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3 years ago

PLEASE HELP!!

Mathematics

1 answer:

Mariulka [41]3 years ago

6 0

2. 3. 5. are correct

1. and 4. are actually interchanged

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Find the value of x.

Nostrana [21]

Answer:

21.6 degrees

Step-by-step explanation:

the sum of angles in a triangle is 180 degrees

71 + x + (4x-11) = 180

open the brackets

71 + x +4x - 1 = 180

71 + 1 + x + 4x =180

72 + 5x =180

5x = 180 -72

5x = 108

x = 108/5 = 21.6

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3 years ago

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Step-by-step explanation:

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blondinia [14]

Answer:

General Equation of a Line

$General Equation \\(y - y_{1} )= m (x-x_{1}) \\Slope=m= \frac{x_{2}-x_{1} }{y_{2}-y_{1} } \\\\Given:\\p_{1}=(7,-4)\\p_{2}=(-1,2)\\Solution:\\m=(\frac{-1-7}{2-(-4)}) =\frac{-8}{6}\\y-(-4) = (\frac{-8}{6} )(x-7)\\y+4=\frac{-8x}{6} + 56\\y=\frac{-8x}{6} + 52 \\\\The\\ equation \\ is \\ y=\frac{-8x}{6} + 52$

Step-by-step explanation:

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3 years ago

Pi/24 is the solution for 4cos2 (4x) - 3 = 0<br><br> True or false

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Answer:

True.

Step-by-step explanation:

Given,

4cos2 (4x) - 3 = 0

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Or, 4 cos^2 π/6 = 3

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= 3-3 =0 = Right Hand Side (Proved)

Here, Left Hand Side= Right Hanad Side. So, 4cos2 (4x) - 3=0 is true.

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2 years ago

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