3 years ago

Find the value of x. Round your answer to the nearest whole number.

Mathematics

1 answer:

worty [1.4K]3 years ago

7 0

Answer:

x = 49.45839812°

Step-by-step explanation:

Formula:

$arcos( \frac{adjacent}{hypotenuse})$

Replace with given values, so

$arcos ( \frac{6.5}{10})$

Put in calculator, remember it is is DEGREES not RADIANS

Answer:

$x = 49.45839812$

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NISA [10]

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3 years ago

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3 years ago

X+2(x+3(x+4(x+5)))=153

Allushta [10]

Answer:

$x=1$

Step-by-step explanation:

Here first open the inner parentheses and use the distributive property,

$4(x+5)=4x+20\\\\(x+4(x+5))=(x+4x+20)=(5x+20)\\\\3(x+4(x+5))=3(5x+20)=15x+60\\\\(x+3(x+4(x+5)))=(x+15x+60)=16x+60\\\\2(x+3(x+4(x+5)))=2(16x+60)=32x+120\\\\x+2(x+3(x+4(x+5)))=x+32x+120=33x+120\\\\\\Hence\ x+2(x+3(x+4(x+5)))=x+32x+120=33x+120\\\\\Rightarrow 33x+120=153\\\\33x=153-120\\\\33x=33\\\\x=1$