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3 years ago

What is the common difference for this arithmetic sequence? -6, -2, 2, 6, 10, ...

Mathematics

1 answer:

FrozenT [24]3 years ago

5 0

Answer:

common difference: t2-t1

-2-6

-8

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11/ 42 Marks

amm1812

Answer:

(a)x=128 degrees

(b) $\angle APD\neq 116^\circ$

Step-by-step explanation:

$\angle ABD+\angle CBD =180^\circ$ (Linear Postulate)\\\angle ABD+116^\circ =180^\circ\\\angle ABD=180^\circ-116^\circ\\\angle ABD=64^\circ$

(a) Now:

$\angle AOD=2 \times \angle ABD$ (Angle at the centre is twice the angle at the circumference)\\x=2 \times 64^\circ\\x=128^\circ$

(b)

$\angle APD=2 \times \angle ABD$ (Inscribed Angle Theorem)\\\angle APD=2 \times 64^\circ\\ \angle APD=128^\circ$

$\angle APD\neq 116^\circ$

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3 years ago

(x^2 + 5x + 2) – (5x^2 – x – 2) =

zlopas [31]

Answer:

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Step-by-step explanation:

if you need the explanation you can comment

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