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ololo11 [35]
4 years ago
10

A circle has center (5. --4) and radius 8. Which gives the equation for the circle?

Mathematics
1 answer:
Tju [1.3M]4 years ago
4 0

Answer:

(x-5)^2 + (y+4)^2 =64

Step-by-step explanation:

We can write the equation of a circle as

(x-h)^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

(x-5)^2 + (y- -4)^2 = 8^2

(x-5)^2 + (y+4)^2 =64

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Answer:

7x?

Step-by-step explanation:

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3 years ago
A fish is swimming at 500 KM/hour and suddenly as shark appears behind, for 5 seconds the fish is swimming in the same direction
trasher [3.6K]

Answer:

a =111.1\ m/s^2

Step-by-step explanation:

The formula to calculate the average acceleration is:

a =\frac{s_2-s_1}{t_2-t_1}

Where <em>s</em> is the speed of the object and <em>t </em>is the time it takes the object to change its speed s_1 to the speed s_2

In this case we have that:

t_2-t_1 = 5\ sec

s_1 = 500\ km/h = 500*\frac{1\ h}{3600\ s}*\frac{1000\ m}{1\ km}=138.89\ m/s

s_2= 2500\ km/h = 2500*\frac{1\ h}{3600\ s}*\frac{1000\ m}{1\ km}=694.44\ m/s

a =\frac{694.44-138.89}{5}\ m/s^2

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5 0
4 years ago
34.
OlgaM077 [116]

Answer:

Step-by-step explanation:

Let Naomi's wage = £ x

Reduction in wage = 10% of x = 0.1 *x = 0.1x

x - 0.1x = 252

0.9x = 252

  x = 252/0.9

    = \dfrac{252*10}{0.9*10}=\dfrac{2520}{9}

     = £ 280

Weekly wage if she had received 10% pay increase

Increment = 10% of 280 = 0.1*280 = 28

Weekly wage after increment = 280 +28 = £ 308

5 0
3 years ago
If the value of a is 3, and the value of b is -2/3, how far apart will a and a + b be on a number line?
klasskru [66]
Value of a = 3

Value of a + b = 3 + (-2/3)
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Difference = 3 - 2 1/3
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Answer: They are 2/3 unit apart
--------------------------------------------------
8 0
3 years ago
Which of the following is an open statement?
ANTONII [103]
I think the last one because a open statement contains at least one blank that becomes true or false when it’s filled in if you fill x with 4 you will get 3(4) 3*4=13 so if that blank was filled in with 4 it would be true
6 0
3 years ago
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