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3 years ago

What is the number that represents X in 12x + 5 = 8x + 21?

Mathematics

2 answers:

iren [92.7K]3 years ago

7 0

I hope this helps you

12x-8x=21-5

4x=16

x=4

mariarad [96]3 years ago

6 0

X is equal to 4 because:
-
Step 1: 12*4+5
Step 2: 48+5=53
This is the answer for the first equation, next, you find the answer to the next equation.
Step 3: 8*4+21
Step 4: 32+21=53
-
53 is equal to 53, therefore x=4.

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2 years ago

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$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

Here's the solution ~

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$\qquad \sf \dashrightarrow \: h {}^{2} = {8}^{2} + {6}^{2}$

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Now, let's find the asked values ~

$\qquad \sf \dashrightarrow \: \sin(x) = \dfrac{opposite \: side}{hypotenuse}$

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$\qquad \sf \dashrightarrow \: \sin(x) = \dfrac{3}{5} \: or \: 0.6 \: units$

For Cos y :

$\qquad \sf \dashrightarrow \: \cos(y) = \dfrac{adjcant \: side}{hypotenuse}$

$\qquad \sf \dashrightarrow \: \cos(y) = \dfrac{6}{10}$

$\qquad \sf \dashrightarrow \: \cos(y) = \dfrac{3}{5} \: or \: 0.6 \: units$

As we can see that both sin x and Cos y have equal values, therefore The required relationships is equality.

I.e Sin x = Cos y

Hope it helps ~

3 0

2 years ago

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2 years ago

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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