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max2010maxim [7]
3 years ago
8

What are the center and radius of a circle defined by the equation x^2+y^2- 6x+ 8y+ 21=0?

Mathematics
2 answers:
KengaRu [80]3 years ago
8 0

Answer:

It is B, Thank me later

Step-by-step explanation:


Natali5045456 [20]3 years ago
4 0
You have to complete the square. When you do this you get an equation that looks like this: (x-3)^2 + (y+4)^2 = 4. So your center is (3, -4) and your radius is 2. That looks like B to me!!!
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What is x if [-1 -2 4 8] + X =[-5 -1 2 1]
Scilla [17]

Answer:

X = [-5 -1 2 1] - [-1 -2 4 8] = [-4 1 -2 -7]

8 0
3 years ago
Given two triangles with three corresponding angles that are congruent, why can't the two triangles be proved congruent? A) Give
Xelga [282]
The answer is the triangles  could have the same shape( that is all the angles are equal) but the sides  may not be the same length . Thay are similar but not necessarily congruent.

C is the correct choice.
6 0
3 years ago
Read 2 more answers
A bicycle wheel makes 5 revolutions. Determine how far the bicycle travels in feet. The diameter of the wheel is 32in.
Mashutka [201]
It's 13 feet I believe 
4 0
3 years ago
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I don’t understand what to do on these question, some help would be nice (trigonometry)
Bumek [7]

Step-by-step explanation:

> find the angle of center circle:

cos~¹ 5/(5+12) = cos~¹ 5/17 = 72°

so the sector area of the shaded

region =

(360-72)/360 × 3.14 × 5²

= 288/360 × 78.5

= 62.8

> the height of triangle (red Line) =

4×tan 72° = 4× 3.078 = 12.31

the height of pyramid (green

Line) = √12.31²-8.5² =√74.16

= 8.61

so the volume of pyramid =

⅓×(17×8)×8.61 = 390.32

8 0
3 years ago
What is the cash payment of a article costing RS.2020 allowing a discount of Rs.20 and levying 13% VAT?​
belka [17]

The cash payment for the article is RS. 2,260.

A discount reduces the price of an item. The article becomes cheaper after the discount.

Cost of the article after the RS. 20 discount = RS. 2020 - 20 = RS 2000

VAT means value added tax. VAT increases the price of an item. The cost of the article increases by 13% after the  VAT is levied,

Cost of the article = (100 + 13%) x 2000

1.13 x 2000 = RS 2,260.

To learn more about taxes, please check: brainly.com/question/25311567

7 0
2 years ago
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