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Alenkinab [10]
2 years ago
9

Which is the standard equation for a circle centered at the origin with radius r?

Mathematics
2 answers:
xeze [42]2 years ago
3 0

Answer:The equation of a circle of radius r and centre the origin is x2 + y2 = r2

Step-by-step explanation:

Ostrovityanka [42]2 years ago
3 0

Answer:option D is correct

Step-by-step explanation:

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I need help with this plz
emmasim [6.3K]

Answer:

x^{15}

Step-by-step explanation:

Distribute the ^3 on top

(27 x^{6} y^{-9})

distribute the ^ -9 on bottom, only to what is in the parenthesis

(27 x^{-9} y^{-9})

the 27's cross out, the y^{-9} 's cross out

x^{6}/ x^{-9} is left

move the  x^{-9} to the top of fraction to change its sign

x^{6} · x^{9} = x^{15}

3 0
3 years ago
WILL GIVE BRAILIEST 70 POINTS First, reflect ABC across the y-axis, then dilate by a factor of ½.
Rina8888 [55]

Answer:

This is the graph one

Step-by-step explanation:

A(-1,-4) -->A' (1,-4)

B(-3,-2) ---> B'(3,-2)

C(-1,2) ---> C(1,2)

5 0
2 years ago
Danny made a mistake in the following problem.
mixas84 [53]
Line 3
since he added which is against the order of opreation rule he was supposed to multiply first then add
again what he was supposed to do is
Line 2:21+5+6(2)
Line 3:21+5+12
7 0
3 years ago
Express the function graphed on the axes below as a piecewise function.
dangina [55]

Answer:

y = 2/3x +6  for x< -3

y = 2/3x +1     for x> 3

Step-by-step explanation:

The graph is a line for  x < -3

( - 6,2) and ( -3,4)

The slope is m= ( y2-y1)/(x2-x1)

m = ( 4-2)/(-3 - -6) = 2/ ( -3+6) = 2/3

The slope is 2/3

Using point slope form

y-y1 = m(x-x1)  and the point ( -6,2)

y -2 = 2/3(x - -6)

y -2 = 2/3(x +6)

y-2 = 2/3 x +4

y = 2/3x +6 x< -3

The graph is a line for  x > 3

(3,3) and ( 6,5)

The slope is m= ( y2-y1)/(x2-x1)

m = ( 5-3)/(6-3) = 2/ (3) = 2/3

The slope is 2/3

Using point slope form

y-y1 = m(x-x1)  and the point (6,5)

y -5 = 2/3(x - 6)

y-5 = 2/3 x -4

y = 2/3x +1   x> 3

8 0
3 years ago
Last month you spent $20 on art supplies. This month you spent 180% of what you spent last month. How much did you spend this mo
Stolb23 [73]
$20 × 1.8 (180% in decimal form) = 36

$36 is how much you spent the 2nd

Brainliest please!
7 0
3 years ago
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