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umka21 [38]
2 years ago
7

Determine the diameter of the circle with the equation x 2+ y 2= 9.

Mathematics
1 answer:
kotegsom [21]2 years ago
6 0

Answer: d = 6

Step-by-step explanation:

x^2 + y^2 = r^2

So r = 3 and d will be 2 x r = 6

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0.72 or the first option. Hope this helps.
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3 years ago
Point D is in the interior of ∠ABC. What is m∠DBC?
Rudiy27

37.5 degrees

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2 years ago
Find the direct variation equation
joja [24]

Answers:

  • The direct variation equation is y = 5x
  • If x = 4, then y = 20

=================================================

Explanation:

Let's say that the letter k replaces the green box

We have the equation y = kx

Plug in (x,y) = (7,35) to get the equation 35 = k*7

Dividing both sides by 7 leads to k = 5

Therefore, the direct variation equation is y = 5x

We can check this by plugging in x = 7

y = 5x

y = 5*7

y = 35

So x = 7 leads to y = 35 as expected.

-------------

Do the same for x = 4

y = 5x

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y = 20 when x = 4

Side note: direct variation equations always go through the origin.

6 0
2 years ago
Read 2 more answers
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Vsevolod [243]

Answer:

32.8

Step-by-step explanation:

Since the angles given are 90 degrees and 57.2 you can add those together then subtract them from 180 to find the answer 32.8.

180 - 90 + 57.2 = 32.8

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Answer:

1.09

Step-by-step explanation:

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