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anzhelika [568]
3 years ago
14

I need help solving this question please :)

Mathematics
1 answer:
dsp733 years ago
3 0

Answer:

um can you pleasee take a clearer picture thankyou I cant see the things inside the circle properly

Step-by-step explanation:

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A circle is centered at the point (-7,-1) and passes through the point (8, 7). The radius of the circle is ___ units. The point
trapecia [35]

Answer:

(x + 7)2 + (y + 1)2 = r2.

To get we use point (8, 7): (8 + 7)2 + (7 + 1)2 = r2, r2 = 225 + 64 = 289 = 172.

So, equation of circle: (x + 7)2 + (y + 1)2 = 289

Step-by-step explanation:

5 0
2 years ago
Write the equation of a line perpendicular to 5x−9y=−8 that passes through the point ​(−5​,8​).
Fantom [35]

Answer:  y = -(9/5)x - 1

Step-by-step explanation:

Rewrite the equation in standard form:  y = (5/9)x+(8/9).  [y=mx+b]

A line perpendicular to this would have a slope that is the negative inverse of the original slope (5/9), which would make it -(9/5).  The y-intercept would also change, but we don't know the value, yet.  For now, we'll use "b" for the y-intercept.  This results in a perpendicular line:

y = -(9/5)x + b

We can calculate b, the y-intercept, by using the point (-5,8) and solving for b.

8 = -(9/5)*(-5) + b

8 = (9) + b

b = -1

The line perpendicular to 5x−9y=−8 that passes through the point ​(−5​,8​) is

y = -(9/5)x - 1

7 0
3 years ago
In a game of tug of war, your team changes -2 1/2 feet in position every 10 seconds. What is your change in position after 40 se
Airida [17]
The answer is -10

-2 1/2 x 4 = -10
8 0
3 years ago
You are riding a roller coaster when a shoe falls off your foot. The function y=200−16t^2 represents the height y (in feet) of t
pickupchik [31]
A graphing calculator shows it takes 3.25 seconds for the shoe to hit the building.

_____
200 -16t^2 = 31
169 = 16t^2
√(169/16) = t
t = 13/4 = 3 1/4

6 0
3 years ago
Write the letter of every special quadrilateral that has the given property. (I will give brainliest)
kifflom [539]

look it up hare

sorry if it's not what your looking for

7 0
3 years ago
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