All categories

3 years ago

Which equation represents a circle with a center at ( -4,9) and a diameter of 10 units

Mathematics

2 answers:

Rufina [12.5K]3 years ago

7 0

Answer: it’s d (x+4)2+(y-9)=100

Step-by-step explanation:

Took it on edgunity btw

castortr0y [4]3 years ago

3 0

Answer:

(x + 4)² + (y - 9)² = 25

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 4, 9) and r = 10 ÷ 2 = 5, thus

(x - (- 4))² + (y - 9)² = 5², that is

(x + 4)² + (y - 9)² = 25

You might be interested in

All you need is in the photo

gogolik [260]

Answer:

It is the second one (It's decreasing by five feet per hour.)

Step-by-step explanation:

Thanks for the points!

Stay safe and healthy!

Happy holiday seasons!

5 0

2 years ago

Read 2 more answers

Drag the simplified value into the box to match each expression.

Maru [420]

Answer:

The answers are as follows: 12 106 42

Step-by-step explanation:

Given: $18 - 4^2 + 5 \times 2$

Using BODMAS rule (Bracket, Of, Division, Multiplication, Addition and Subtraction) we would calculate $18 - 4^2$ separately and $5 \times 2$ separately and add them. So we have $18 - 16 + 10 = 2 + 10 =12$ .

Now for the second question: $9^2 + 4 \times 7 - 3$ . we would get $81 + 28 - 3 = 106$

Next, $5^2 - 4 + 7 \times 3$ . This could be written as: $25 - 4 + 21 = 42$ . Hence the answers.

3 0

3 years ago

The combined area of the 3 windowpanes and frame shown below is 924 in.2. The frame is of uniform width. What is the side length

wariber [46]

Answer:

Option A. $x=10\ in$

Step-by-step explanation:

we know that

The combined area of the 3 windowpanes and frame is equal to

$(3x+12)(x+12)=924\\ \\3x^{2}+36x+ 12x+144=924\\ \\ 3x^{2}+48x-780=0$

using a graphing tool to solve the quadratic equation

The solution is $x=10\ in$

see the attached figure

5 0

3 years ago

Twelve large bottles of water cost $9.How many bottles can you buy for $3?

Andrej [43]

Answer: 4 large bottles of water for $3.

Step-by-step explanation: To find how many large water bottles you can buy with $3, you’ll have to divide 12 by 3 which equals to 4. You can check your answer by multiplying 4 x 3 which equals to 12, which is the original amount of large water bottles you can buy for $9.

5 0

2 years ago

If y varies directly with x, and y= 10 when x = 4, find y when x = 10.

mixer [17]

Answer:

Step-by-step explanation:

6 0

3 years ago