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luda_lava [24]
3 years ago
11

3r-8(5r-3)what’s the answer

Mathematics
2 answers:
adelina 88 [10]3 years ago
7 0
3r-8(5r)-8(-3)
3r-40r+24
-37r+24
I hope that help you
PolarNik [594]3 years ago
5 0

See picture for solution steps and answer.

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To calculate the relative vector of B we have to:

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The coordenates of:

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C_1(1)+C_2(2t)+C_3(-2+4t^2)+C_4(-12t+8t^3)= 7-12t-8t^2+12t^3

Equating coefficients of like powers of t produces the system of equation:

\left \{ {C_1-2C_3=7} \atop {2C_2-12C_4=-12} \right. \\\left \{ {{4C_3=-8} \atop {8C_4=12}} \right.

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And the result is:

P_B=\left[\begin{array}{ccc}3\\3\\-2\\3/2\end{array}\right]

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