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luda_lava [24]
3 years ago
6

Can someone help me with this? No links please

Mathematics
2 answers:
Sphinxa [80]3 years ago
6 0

Answer:

3) (4x-9)(4x+9)

Step-by-step explanation:

Westkost [7]3 years ago
5 0

Answer:

(3) (4x - 9)(4x + 9)

Step-by-step explanation:

4x times 4x will give you 16x^2, and 9 times 9 is 81, but you need to have one of the nines negative to give you the -81.

You needed the square root of 16 and the square root of x^2, then the square root of 81.

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Work out the unknown angles. Give reasons for each answer.
zalisa [80]
A)

Because the sum of angles in a triangle must equal 180° we can say:

62+α+90=180

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α=28°

b)

Since all sides have equal length, all angles must have equal measure.  (This is an equilateral triangle).  And again, because the sum of the angle must be 180° we can say:

b+b+b=180

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b=60°
8 0
3 years ago
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masya89 [10]

Answer:

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Step-by-step explanation:

observe

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3 years ago
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Answer:

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Step-by-step explanation:

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7 0
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Read 2 more answers
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