Really need some help

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

The outer exponent is 4 so there will be 5 terms all together. By rules of exponents

C(4,0)(3^4)(2^0)(x^8)(y^0) + C(4,1)(3^3)(2^1)(x^6)(y^3) + C(4,2)(3^2)(2^2)(x^4)(y^6) + C(4,3)(3^1)(2^3)(x^2)(y^9) + C(4,4)(3^0)(2^4)(x^0)(y^12)

The coefficient of the 3rd term: C(4,2)(3^2)(2^2) = 6 x 9 x 4 = 216

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Answer:

<h2> $32.16 \: grams$ </h2>

solution,

$mass = volume \times density \\ \: \: \: \: \: \: \: \: = 2.4 \: \frac{g}{ {cm}^{3} } \times 13.4 \: {cm}^{3} \\ \: \: \: \: \: \: \: \: = 2.4 \times 13.4 \: \: grams \\ \: \: \: \: \: \: \: \: \: \: = 32.16 \: \: grams$