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oee [108]
4 years ago
5

Simplify the expression

Mathematics
2 answers:
ivanzaharov [21]4 years ago
8 0

Answer:

B.

Step-by-step explanation:

hope this helped

stay safe

brainliest is appreciated only 1more to level up please help :)))

EleoNora [17]4 years ago
6 0

Answer:

D

Step-by-step explanation:

\frac{\frac{b^{2}+5b+6}{3bc}}{\frac{b^{2}-9}{6bc}}\\\\=\frac{b^{2}+5b+6}{3bc}*\frac{6bc}{b^{2}-9}\\\\=\frac{(b+3)*(b+2)}{3bc}*\frac{6bc}{b^{2}-3^{2}}\\\\=\frac{(b+3)*(b+2)}{3bc}*\frac{6bc}{(b+3)(b-3)}\\\\=\frac{(b+2)*2}{(b-3)}\\\\=\frac{2(b+2)}{(b-3)}\\

Hint: b ²+ 5b + 6 = b² + 3b + 2b + 2*3

                          = b*(b + 3) + 2*(b + 3)

                         = (b + 3) (b + 2)

x² - y² = (x  + y)(x - y)

b² - 9 = b² - 3² = (b + 3) (b -3)

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NEED HELP with this word problem ASAP!
Natali5045456 [20]

Answer:

t=280\ minutes

Step-by-step explanation:

Let's call "v" the speed of the commercial airplane and call "t" at the travel time of the commercial plane

The distance in kilometers of the trip is: 1730 km

Then we know that:

vt=1730

Then for the jet we have that the speed is:

2v

The flight time for the jet is:

t-140

Therefore:

(2v)(t-140) = 1730

Substituting the first equation in the second we have to:

(2*\frac{1730}{t})(t-140) = 1730

(\frac{3460}{t})(t-140) = 1730

3460-\frac{484400}{t} = 1730

Now solve for t

\frac{484400}{t} = 3460 - 1730

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\frac{t}{484400} =\frac{1}{1730}

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8 0
4 years ago
-2n +15=n-60
RideAnS [48]

Answer:

n = 25

Step-by-step explanation:

-2n + 15 = n - 60

Subtract 15 to both sides

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8 0
4 years ago
Read 2 more answers
Which of the following shows the equation y = x2 + 8x + 14 in vertex form?
Musya8 [376]
Y=x²+8x+14
to make a square, if a is 1, add (half of b)²
in this case, a=1, b=8, half of 8 is 4
y=x²+8x+4²-4²+14
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B is the answer.

another way to do it:
the vertex is at x=-b/2a=-8/2*1=-4
when x=-4, y=(-4)²+8(-4)+14=-2
so the equation is y=[x-(-4)]²-2, which is y=(x+4)²-2, the same answer B
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4 years ago
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12345 [234]
The answer to your question is C.
3 0
3 years ago
WHAT DO I DO WHEN I FAILED A ALGEBRA TEST
Delicious77 [7]

Answer:

Restudy and try to take it again.

Step-by-step explanation:

Try watching math videos and do extra studying on the areas you missed on your last attempt.

5 0
3 years ago
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