Find the equations of the lines which passes through the point (1.2) and perpendicular to the lines represented by
x2-5xy +4y2=0
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Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.

5: 20 dividió por 4 en ambos lados1: 4

The key is the word about, they want an estimation.63 is closer to 60, 71 is closer to 7060 + 70 = 130ryan counted about 130 birds

The answer would be 54.2%.