3 years ago

(20 points)

Mathematics

1 answer:

-Dominant- [34]3 years ago

8 0

Answer:

Option 3

Option 4

Option 6

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Solving Rational equations. LCD method. Show work. Image attached.

Ugo [173]

Answer:

$k=\frac{1}{2}$

Step-by-step explanation:

The given rational equation is

$\frac{5k}{k+2}+\frac{2}{k}=5$

The Least Common Denominator is

$k(k+2)$

Multiply each term by the LCD.

$k(k+2)\times \frac{5k}{k+2}+k(k+2)\times \frac{2}{k}=5k(k+2)$

Simplify;

$k\times \frac{5k}{1}+(k+2)\times \frac{2}{1}=5k(k+2)$

$\Rightarrow k(5k)+2(k+2)=5k(k+2)$

Expand;

$\Rightarrow 5k^2+2k+4=5k^2+10k$

Group similar terms;

$\Rightarrow 5k^2-5k^2+2k-10k=-4$

$\Rightarrow -8k=-4$

Divide by -8.

$k=\frac{1}{2}$

5 0

3 years ago

Whats 5678 divided by 45.7

ddd [48]

5678 divided by 45.7 is 124.245...

3 0

3 years ago

Read 2 more answers

(please show work!!!)

dmitriy555 [2]

The variable “x” can be defined as the price of regular gas.
The equation is x = x - (.02)7
x = x - (.02)7
(.02)7 = .14
x = x - .14
X - X = nothing so it just leaves you with -.14
The answer is that the gas price changed by a total of - 14 cents or -0.14

7 0

3 years ago

Can anyone help with this?

Rufina [12.5K]

Answer:

Second option is the right choice.

Step-by-step explanation:

SSS.

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3 years ago

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Express 33 1/2% as fraction<br><br>

zzz [600]

First you have to multiply 2x33 which is 66 then you have to add 1 which is 67 so the answer would be 67/2 I don’t know about the percent sign though

8 0

3 years ago