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Goryan [66]
3 years ago
12

PLEASE HELP! IM ALMOST DONE !

Mathematics
1 answer:
maksim [4K]3 years ago
3 0

Answer:

D. \frac{22x + 48}{x^2 - 36}

Step-by-step explanation:

Given:

\frac{15}{x - 6} + \frac{7}{x + 6}

Required:

Find its equivalent expression

Solution:

Add both fractions

Thus,

\frac{15}{x - 6} + \frac{7}{x + 6}

\frac{15(x + 6) + 7(x - 6)}{x^2 - 36}

\frac{15x + 90 + 7x - 42}{x^2 - 36}

\frac{15x + 7x + 90 - 42}{x^2 - 36}

\frac{22x + 48}{x^2 - 36}

Therefore,

\frac{15}{x - 6} + \frac{7}{x + 6} = \frac{22x + 48}{x^2 - 36}

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What's the answer to this
White raven [17]

Step-by-step explanation:

the angle CDB is the supplementary angle to 9x+10 (angle ADC).

that means they stand together for 180°. as all angles around a single point on one side of a line are together always 180°.

and then, the sum of all angles in a triangle is always 180°.

so,

CDB + (4x + 10) + 50 = 180

CDB = 180 - (9x + 10) = 180 - 9x - 19 = 170 - 9x

therefore,

(170 - 9x) + (4x + 10) + 50 = 180

170 - 9x + 4x + 10 + 50 = 180

-5x = -50

5x = 50

x = 10

angle CDB = 170 - 9x = 170 - 90 = 80°

4 0
2 years ago
NEED HELP ASAP. I don not understand why I'm wrong. What is the right answer???
hammer [34]

Answer:

<u>Answer</u><u>:</u><u> </u><u>3</u><u>5</u><u>/</u><u>1</u><u>8</u>

Step-by-step explanation:

\frac{ \{ \frac{3}{4} -  \frac{5}{2}  \} }{ \{ \frac{3}{5}  -  \frac{3}{2}  \}}   =  \frac{( -  \frac{7}{4} )}{ (-  \frac{9}{10} )}  \\  \\   =  \frac{7}{4}  \div  \frac{9}{10}

use the reciprocal of 9/10 :

=  \frac{7}{4}  \times  \frac{10}{9}  \\  \\  =  \frac{35}{18}

6 0
3 years ago
Read 2 more answers
Determine if the graph shows two quantities that vary directly. If possible, determine the constant of proportionality using the
tia_tia [17]

Answer:

Option C is correct option.

Step-by-step explanation:

We need to find k constant of proportionality

In the graph below let us take the values of x and y

x=150 , y=50

x=300, y=100

x=450, y=150

Now finding k using the formula: k=\frac{y}{x}

Putting values of x and y to find k

For x=150 , y=50 k = 50/150, k =1/3

For x=300, y=100 , k=100/300 , k=1/3

For x=450, y=150, k= 150/450 , k=1/3

Since for values of x and y, k = 1/3 is constant so, the graph shows two quantities that vary directly.

So, Option C is correct option.

5 0
3 years ago
The original price of a video game is $45. What is the sale price after a 25% discount.​
Ghella [55]

Answer:

33.75

Step-by-step explanation:

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joja [24]

Answer:

Step-by-step explanation:

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$1500 spending money

7 0
4 years ago
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