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3 years ago

Write the equation in standard form for the cricle with center (-2,4) and radius 9

Mathematics

1 answer:

Shtirlitz [24]3 years ago

6 0

Answer:

( x +2)² + ( y - 4)² = 81

Step-by-step explanation:

The equation for a circle in standard form is ( x – h)² + ( y - k)² = r², where the center is (h, k) and the radius is r.

Putting the question's given information into the formula gives you

[ x – (-2)]² + ( y - 4)² = (9)²

( x + 2)² + ( y - 4)² = 81

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Item 3

Soloha48 [4]

Answer: 203

Step-by-step explanation:

to find the area, you have to multiply the length of the sides together. 29x7 = 203

5 0

3 years ago

The table represents a liner function. What is the slope of the function?

Liono4ka [1.6K]

Answer:

The slope is 3.

Step-by-step explanation:

Let's use the slope formula to calculate the slope of this function. Remember, slope equals rise over run, or the difference between y coordinates divided by the difference between x coordinates of 2 points on the graph.

Let's use the last 2 points in the table: (1, 7) and (2, 10)

$\frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

= $\frac{10 - 7}{2 - 1}$

= $\frac{3}{1}$

The slope of this function is 3!

Hope this helps :) Feel free to ask me any questions!

5 0

3 years ago

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The perimeter of an equilateral triangle is 117mm. <br> State the length of one of its sides.

alina1380 [7]

Equilateral triangles have equal sides
117/3 = 39 mm. All the sides equal to
39 mm

Solution: 39mm

5 0

3 years ago

F(x)=2x an$ g(x)=2x+3,what is the value of f(g(-8))

Fudgin [204]

First plug in g(x) into f(x)

F((g(x))=2(2x+3)

And now you plug in -8

F(g(-8))=2(-16+3)

F(g(-8))=2(-13)

F(g(-8))=-26

6 0

3 years ago

What are the steps to find (2+2i)(5+3i)?

WITCHER [35]

(2+2i)(5+3i)
10+6i+10i+6i^2
10+16i+6(-1)
4+16i
When you have an “i^2”, you also have a negative one. The simplified answer is 4+16i

6 0

3 years ago

Read 2 more answers