3 years ago

If –3x+12 = 9x, then 5x=____

Mathematics

1 answer:

Viktor [21]3 years ago

6 0

Answer:

5x=5

Step-by-step explanation:

You add the -3x to the side with 9x

Then you get 12= 12x

Then simplify 1x=1 which means 5x=5

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Please help will mark brainliest! (random answers will be reported)

Akimi4 [234]

Answer:

value of x =

$\sqrt{216}$

Step-by-step explanation:

here's the solution,

the given triangle is a right angled triangle so, by applying pythagoras theorem,

=》

$perpendicular {}^{2} = hypotenuse {}^{2} - base {}^{2}$

=》

${x}^{2} = {21}^{2} - {15}^{2}$

=》

${x}^{2} = 441 - 225$

=》

${x}^{2} = 216$

=》

$x = \sqrt{216}$

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4 years ago

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Naddika [18.5K]

Answer:

$15x + 30y - 220$

Step-by-step explanation:

$(30 \times \frac{1}{2} x ) + (30 \times - 2) + (40 \times \frac{3}{4} y )+( 40 \times - 4)$

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3 years ago