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Serhud [2]
3 years ago
11

What are the domain restrictions of a + 1 / a^2-5a-36?

Mathematics
1 answer:
velikii [3]3 years ago
3 0
All real numbers except -4 and 9.    

The domain of an expression is the range of all values for which the expression is defined. Looking at the expression, it will legal everywhere except when a^2 - 5a - 36 is equal to 0. Since that's a quadratic equation, we can use the quadratic formula to find where its value is 0, giving -4 and 9.    

Therefore the domain of the expression is, All real numbers except -4 and 9.
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7. In the accompanying diagram of rhombus CDEF, diagonal FD is drawn and the
tatiyna

Answer:

m∠CFD is 70°

Step-by-step explanation:

In the rhombus

  • Diagonals bisect the vertex angles
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Let us solve the question

∵ CDEF is a rhombus

∵ ∠E and ∠F are adjacent angles

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∴ m∠E + m∠F = 180°

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∴ 40° + m∠F = 180°

→ Subtract 40 from both sides

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∴ m∠CFD = \frac{1}{2} (140°)

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6 0
3 years ago
What else would need to be congruent to show that AABC= ADEF by AAS?
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Answer:

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

m + 9 = 45 ( subtract 9 from both sides )

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8 0
2 years ago
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