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bulgar [2K]
3 years ago
11

How do I solve this problem? Please show me!

Mathematics
1 answer:
Troyanec [42]3 years ago
4 0

9514 1404 393

Answer:

   arc AB = 12.4 cm

Step-by-step explanation:

The length of arc AB is 1/4 of the circumference of the circle, so is ...

  AB = (1/4)(2πr)

  = (π/2)r = (3.14/2)(7.9 cm) = 12.403 cm

Rounded to the nearest tenth, arc AB = 12.4 cm.

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When looking at the rational function f of x equals the quantity x minus one times the quantity x plus two times the quantity x
Sophie [7]

\Large f(x) = \frac{(x - 1)(x + 2)(x + 4)}{(x + 1)(x - 2)(x - 4)}<span>

\Large f(x) = \frac{(x - 1)(x + 2)(x + 4)}{(x + 1)(x - 2)(x - 4)}

\Large f(x) = \frac{(x - 1)(x + 2)(x + 4)}{(x + 1)(x - 2)(x - 4)}

\Large f(x) = \frac{(x - 1)(x + 2)(x + 4)}{(x + 1)(x - 2)(x - 4)}

\Large f(x) = \frac{(x - 1)(x + 2)(x + 4)}{(x + 1)(x - 2)(x - 4)}</span>

 

Bella says that the function is defined at x = –1, x = 2, and x = 4 so Bella is wrong since the result is undefined because we cannot divide by zero Therefore, Edward is correct.

3 0
3 years ago
Which of the following graphs shows the set of points that represents the number of hours that Leah
san4es73 [151]

Answer:

I think it’s A,C, and E

Step-by-step explanation:

I’m not for sure but if you plot those points in the shaded region for graph C, those should be correct .

7 0
3 years ago
PLEASE HELP ASAP!!!
Dimas [21]

Step-by-step explanation:

5x^2+2x=1

5x^2+2x-1=0

x=-b+/-√b^2-4ac÷2a

x=-2+/-√-2^2-(4×5×-1)÷2×5

x=-2+/+√4--20÷10

x=-2+/-√24÷10

x=-2+√24÷10 or -2-√24÷10

x=-2+4.9÷10 or -2-4.9÷10

x=2.9÷10 or -6.9÷10

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4 0
3 years ago
Read 2 more answers
Simplify this expression <br> 2/3 (6c+9)−(8c−5)
Ludmilka [50]

Answer:

This is the right answer −4c+11

Step-by-step explanation:

3 0
3 years ago
What does the variable r represent in the equation 10r+4=8
Kryger [21]

Answer:

The value of variable r in the equation 10r+4=8 is \mathbf{r=0.4}

Step-by-step explanation:

We need to find the value of variable r in the equation 10r+4=8

Step 1: Write the equation

10r+4=8

Step 2: Subtract 4 on both sides

10r+4-4=8-4\\10r=4

Step 3: Divide both sides by 4

\frac{10r}{10}=\frac{4}{10}\\r=0.4

So, The value of variable r in the equation 10r+4=8 is \mathbf{r=0.4}

3 0
3 years ago
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