
3 % substance solution means :
3 g of dry substance is present in 100 g of solution.
By unitary method:
The weight of dry substance in 1 g of solution =
The weight of dry substance in 150 g of solution =
Let the weight of solution be w.
8 % solution contains 8 g dry substance in 100 g.
We have to find the weight of the solution(w) which contains 4.5 g of dry substance.
⇒
Answer:
The point of intersection is (3,1)
Step-by-step explanation:
Manipulate these equations to achieve the form of y = mx + c
1) y + 5 = 2x
Y = 2x - 5
2) y = 7 - 2x
Y = -2x + 7
Point of intersection is (3,1) on the graph attached
To check algebraically:
2x - 5 = -2x + 7
4x = 12
X = 3
Substitute to get y
Y = 2x - 5
Y = 2 x 3 - 5
Y = 1
Therefore (3,1)
