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olganol [36]
2 years ago
6

Hello can someone please help me (with explanation ) how to do this thank you.............

Mathematics
1 answer:
tigry1 [53]2 years ago
6 0

Answer:

A 24 because half of 12 is 6 then 6 x 4 is 24

B 90÷3 is 30 which is 2/3 of 45

Hope this helps you

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Find the standard form of the equation of the circle with endpoints of a diameter at the points (3,8) and (-7,2)
poizon [28]

(x+2)^{2}+(y-5)^{2}= 34

The equation of a circle in standard form is

(x-a)^{2}+(y-b)^{2}=r^{2}

where (a , b) are the coordinates of the centre and r is the radius

The centre is at the midpoint of the endpoints and the radius is the distance from the centre to either of the 2 endpoints

Using the midpoint formula

midpoint = [\frac{1}{2}(xx_{1}+x_{2}, \frac{1}{2}(y_{1}+y_{2}

where (x_{1},y_{1}=(3,8) and (x_{2},y_{2}=(-7,2)

centre = (\frac{1}{2}(3-7),\frac{1}{2}(8+2)) = (-2,5)

Calculate r using the distance formula

r = √(x_{2}-x_{1})²+(y_{2}-y_{1})²)

= √((3+2)²+(8-5)²) = √(25+9) = √34 ⇒ r² =(√34)² = 34

equation of circle is : (x+2)²+(y-5)² = 34


8 0
3 years ago
Help Please.<br> .<br> .<br> .<br> .
Anika [276]

Answer:

angle 5 = angle 1

angle 6=angle 3

angle 2+angle 1+angle 3=180 degrees

angle 2+5+6=180 degrees

8 0
3 years ago
Sherry swam the length of the community pool 4 times. The pool is 32 feet long.   What is the total distance Sherry swam, measur
andriy [413]
32 x4 = 128 ft

128 x 12 = 1536

Final Answer: 1,536 inches

Hope this helps!! :)
8 0
3 years ago
Read 2 more answers
The answer below thanks
Greeley [361]

Answer:

The equation of the circle having centre (-5,-9) and radius r=3  is

x² + 10 x +y² + 14 y + 65 = 0

Step-by-step explanation:

<u>Explanation</u>:-

From graph  The centre of the circle  C( -5 , -7)

The radius of the circle r = 3cm from the centre of the given circle

The equation of the circle



From graph the centre ( h, k) = ( -5,-7) and r = 3cm

                 (x-(-5))^2+(y-(-7))^2 = 3^2

                x² + 10 x +25 +y² + 14 y + 49 =9

              x² + 10 x +25 +y² + 14 y + 49 -9=0

 The equation of the circle

                x² + 10 x  +y² + 14 y + 65 = 0  

 



                     

8 0
3 years ago
HELPP!!!! Is the first one right? and if not can u correct it also can u help me on the other ones plz!!!!???
SpyIntel [72]

Answer:

69 noice

Step-by-step explanation:

8 0
3 years ago
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