1 year ago

(2/7 , −3) ; r = 6 standard form of circle

1 answer:

7 0

The graph of a circle is completely determined by its center and radius. Standard form for the equation of a circle is (x−h)2+(y−k)2=r2. The center is (h,k) and the radius measures r units.

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Hi, can somoene please check why my solution and explain why I get the wrong answer.

trapecia [35]

Answer:

$a_n=(1-n)2^n+3^n$

Step-by-step explanation:

You are correct down to the part where you add the partial results:

$a_n=a_n^h+a_n^p=A3^n+B2^n-n2^n\\\text{Using the given starter values, we can find A, B:}\\a_0=2=A\\a_1=7=3A+2B+2\\\text{has solution A=1, B=1, so ...}\\\\a_n=3^n+2^n-n2^n$

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3 years ago

Evaluate the expression for s = -15. -S=

Oxana [17]

Answer:

-S = 15

Step-by-step explanation:

You are asked to find the opposite of the given value.

<h3>Opposite</h3>

The opposite of an integer value is obtained by changing its sign.

S = -15

-S = -(-15) = 15

<em>Additional comment</em>

Equivalently, you are multiplying by -1. The product of an even number of minus signs is a plus sign. We usually don't write the plus sign for a numerical value.

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Ashley bought 6 yds of ribbon for $5.28. What ratio is proportional to this?

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Y=2/3x-1 ×=-6,-3,0,3

Y_Kistochka [10]

Answer:

y=-5,-3,-1,1 are value for y