Evaluate (8 x 10-3) +0.45 – (7 X 10-2). Write your answer in scientific notation.
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Answer:
{(-34/7, -16/7)}
Step-by-step explanation:
Rearrange values, multiply to solve for x.
(5) 2y = 3x + 10
(-2) 5y = 4x + 8
Solve for x.
10y = 15x + 50 ↓
-10y = -8x -16
Combine and evaluate.
0 = 7x + 34
Subtract 34 from both sides.
7x = -34
Divide both sides by 7.
x =
Plugin x value into either equation to solve for y.
2y = (3 × ) + 10
2y = + 10
2y =
y =