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4 years ago

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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Find ML K 2x+5 M 5x-4

pashok25 [27]

Answer:

7x?

Step-by-step explanation:

5 0

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 s is the speed of the object and t is the time it takes the object to change its speed $s_1$ to the speed $s_2$

In this case we have that:

$t_2-t_1 = 5\ sec$

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

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

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

$a =111.1\ m/s^2$

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)
Value of a + b = 2 1/3

Difference = 3 - 2 1/3
Difference = 2/3

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Answer: They are 2/3 unit apart
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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