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2 years ago

Whats the radius of a circle whose equation is x^2+y^2=16

Mathematics

2 answers:

kvv77 [185]2 years ago

8 0

Answer:

Step-by-step explanation:

We can write the equation of a circle as

(x-h)^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

x^2 + y^2 = 16

can be rewritten as

(x-0)^2 + (y-0)^2 = 4^2

Where the center is (0,0) and the radius is 4

Zina [86]2 years ago

4 0

Answe

Step-by-step explanation:

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Factorise each of the following<br> a2+9a+8

Tanzania [10]

Answer:

Step-by-step explanation:

I suppose the expression is this $a^2+9a+8.$

We can factor out this expression ( Remember, find two numbers that the sum is 9 and the product is 8. The numbers are 8 and 1)

$a^2+9a+8=(a+1)(a+8)$

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2 years ago

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Esther starts at one corner of a square field and walks 90 feet along one side to another corner of the field. She turns 90° and

erma4kov [3.2K]

The three sides make a right triangle and you know the base (90) and the height (70)

A = 1/2 bh or 1/2 x (70)x (90)= 3150 ft²

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3 years ago

X-3 divided by 4 = 12

yulyashka [42]

Answer:

x = 51

Step-by-step explanation:

(x-3) /4 = 12

Multiply each side by 4

(x-3) /4 *4 = 12*4

x-3 = 48

Add 3 to each side

x-3+3 = 48+3

x = 51

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3 years ago

Read 2 more answers

7p+5q+4p-2q what is the result of combining the like terms

Ahat [919]

Answer:

11p+7q

Step-by-step explanation:

3 0

2 years ago

The Cubs have won

Naily [24]

First you need to figure out the games the Cubs lost. 11-7=4, so they lost 4 games.

Now you must plug in the ratio of games lost to games played. You know they lost 4 games and played 11, so the ratio would be 4:11.

I hope you find this helpful :)

4 0

2 years ago