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AVprozaik [17]
3 years ago
15

Circle A has center of (4,5) and a radius of 3 and circle B has a center of (1,7) and a radius of 9. What steps will help show t

hat circle A is similar to circle B?
Mathematics
1 answer:
Vinil7 [7]3 years ago
3 0

Answer:  

Move the center of circle A to (1,7), then multiply its radius by 3.

Step-by-step explanation:

Moving the circles to the same center would make them concentric.  Then, by multiplying the radius of Circle A by 3, the circle is dilated to the exact size of circle B, since its radius is 9.  This shows that Circle B is proportional to Circle A, thus they are similar.  

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If he counts 76 feet, that means there’s 38 animals in total, because animals have 2 feet. 76/2=38

Hope that helps..!
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Find an equation for the nth term of the arithmetic sequence. <br><br> -20, -16, -12, -8, .
ollegr [7]
We are given with the sequence -20, -16, -12, -8. From this sequence, we can see that the arithmetic difference is +4, from -(-20 + 16). hence following the arithmetic formula of an = a1 + d *(n-1). Substituting, an = -20 + 4 *(n-1) where n is an integer 
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2 years ago
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Please help (20 points)
Evgesh-ka [11]

35.\\V=\dfrac{\pi r^2h}{3}\ \ \ \ |\cdot3\\\\3V=\pi r^2h\ \ \ \ |:\pi r^2\\\\\boxed{h=\dfrac{3V}{\pi r^2}}

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8 0
3 years ago
Urgent, please i will give brainliest
Ne4ueva [31]

Answer:

1. \frac{\sqrt{13} }{3}

2. 3.2362

3. \frac{60}{11}

Step-by-step explanation:

1.

Cot is the trigonometric ratio defined by "adjacent" over "opposite". <em>So, adjacent = 2 and opposite = 3.</em>

By pythagorean theorem, we have the "hypotenuse" as  \sqrt{2^2+3^2}=\sqrt{13}

Csc is defined as the trig ratio "hypotenuse" over "opposite". <em>We know the sides, so Csc \theta = \frac{\sqrt{13} }{3}</em>

<em />

<em>First answer choice is right.</em>

<em />

2.

By definition, Csc \theta is the inverse of Sine \theta. <em>If given the value of sin theta, to find value of csc theta, we take the reciprocal of it. Hence:</em>

Csc\theta=\frac{1}{0.3090}\\=3.2362

Third answer choice is right.

3.

By definition tan and cot are inverse of each other. <em>So the value of tan is the reciprocal of the value of cot.</em> We can simply "flip" the value of tan theta to get the value of cot theta. Hence:

Cot\theta=\frac{60}{11}

Third answer is right.

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3 years ago
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Answer:

I would go with the first one.

Step-by-step explanation:

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