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ValentinkaMS [17]
3 years ago
8

Please help on this math question

Mathematics
1 answer:
Llana [10]3 years ago
4 0

Answer:

\large\boxed{C.\ \dfrac{-2x^2-x+72}{8x^2}}

Step-by-step explanation:

\dfrac{9}{x^2}-\dfrac{2x+1}{8x}=\dfrac{9\cdot8}{x^2\cdot8}-\dfrac{(2x+1)\cdot x}{8x\cdot x}\qquad\text{use the distributive property}\\\\=\dfrac{72}{8x^2}-\dfrac{2x^2+x}{8x^2}=\dfrac{72-(2x^2+x)}{8x^2}=\dfrac{72-2x^2-x}{8x^2}\\\\=\dfrac{-2x^2-x+72}{8x^2}

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Which equation represents a circle that contains the point (–5, –3) and has a center at (–2, 1)?
melisa1 [442]

Answer:

(x + 2)² + (y - 1)² = 25

Step-by-step explanation:

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r = 5

Circle: (x - h)² + (y - k)² = r²

center: (-2 , 1)      h = -2       k = 1

(x + 2)² + (y - 1)² = 25

3 0
2 years ago
Read 2 more answers
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Serjik [45]
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8 0
3 years ago
A triangle has sides that measure 5 units, 7 units, and 8 units. Is this triangle a right triangle?
svp [43]

Answer:

B

Step-by-step explanation:

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6 0
3 years ago
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Pls help these are fractions btw.
vichka [17]
<h3><u>S</u><u>olution</u></h3>

1). 1/3 + 1/5 = (5 + 3)/15

= 8/15. Ans.

2).

==> 3/5 - 1/6

= (3×5 - 5)/30

= (15 - 5)/30

= 10/30

= 1/3 Ans.

3).

==> 2/3 ÷ 3/4

= 2/3 × 4/3

= 8/9 Ans.

4).

==> 3/8 + 5/12

= (3×3 + 10)/24

= (9+10)/24

= 19/24 Ans.

5).

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= (5×2 - 3)/32

= (10-3)/32

= 7/32 Ans.

6 0
3 years ago
Simplify<br> 7^8 x 7^3 x7^4 / 7^9 x 7^5
seropon [69]
1977326743




hope this helps
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3 years ago
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