1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
asambeis [7]
2 years ago
11

SIMPLIFY THE EXPRESSION... PLEASE HELP :(

Mathematics
2 answers:
erastova [34]2 years ago
8 0

remember \frac{\frac{a}{b}}{\frac{c}{d}}=(\frac{a}{b})(\frac{d}{c})=\frac{ad}{bc}

try to combine fractions in numerator and denomenator

numerator: \frac{1}{x}+\frac{2}{y}

make common denom

multiply left one by \frac{y}{y} and right one by \frac{x^2}{x^2}

\frac{y}{yx^2}+\frac{2x^2}{yx^2}=\frac{2x^2+y}{yx^2}

denomenator

\frac{5}{x}-\frac{6}{y^2}

make common denom

multiply left one by \frac{y^2}{y^2} and right one by \frac{x}{x}

\frac{5y^2}{xy^2}-\frac{6x}{xy^2}=\frac{5y^2-6x}{xy^2}


combining we get

\frac{\frac{1}{x^2}+\frac{2}{y}}{\frac{5}{x}-\frac{6}{y^2}}=

\frac{\frac{2x^2+y}{yx^2}}{\frac{-6x+5y^2}{xy^2}}=

(\frac{2x^2+y}{yx^2})(\frac{xy^2}{-6x+5y^2})=

\frac{2x^3y^2+xy^3}{-6x^3y+5x^2y^3}=

(\frac{2x^2y+y^2}{-6x^2+5xy})(\frac{xy}{xy})=

(\frac{2x^2y+y^2}{-6x^2+5xy})(1)=

\frac{2x^2y+y^2}{-6x^2+5xy}

EastWind [94]2 years ago
8 0

<u>Answer:</u>

The simplified version of the given expression is (\frac{2x^2y+y^2}{5xy-6x^2} )

<u>Step-by-step explanation:</u>

We are given an expression which is a complex fraction:

\frac{\frac{1}{x^2} +\frac{2}{y} }{\frac{5}{x} +\frac{6}{y^2} }

We can take LCM of these fractions to get:

\frac{\frac{y+2x^2}{x^2y} }{\frac{5y^2-6x}{xy^2} }

Taking the reciprocal of the lower fraction to change it to multiplication:

\frac{y+2x^2}{x^2y} × \frac{xy^2}{5y^2-6x}

\frac{2x^2y+xy^3}{5x^2y^3-6x^3y}

Taking xy as common from both the numerator and the denominator to get:

\frac{xy}{xy} (\frac{2x^2y+y^2}{5xy-6x^2} )

(\frac{2x^2y+y^2}{5xy-6x^2} )

You might be interested in
Evaluate the expression for w= - 9<br> 2(w+3)=​
lara [203]

Answer:

2(-9+3) = -12

8 0
3 years ago
Read 2 more answers
An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 51% of passengers have no c
Orlov [11]

Answer:

The average revenue per passenger is about $13.85

μ = $13.85

The corresponding standard deviation is $14.51

σ = $14.51

The airline should expect revenue of $1,662 with a standard deviation of $14.51 for a flight of 120 passengers.

Expected revenue = $1,662 ± 14.51

Step-by-step explanation:

An airline charges the following baggage fees:

$25 for the first bag and $35 for the second

Suppose 51% of passengers have no checked luggage,

P(0) = 0.51

33% have one piece of checked luggage and 16% have two pieces.

P(1) = 0.33

P(2) = 0.16

a. Build a probability model, compute the average revenue per passenger, and compute the corresponding standard deviation.

The average revenue per passenger is given by

μ = 0×P(0) + 25×P(1) + 35×P(2)

μ = 0×0.51 + 25×0.33 + 35×0.16

μ = 0 + 8.25 + 5.6

μ = $13.85

Therefore, the average revenue per passenger is about $13.85

The corresponding standard deviation is given by

σ = √σ²

Where σ² is the variance and is given by

σ² = (0 - 13.85)²×0.51 + (25 - 13.85)²×0.33 + (35 - 13.85)²×0.16

σ² = 97.83 + 41.03 + 71.57

σ² = 210.43

So,

σ = √210.43

σ = $14.51

Therefore, the corresponding standard deviation is $14.51

b. About how much revenue should the airline expect for a flight of 120 passengers? With what standard deviation?

For 120 passengers,

Expected revenue = 120×$13.85

Expected revenue = $1,662 ± 14.51

Therefore, the airline should expect revenue of $1,662 with a standard deviation of $14.51 for a flight of 120 passengers.

6 0
2 years ago
Find the surface area of the sphere with the given dimension. Leave your answer in terms of pi.
Brrunno [24]
The surface area of the sphere:
A = 4 r² π 
1 ) r = 60 m;
A = 4 · 60² π = 4 · 3600 π = 14,400 π m²
2 ) Diameter of 14 cm:
r = 14 cm / 2 = 7 cm
A = 4 · 7² π = 4 · 49 π = 196 π cm²
5 0
3 years ago
What is the height of a wall 28 ft long that requires 1568 feet long
inysia [295]

ωєℓℓ αℓℓ уσυ нανє тσ ∂σ ιѕ ∂ινι∂є 1,568 ву 28

ωнι¢н ωιℓℓ єqυαℓ тнє ωαℓℓ тσ вє 56 fєєт.

ι нσρє ι ¢συℓ∂ нєℓρ уσυ

3 0
2 years ago
Read 2 more answers
a motorcycle cost $12,000 when it was purchased. the value of a motorcycle decreases by 6% each year. find the rate of decay eac
kiruha [24]
There's 12 months in a year so if the value decreases by 6% each year that would be 6 ÷ 12 which is 0.5%. Therefore the decay each month is -0.5%.
5 0
2 years ago
Other questions:
  • Credit card buying has become an important part of the economy of the United States.
    8·2 answers
  • I need help please asap
    12·1 answer
  • if an amount of $100 in a savings account increases by 10% , then increases by 10% again, is that the same as increasing by 20%
    9·2 answers
  • When adding or subtracting with scientific notation,why is it important to have the same power of 10?
    9·1 answer
  • Rayne sold 3 desks at the local trade show. He paid $4.00 to rent the booth. He gave half of his revenue to the carpenter and wa
    13·1 answer
  • A sequence is recursively defined by f(1)=3,f(n)=2* f(n-1) for n &gt;=2. Write the equation for the nth term
    11·1 answer
  • Penny buys 3 bouquets of flowers for $3 each and 4 bouquets for $2 each. Which expression gives the total cost of the bouquets t
    8·2 answers
  • -2/5x - 9 &lt; 9/10<br><br> Show work used to solve please :)
    6·1 answer
  • Find the length of side AB. Round your answer to the nearest tenth:
    15·1 answer
  • Two fair coins are to be tossed once. For each head that results, one fair die is to be rolled. What is the probability that the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!