To solve, we will follow the steps below:
3x+y=11 --------------------------(1)
5x-y=21 ------------------------------(2)
since y have the same coefficient, we can eliminate it directly by adding equation (1) and (2)
adding equation (1) and (2) will result;
8x =32
divide both-side of the equation by 8
x = 4
We move on to eliminate x and then solve for y
To eliminate x, we have to make sure the coefficient of the two equations are the same.
We can achieve this by multiplying through equation (1) by 5 and equation (2) by 3
The result will be;
15x + 5y = 55 ----------------------------(3)
15x - 3y =63 --------------------------------(4)
subtract equation (4) from equation(3)
8y = -8
divide both-side of the equation by 8
y = -1
Because 0.09 is ten times as big as 0.009
Answer:
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Answer:
Option A & D are correct Option.
Step-by-step explanation:
We are given with following :
Area of Base = 15 in.²
Height of Prism = 3 in.
Length of edge of base = 5 in.
Volume of Prism = Area of Base × Height = 15 × 3 = 45 in.³
Therefore, Option A & D are correct Option.
