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3 years ago

What is the sum of the rational expression below? 3x/x+2 + x/x+4

Mathematics

2 answers:

ahrayia [7]3 years ago

8 0

Answer: 4x^2 + 14x / x^2 + 6x + 8

Step-by-step explanation: A P E X

Darya [45]3 years ago

7 0

Ans

Step-by-step explanation:

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Solve by completing the square. x^2 + 4x – 1= 0

NNADVOKAT [17]

Answer:

x = -2 ± sqrt(5)

Step-by-step explanation:

x^2 + 4x – 1= 0

Add 1 to each side

x^2 + 4x – 1+1= 0+1

x^2 +4x = 1

Take the coefficient of x

Divide by 2

4/2 =2

Square it

2^2=4

Add it to each side

x^2 +4x+4=1+4

(x+2)^2 = 5

Take the square root of each side

sqrt((x+2)^2 )=± sqrt(5)

x+2 = ± sqrt(5)

Subtract 2 from each side

x+2-2 = -2 ± sqrt(5)

x = -2 ± sqrt(5)

8 0

3 years ago

Which of these is a speed?

miskamm [114]

Answer:

50 miles per hour

Step-by-step explanation:

First one is a distance

Second one is time

Last one doesn't make sense

8 0

3 years ago

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What are the roots of the quadratic function in the graph?

k0ka [10]

The answer would be B) -5, 3. The roots can be found where the graph crosses the x-axis, which on this graph is -5 and 3.

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3 years ago

Orders for a computer are summarized by the optional features that are requested. The proportion of orders with no optional feat

Scorpion4ik [409]

Answer:

(a) 71.00%

(b) 63.00%

Step-by-step explanation:

No optional features = 0.29

One feature = 0.34

Two features = 0.37

(a) The probability that an order requests at least one optional feature is 100% minus the probability of an order requesting no optional features:

$P=1-0.29=0.71=71.00\%$

(b) The probability that an order does not request more than one optional feature is 100% minus the probability of an order requesting two optional features:

$P = 1 -0.37=0.63 = 63.00\%$

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3 years ago

How does knowing 8+5=13 help you solve 13-5?

amid [387]

Answer:

Fact Families

Step-by-step explanation:

They are fact families

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3 years ago

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