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Kamila [148]
3 years ago
8

Which of the following is the product of the rational expressions shown below? 3/x+7 x 4/x

Mathematics
2 answers:
kow [346]3 years ago
6 0

Answer:

12/ x^2+7x

Step-by-step explanation: Took the test and got it right

kotykmax [81]3 years ago
4 0

Answer:

31/x

Step-by-step explanation:

im assuming thats a 7*

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Find the value of r so that the line through (8,r) and (4,5) has a slope of -4
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Answer:

r = - 11

Step-by-step explanation:

Calculate the slope m using the slope formula and equate to - 4

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (4, 5) and (x₂, y₂ ) = (8, r)

m = \frac{r-5}{8-4} = \frac{r-5}{4} = - 4 ( multiply both sides by 4 )

r - 5 = - 16 ( add 5 to both sides )

r = - 11

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2 years ago
Granite counter tops cost $40 for every square foot. The base pay to install the counter top is $750. Set up a Linear Model repr
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Answer: y = 40x + 750

Step-by-step explanation:

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y = mx + c

y is the total cost of buying granite counter tops for a certain number of square foot as well as the cost to install the counter top.

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x is the number of square feet required.

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Linear model will therefore look like this;

y = 40x + 750

To test it. Assume you want enough granite tops for 10 square feet. How much would it cost;

= 40 (10) + 750

= $1,150

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