2 years ago

What is the solution of the equation? Eliminate any extraneous solutions √3x + 28 - 8 = x

Mathematics

1 answer:

Alecsey [184]2 years ago

6 0

The answer to the solution is x=43+√249/2

I hope this helps.

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Need help !!!Divide 5a^2 + 6a - 9 into 25a^4 + 19a^2 - a - 78.

lana [24]

Hello,

Maybe i have not understood "into".

$\dfrac{25a^4+19a^2-a-78}{5a^2+6a-9} =5a^2-6a+20+ \dfrac{-175a+102}{5a^2+6a-9}$

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2 years ago

In a flight of 600 km, the speed of the aircraft was slowed down due to bad weather. The average speed of the trip was decreased

UkoKoshka [18]

The average speed would be 600 km/hr.

Step-by-step explanation:

Let the original speed be 'x'

Let the decreased speed be 'x-200'

Distance = 600 km

Time increased by 30 minutes

According to question, it becomes,

$\dfrac{600}{x-200}-\dfrac{600}{x}=\dfrac{30}{60}\\\\\dfrac{x-(x-200)}{x^2-200x}=\dfrac{1}{2\times 600}\\\\\dfrac{200}{x^2-200x}=\dfrac{1}{1200}\\\\240000=x^2-200x\\\\x^2-200x-240000=0\\\\x=600,-400$

So, The average speed would be 600 km/hr.

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2 years ago

Roberto is having his house painted. The job takes three days, and he pays the painter the same hourly rate

Lapatulllka [165]

Answer:

60 dollars per hour

7 0

2 years ago

sam and his three friends each want a 3 pieces of chicken. they are 98 cents apiece. a $9.99 bucket contains 12 pieces, plus 4 b

11Alexandr11 [23.1K]

Answer:

Buy the bucket.

Step-by-step explanation:

98¢ x 3 = $2.94

98¢ x 12 (12 pieces in bucket) = $11.79

Sam and his three friends are better off buying the Bucket of chicken.

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2 years ago

What is 77.5 as a fraction?

butalik [34]

77.5 would convert to 77 1/2. You have 77 whole pieces, and then a half. You could put any fraction for the half part, as long as it is HALF.
For example, you could also do:
77 5/10
77 6/12
77 2/4
77 10/20

3 0

2 years ago