Mathematics: -4(4x + 4) + 7(1 + 9x)

-4(4x + 4) + 7(1 + 9x) - id4447197896986, lovelyashjoy

Ответ:

brookemcelhaney

03.02.2022

47x -9

Step-by-step explanation:

$-4(4x + 4) + 7(1 + 9x)\\\\\mathrm{Expand}\:-4\left(4x+4\right):\quad -16x-16\\=-16x-16+7\left(1+9x\right)\\\\\mathrm{Expand}\:7\left(1+9x\right):\quad 7+63x\\=-16x-16+7+63x\\\\\mathrm{Simplify}\:-16x-16+7+63x:\\\quad 47x-9$

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Ответ:

bee3176

02.09.2020

Mathematics

In trigonometric ratios, the cos (x) = adjacent over hypotenuse.

Therefore, in the diagram, cos (55°) = s/q

To isolate q, divide both sides by s

cos (55°) / s = 1/ q

Then flip both numerators and denominators (raise both sides to the power of -1)

q = s / cos (55°)

S/cos 55

Step-by-step explanation:

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-4(4x + 4) + 7(1 + 9x)

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