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Semmy [17]
3 years ago
13

What is the common denominator of 1/a+1/b in the complex fraction ((1/a-1/b)/(1/a+1/b)? A^2b^2 a-b a+b ab

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

  • D. ab

Step-by-step explanation:

  • 1/a + 1/b =
  • b / ab + a / ab =
  • (b + a) / ab

The common denominator is ab

Correct choice is D

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3 years ago
Which expression is equivalent to x2 − x − 6 x2 + 2x − 15 ? A) x + 3 x + 5 B) x + 2 x + 5 C) x + 3 x − 3 D) x + 2 x − 3
Tema [17]

Answer:

Well, I am not sure which one is equivalent to another, but I have some information that should help you find your answer.

Step-by-step explanation:

The simplified expression to x2 − x − 6 x2 + 2x − 15 would be equal to −5 x 2 + x − 15.

The simplified expression to x + 3 x + 5 would be equal to 4x + 5.

The simplified expression to x + 2x + 5 would be equal to 3x + 5.

The simplified expression x + 3 x − 3 would be equal to 4x − 3.

The last simplified expression to x + 2 x − 3 would be equal to   3x − 3.

Hope this helps, I am really sorry if I didn't answer your question properly, or the way you asked!

4 0
3 years ago
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3 0
2 years ago
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In the figure, what is the area of the shaded region?
Hatshy [7]
Use Pythagoras theorem
{(6 + 3)}^{2}  +  {x}^{2}  = {15}^{2}  \\  {x}^{2}  = 144 \\ x = 12
Two triangles are similar
\frac{6}{9}  =  \frac{y}{12}  \\ y = 8
(6+3)*12/2 - 6*8 /2 = 30
5 0
3 years ago
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nignag [31]

Answer:

b 2,3,8

Step-by-step explanation:

Y=234678

Z=278910

X=12358

234678910 n 12358

=238

8 0
2 years ago
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