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marysya [2.9K]
2 years ago
6

Heyy does anybody know khanacademy??

Mathematics
1 answer:
Stels [109]2 years ago
5 0

yeah. I did it junior year. I didnt enjoy it.

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The end points of a diameter of a circle are (6,2) and (-4,7).
nata0808 [166]

Answer:

Step-by-step explanation:

The standard form equation of a circle with radius r is expressed as

( x − h )^2 + ( y − k )^2 =r ^2 ,

where r represents the radius

h and k are the coordinates of the center of the circle C( h , k )

To determine the coordinates at the center of the circle, the midpoint formula would be used. It is expressed as

[(x1 + x2)/2 , (y1 + y2)/2]

Midpoint of the circle =

(6 - 4)/2 , (2 + 7)/2 = (1, 4.5)

h coordinate of the center = 1

k coordinate of the center = 4.5

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

r^2 = (6 - 1)^2 + (2 - 4.5)^2

r^2 = 5^2 + (- 2.5)^2 = 25 + 6.25

r^2 = 31.25

Substituting r^2 = 31.25, h = 1 and k = 4.5 into (x − h )^2 + ( y − k )^2 = r^2, the standard equation of the circle becomes

(x − 1 )^2 + ( y − 4.5 )^2 = 31.25

8 0
3 years ago
The length of a Rectangle is 5/6 feet. The width is 3/8 feet.
kicyunya [14]

Answer:

C) 11/24

Step-by-step explanation:

rewrite each fraction as equivalent fraction with common denominator.

LCM(6,8) is 24

5/6 = 20/24

3/8 = 9/24

The difference between 20/24 and 9/24 is 11/24

3 0
3 years ago
Read 2 more answers
Use the function below to find F(2).<br> F(t) = 2•1/2^3t
navik [9.2K]

Answer:

F(2)= \frac{1}{32}

Step-by-step explanation:

The given function is

F(t) = 2 \cdot \:  \frac{1}{{2}^{3t} }

To find F(2), we substitute t=2 into the function.

This means that wherever we see t, we put 2

F(2) = 2 \cdot \:  \frac{1}{{2}^{3 \times 2} }

We multiply the exponent in the denominator to get:

F(2) = 2 \cdot \:  \frac{1}{{2}^{6} }

We evaluate to get:

F(2) = 2 \cdot \:  \frac{1}{64}

We now cancel the common factors to get:

F(2) = \frac{1}{32}

6 0
3 years ago
What’s the answer (number 5)
sineoko [7]
80 x 3/10 = 240/10 = 24 times
6 0
3 years ago
A number from 1 to 100, inclusive, is selected at random. What is the probability that the
Gala2k [10]

Answer:i might be wrong but i believe its b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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