3 years ago

Question 13 cos(546) + abs(-78) = ?

Mathematics

1 answer:

tekilochka [14]3 years ago

3 0

Answer: 78.803811326

Step-by-step

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babunello [35]

Answer: 6.484

Explanation: used a calculator

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3 years ago

3-x=5x+21

vlada-n [284]

Answer:

<h3> $\boxed{ \sf{ \bold{- 3}}}$ </h3>

Step-by-step explanation:

$\sf{3 - x = 5x + 21}$

Move 5x to left hand side and change it's sign

⇒ $\sf{ - x - 5x + 3 = 21}$

Move 3 to right hand side and change it's sign

⇒ $\sf{ - x - 5x = 21 - 3}$

Collect like terms

⇒ $\sf{ - 6x = 21 - 3}$

Subtract 3 from 21

⇒ $\sf{ - 6x = 18}$

Divide both sides of the equation by -6

⇒ $\sf{ \frac{ - 6x}{ - 6} = \frac{18}{-6}}$

Calculate

⇒ $\sf{x = -3}$

Hope I helped!

Best regards!!

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3 years ago

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John needs to cut three strips of woods, 25.5 cm, 15.3cm and 9.25cm long. He has a strip that is 72 cm long. How long will lefto

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Add 25.5, 15.3, 9.25 all together and subtract it from 72. The answer is 21.95

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3 years ago

How complex fractions can be used to solve problems with ratios

alexgriva [62]

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ElenaW [278]

Cubic root of 8 is 2
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4 years ago