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melisa1 [442]
4 years ago
14

I need help with this

Mathematics
2 answers:
artcher [175]4 years ago
8 0
Ok so you have to make the denominators the same so you would multiply the 3  by the 7 to get 21 and then you would do the same to the 2 and then you can subtract i hope i can help 
worty [1.4K]4 years ago
3 0
You have to make the denominators the same so you would multiply the three by seven to get 21 and then you would do the same to two and then you can subtract
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Question number 7 Give a reasonable domain and range for the function in this context
alina1380 [7]

Answer: D: [0, ∞)  

              R: [0, ∞)

Step-by-step explanation:

f(x) = 1.5x

  • x is the number of bottles
  • f(x) is the cost

Domain is the x-values.  The least amount of bottles you can buy is 0 and the most you can buy is infinite <em>(technically you can only buy the amount you can afford and the amount the store has to sell but for mathematical purposes you can buy an infinite amount)</em>

So, the domain (D) is x = 0 to ∞ → D: [0, ∞)

Range is the y-values. The least and most amounts are based on the domain. Since the smallest x-value is 0, input that value into the equation to solve for f(x).  Similarly, input the greatest x-value to solve for f(x).

f(x) = 1.5(0)

     = 0

f(x) = 1.5(∞)

     = ∞

So, the range (R) is f(x) = 0 to ∞ → R: [0, ∞)

3 0
4 years ago
The equation of a circle is
sergij07 [2.7K]

Answer:

The answer is

<h3>center = ( - 7 , - 1)</h3><h3>radius = 6</h3>

Step-by-step explanation:

The general equation of a circle is given by

<h3>x² + y² + 2gx + 2fy + c = 0</h3>

where the center of the center of the circle is given by

<h3>( - g , - f)</h3>

From the question the equation is

x² + y² + 14x + 2y + 14 = 0

Comparing with the general equation above we have

2g = 14 2f = 2

g = 7 f = 1 c = 14

So the center of the circle is

<h3>( - 7 , - 1)</h3>

The radius of a circle is given by

r =  \sqrt{ {g}^{2}  +  {f}^{2}  - c}

where

g = 7

f = 1

c = 14

Substitute the values into the above formula

That's

r =  \sqrt{ {7}^{2}  +  {1}^{2} - 14 }  \\ r =  \sqrt{49 + 1 - 14}  \\ r =  \sqrt{36}

we have the final answer as

<h3>radius = 6</h3>

Hope this helps you

5 0
3 years ago
Green
lisov135 [29]

Answer:

1/8 or .125

Step-by-step explanation:

There's only 8 sheets and 1 of them is green.

7 0
3 years ago
Simplify (1+3)2-10÷2<br> what the solution?
Sauron [17]

Answer:

3

Step-by-step explanation:

(1+3)2-10÷2

1+3=4

4x2=8

10÷2=-5

8-5=3

6 0
3 years ago
Kareem has $20,000 in his savings account that earns 5% annually. How much interest will he earn in one year?
siniylev [52]

Answer:

1000

Step-by-step explanation:

5% of my 20000 is 1000 so 21000 total or 1000 anually

7 0
3 years ago
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