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emmasim [6.3K]
3 years ago
12

Find the difference:

Mathematics
2 answers:
marishachu [46]3 years ago
8 0

Answer:

Option 1st is correct

\frac{9}{x-1}

Step-by-step explanation:

To find the difference of :

\frac{x+1}{x-1}-\frac{x-8}{x-1}

Since, the denominator are same.

⇒LCM = x -1

then;

\frac{(x+1)-(x-8)}{x-1}

⇒\frac{x+1-x+8}{x-1}

Combine like terms;

⇒\frac{9}{x-1}

Therefore, the difference of \frac{x+1}{x-1}-\frac{x-8}{x-1} is, \frac{9}{x-1}

brilliants [131]3 years ago
3 0
The answer is A

Sine you are subtracting,
x-x=o
1- -8 =9 since subtracting a negative is adding a positive.
So the answer is 9/x-1
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A truck can be rented from Company A for ​$70 a day plus ​$0.20 per mile. Company B charges ​$20 a day plus ​$0.40 per mile to r
Otrada [13]

Answer:

For Company A to have a better deal, the truck must be driven more than 250 miles per day.

Step-by-step explanation:

Given that:

Rent per day of company A = $70

Per mile charges = $0.20

Let,

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A(x) = 0.20x + 70

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Per mile charges = $0.40

B(x) = 0.40x + 20

For make Company A better deal,

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\frac{-0.20x}{-0.20}>\frac{-50}{-0.20}\\x>250

Hence,

For Company A to have a better deal, the truck must be driven more than 250 miles per day.

8 0
3 years ago
Find the measure of m∠K
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Length: 21 cm and Width:  6cm

Step-by-step explanation:

Let y be the width and x length of the rectangle. We know:

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Substitute equation 1 in equation 2:

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Using the value of y, we find x.

x = 4y - 3\\x = 4(6) -3\\x= 24 - 3\\x = 21

4 0
3 years ago
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