All categories

2 years ago

A circle is centered at (5,-9) and has a radius of 12. Which of the following is the equation for this circle?

Mathematics

2 answers:

Nimfa-mama [501]2 years ago

7 0

Answer:

(x - 5)^2 + (y + 9)^2 = 144. is correct

Step-by-step explanation:

Ket [755]2 years ago

3 0

Answer:

Step-by-step explanation:

The general form for a circle is:

(x - a)^2 + (y - b)^2 = r^2

where (a, b) is the centre and r = the radius.

So here (a, b) = (5, -9) and r = 12 giving:

(x - 5)^2 + (y - (-9))^2 = 12^2

(x - 5)^2 + (y + 9)^2 = 144.

You might be interested in

Please Help! Best gets Brainlest

Len [333]

Answer:

A. g=11

Step-by-step explanation:

We want to find which choice makes the equation true. Let's plug in each answer choice.

A. g=11

26=7(11-9)+12

26= 7(2)+12 Solve inside the parentheses.

26= 14+12 Multiply 7 and 2.

26= 26 Add 14 and 12.

This answer must be correct, but let's check the other choices .

B. g=12

26=7(12-9)+12

26= 7(3)+12 Solve inside the parentheses.

26= 21+12 Multiply 7 and 3.

26≠33 Add 14 and 12.

This choice is not correct.

C. g= 13

26=7(13-9)+12

26= 7(4)+12 Solve inside the parentheses.

26= 28+12 Multiply 7 and 4.

26≠40 Add 28 and 12.

This is also not correct.

D. g= 14

26=7(14-9)+12

26= 7(5)+12 Solve inside the parentheses.

26= 35+12 Multiply 7 and 5.

26≠47 Add 35 and 12.

This choice is not correct either.

The value of g that make the expression 26=7(g-9)+12 a true statement is A. g=11.

5 0

2 years ago

I WILL MARK BRAINIEST<br> PLEASE HELP ASAP ITS DUE

Daniel [21]

Answer:

A) 1 : 4

B) 1 : 2

C) Base of M = 10 units

Step-by-step explanation:

The ratio of the area of triangle M to triangle N

$\frac {40}{160}= \frac{1}{4} = 1 : 4$

The ratio of the side lengths of triangle M to triangle N

$\sqrt{ \frac {40}{160}} = \sqrt{\frac{1}{4}} \\\\={\frac{1}{2}} \\\\=1 : 2$

C) Let the base of triangle M be b units.

$\sqrt{ \frac {40}{160}} = \frac{b}{20}\\\\\frac{1}{2}= \frac{b}{20}\\\\2b = 20\\\\b = \frac{20}{2} \\\\b = 10$

8 0

2 years ago

Bob was driving home at an average speed of 40mph for 2 hours. How fast should he drive for the next 1 hour to have an average s

Aleks04 [339]

Answer:

He will need to drive 70 mph for the next hour for his average to be 50pmh.

Hope this helped :)

3 0

3 years ago

Jenny Noah and Mary baked cookies for the class party. They baked 15, 18, and 17 cookies respectively. What percent of all cooli

MissTica

Answer:

30%

Step-by-step explanation:

15/(15+18+17) = 15/50 = 0.3 = 30%

6 0

2 years ago

A square has an area of 49x^2 - 56x + 16 square meters. which expression represents the length of each side, in meters?

Korvikt [17]

b. 7x - 4 is the correct answer

Step-by-step explanation:

Given

Area of square = A = $49x^2-56x+16$

Let s be the side of the square

Then

A = s^2

Putting the values we get

$49x^2-56x+16=s^2$

Taking Square root on both sides

$\sqrt{49x^2-56x+16}=\sqrt{s^2}\\s=\sqrt{49x^2-56x+16}\\s=\sqrt{(7x)^2-2(7x)(4)+(4)^2}\\Using\ formula\ a^2-2ab+b^2=(a-b)^2\\s=\sqrt{(7x-4)^2}\\s=7x-4$

b. 7x - 4 is the correct answer

Keywords: Area, Polynomials

Learn more about polynomials at:

#LearnwithBrainly

3 0

3 years ago