3 years ago

The equation of a circle is given below. 9 x^2+ (y - 7.5)^2 =9/49 What is its center?

Mathematics

1 answer:

My name is Ann [436]3 years ago

4 0

Answer:

(0, 7.5)

Step-by-step explanation:

Compare the equation to the standard-form equation of a circle:

(x -h)^2 +(y -k)^2 = r^2 . . . . . . . center at (h, k); radius r

You will notice that ...

h = 0

k = 7.5

The center is (h, k) = (0, 7.5).

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strojnjashka [21]

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3 years ago

4x-10=30 2n-7=30 S/3+2=4

emmasim [6.3K]

Answer:

x=10 n=18.5 s=6

Step-by-step explanation:

4x-10=30

Add 10 to both sides

4x-10+10=30+10

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(4x)/4=40/4

x=10

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(2n)/2=37/2

n=18.5

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Subtract 2 from both sides

(s/3)+2-2=4-2

(s/3)=2

Multiply by 3 on both sides

3s/3=2*3

s=6

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4 years ago

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3 years ago

If ∠ABE = 100° and ∠EDC = 100°, are the two triangles, ΔABE and ΔEDC similar? If so, by what criterion?

MAVERICK [17]

No
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Read 2 more answers

Find the un know value diameter= 9.8 circumfrence=? radius=? it is question of pie

Monica [59]

The radius is 4.9 and the Circumference is 9.8π

Step-by-step explanation:

Data:

Diameter = 9.8

Circumference = ?

Radius = ?

Radius

Radius is half of the diameter so radius = $\frac{diameter}{2}$

Radius = $\frac{9.8}{2}$

Radius = 4.9

Circumference

Circumference = 2πr

Circumference = 2π(4.9)

Circumference = 9.8π

Therefore, the radius is 4.9 and the Circumference is 9.8π

Keywords: Circumference

Learn more about circumference at

#LearnwithBrainly

8 0

3 years ago