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Contact [7]
2 years ago
6

What are the center and the radius of a circle with the equation (x + 5)² + (y - 4)² = 81

Mathematics
1 answer:
Alexeev081 [22]2 years ago
6 0

Step-by-step explanation:

We know that if the equation of the circle is (x-h)^2 + (y-k)^2 = r^2, it has a center of (h,k) and a radius of r.

Matching this up with the given equation, we get the center is (-5, 4) and the radius is 9.

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Solve −4 = −(−k − 86)+10
kvasek [131]
K= 100
 
You use distributive property 
<span>
Step 1: </span><span>−(−k)−1(−86)+10=−4

Step 2: </span><span>k−1(−86)+10=−4

Step 3: </span><span>k+86+10=−4

Step 4: </span><span>k+96=−4

Step 5:  </span><span>k=−96−4

Step 6:  </span><span>Subtract </span>4<span> from </span><span>−96</span><span> to get </span><span><span><span>−100</span>.</span></span>
3 0
3 years ago
Read 2 more answers
Select the polygon in which each interior angles measures less than 180
NemiM [27]
Algebra -> Polygons<span> -> SOLUTION: </span>Each exterior angle<span> is 100º </span>less than<span> its </span>interior angle<span> of ...</span>180<span>-x = </span>measure<span> of the corresponding </span>exterior angle<span> in degrees. </span>At each<span> vertex, there is an </span>interior angle<span> of </span>the polygon. ... The sum of the angles in those triangles (180+180<span>=360) is the same as the sum ... If a regular </span>polygon<span> has x sides, </span>then<span> the degree </span>measure<span>of </span>each exterior angle<span> is 360 divided by x.
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4 0
3 years ago
Is it linear or not? 2x+5xy-3=0.
ArbitrLikvidat [17]

The linear equation in slope intercept form: y = mx + b.

We have:

2x+5xy-3=0\qquad\text{subtract 2x from both sides}\\\\5xy-3=-2x\qquad\text{add 3 to both sides}\\\\5xy=-2x+3\qquad\text{divide both sides by}\ 5x\neq0\\\\y=\dfrac{-2x+3}{5x}

This is not a linear equation.

4 0
3 years ago
2 Points
In-s [12.5K]

Answer:

D. -3

Step-by-step explanation:

The table is:

x  |  y

-5 | 23

-2 | 14

 1 | 5

To find the slope, you need two points (x1, y1) and (x2, y2) and the next formula:

slope = (y2 - y1)/(x2 - x1)

Using (-2, 14) and (1, 5) (other combinations are also possible) the slope is:

slope = (5 - 14)/(1 - (-2)) = -3

8 0
3 years ago
What two number multply 8 and add to give 6
34kurt
4 and 2    
You multiply 4 and 2 to get 8. And you add 4 and 2 to get 6.
8 0
3 years ago
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