3 years ago

An expression is given. 3 × (8 + 2) ÷ 2 Which statement is true about the parentheses in this expression?

1 answer:

muminat3 years ago

5 0

Answer:

I don't think you typed the full problem, but the answer is either that you do the parenthesis first, or that it adds to 10

Step-by-step explanation:

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Work out the angle of elevation from the

insens350 [35]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:Angle \:\: of \:\: elevation= 30°$

____________________________________

$\large \tt Solution \: :$

Let the angle of elevation be " x "

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{9 \sqrt{3} }{18}$

$\qquad \tt \rightarrow \: \cos(x) = \dfrac{ \sqrt{3} }{2}$

$\qquad \tt \rightarrow \: x = \cos {}^{ - 1} \bigg( \cfrac{ \sqrt{3} }{2} \bigg )$

$\qquad \tt \rightarrow \: x = 30 \degree \: \: or \: \: \cfrac{ \pi}{6} \: \: rad$

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2 years ago

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Simplify the expression (4x - 3)(x + 5).

Drupady [299]

(4x-3)(x+5)
= 4x^2+20x-3x-15
= 4x^2+ 17x -15.

The final answer is 4x^2+ 17x -15~

3 0

3 years ago

Whats going on in this attachment help thanks xD

rodikova [14]

Ratio remains same

$\\ \rm\Rrightarrow \dfrac{4}{6x-3}=\dfrac{3}{2}$

$\\ \rm\Rrightarrow 8=3(6x-3)$

$\\ \rm\Rrightarrow 8=18x-9$

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$\\ \rm\Rrightarrow x=17/18$

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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